How bitcoin transactions work Get Started Bitcoin.com

Grams Helix Bitcoin Mixer

Grams Helix Bitcoin Mixer http://gramshelix.com/ Simply the best Bitcoin Mixer out there. Tumble bitcoins in seconds and receive newly mined bitcoins in return.
[link]

Grams Helix Light

Grams Helix Light Bitcoin Mixer, Simply the best Bitcoin Mixer out there. Tumble bitcoins in seconds and receive newly mined bitcoins in return. Helix Light is the premium Bitcoin Mixer that's easy to use and requires no sign up or verification.
[link]

04-06 13:25 - 'What you are experiencing is not how Bitcoin was supposed to work. High fees and slow confirmation times are the reason why Bitcoin forks (BSV and BCH) exist. I'd suggest you switch to Bitcoin Cash or even Litecoi...' by /u/layman_hodling_bros removed from /r/Bitcoin within 124-134min

'''
What you are experiencing is not how Bitcoin was supposed to work. High fees and slow confirmation times are the reason why Bitcoin forks (BSV and BCH) exist. I'd suggest you switch to Bitcoin Cash or even Litecoin for smooth cryptocurrency experience...
'''
Context Link
Go1dfish undelete link
unreddit undelete link
Author: layman_hodling_bros
submitted by removalbot to removalbot [link] [comments]

"confirmed @HotepJesus & #CraigWright will be discussing #bitcoin, capitalism, socialism ... & why some bitches get sued *next week* #MetaNetTV #StreamanityFirst to give $HotepJesus a taste of how a microtransaction system works. Show him some BSV love if you haven't already :)"

submitted by cryptorebel to bitcoincashSV [link] [comments]

Time.com reckon the positivity about Bitcoin is 'confirmation bias'...funny how that only works one way!

http://time.com/money/3479199/why-bitcoin-fans-dont-believe-in-bad-news/
They wheel out "Meir Statman, a professor at Santa Clara University specializing in behavioral finance" who asserts that those who believe Bitcoin will succeed are guilty of 'confirmation bias'.
Statman states concerning Bitcoin: “I think it’s a scam.”
Funny how it's only the supporters of Bitcoin who are guilty of not thinking clearly, whereas the opponents like Statman are of course fully rational in their deductions and unaffected by any bias.
submitted by iasudhf to Bitcoin [link] [comments]

Confused with how confirmations work and have a question /r/Bitcoin

Confused with how confirmations work and have a question /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

How does buying items from a store/restaurant in person work with Bitcoin and confirmations?

I'm mainly talking about confirmations here. I've played around with some wallets (Coinbase, bread, electrum) and when I send bitcoin I usually get an instant response from the receiving wallet that there is a transaction posted, but still must wait 10min for confirmations to start rolling through.
Say I go to a brick and mortar place and buy a pizza/beecouch whatever...am I supposed to just stand there waiting for 10min for the transaction to go through? If not this seems like a risk for the business in that the customer could try a double spend.
submitted by dietstache to Bitcoin [link] [comments]

How does buying items from a store/restaurant in person work with Bitcoin and confirmations? /r/Bitcoin

How does buying items from a store/restaurant in person work with Bitcoin and confirmations? /Bitcoin submitted by coincrazyy to BitcoinAll [link] [comments]

No wonder those that support core and Legacy Bitcoin have no idea how Bitcoin works and are ignorant of the history. The results of an analysis: "This confirms the general trend from the previous graphs: most users on /r/bitcoin’s are casuals."

Awareness,
adoption
submitted by zcc0nonA to btc [link] [comments]

MY BTC transaction from Blockchain wallet is still unconfirmed after 3 days -tried ViaBtc accelerator not working working - how long before it will get expired or how long it can take to confirm(max) any way to speedup the transaction for free /r/Bitcoin

MY BTC transaction from Blockchain wallet is still unconfirmed after 3 days -tried ViaBtc accelerator not working working - how long before it will get expired or how long it can take to confirm(max) any way to speedup the transaction for free /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

No wonder those that support core and Legacy Bitcoin have no idea how Bitcoin works and are ignorant of the history. The results of an analysis: "This confirms the general trend from the previous graphs: most users on /r/bitcoins are casuals." /r/btc

No wonder those that support core and Legacy Bitcoin have no idea how Bitcoin works and are ignorant of the history. The results of an analysis: submitted by BitcoinAllBot to BitcoinAll [link] [comments]

[Winner’s Thread #58] Thank you from the bottom of my heart.

I am still in shock, wow. I feel like I’m writing an Oscar’s speech, I just want to thank everyone. So thank you all! I was in the car when I got the notification that I was picked and my heart stopped. This is so unreal. I’ve never felt very lucky but I feel like my life is turning around. I know we could all use this money right now and I feel unbelievably blessed to be in this position.
My name is Luci and I’m 21 years old! I was in college for about a year but left because I did not feel like I was where I was supposed to be. I’m working in an office now just trying to make it in this crazy world!
My favorite thing in the world is to go to the Great Smoky Mountains. It is my happy place. My boyfriend took me on my first vacation ever there and then every year for the past 3 years and I would love to surprise him with a trip there that I plan and pay for when it’s safe to travel. He saved me from my abusive household and has done so much for me that I want to return the favor.
With any money left, I would put some aside to give back to this beautiful community and also put it towards my remaining student loans so I can help my credit and hopefully buy a house one day. Thank you again to everyone! I don’t know that I’ll ever be able to wrap my head around this!
EDIT: This has been the craziest 24 hours of my life. I don’t even know how to put into words the gratitude in my heart. I’ve never experienced so much good and generosity in one place. I hope you all receive so much good karma. You are all so amazing and I am so thankful for every single one of you. Thank you, thank you, thank you!!!!! ❤️
Everything listed should result in direct lines of payment to lbaumbe. We ask all users to donate at least $1 USD. The Drawing Thread is also listed for users who want to see the results and confirm the validity of the winner, and Activity Proof is listed for those who would like to confirm that the owner of the account is as presented.
Drawing Thread: https://reddit.com/millionairemakers/comments/iw8pvc/draw_58/
Activity Proof: https://imgur.com/a/pehPZst
PayPal: https://www.paypal.me/lbaumb
Venmo: @Lbaumbe
Bitcoin: 1AFPDRcWfthyLG1mTMQmKgiUBtR7ysTUtv
Bitcoin Cash: qpjhzlalyyv6n6qkxnp2gk53shpvy8kptsajwrcp5h
Ethereum: 0xD493a31aaA7f2785CD2271b79A5b6B70d677aBAa
submitted by lbaumbe to millionairemakers [link] [comments]

How do I confirm that my full node is working through tor? /r/Bitcoin

How do I confirm that my full node is working through tor? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

[Winner’s Thread #57] Wow!! I never thought it would be me!!!

What a thrill this is!!!
I honestly was stunned (and a little overwhelmed!) when I realized I’d been picked this month.
I’m relatively ancient for a redditor, thoroughly middle aged - and a little bit of a technological luddite. Setting up accounts and sorting through all of the business end of this has been a learning experience. I don’t know how many hours I spent on that, but it was a lot!! Luckily, with a little bit of handholding from u/lilfruini I feel like I’m in pretty good shape (hope your physics went well!!). I have learned SO MUCH, and if nothing else, I’m grateful for that - I honestly had only the dimmest understanding of bitcoin and now I’ve got a bitcoin wallet! What?!?!
A bit about me… Middle aged like I said before. I’m a speech therapist, a plant lover (as has been noted already!), and I have a very rare neurodegenerative disease called Hereditary Spastic Paraplegia. It’s a progressive disease, and although nobody would wish for something like that, if you’re going to have a neurodegenerative disease, I pretty much have the very best one.
Honestly, I am pretty lucky. I’m in a profession that I love, a place that I love - all of my needs for shelter, food, safety, companionship are met… I know that I’m doing better already than so many, and I have so much to be grateful for in my life.
As to what I plan to do with donations… I had a lot of time yesterday to think about it!!!
First - I need some things for my students - I need a voice amplifier, and some new materials that I can use both in person and for distance learning. If I can find one cheap, I’d also really love to have a second monitor to make teletherapy easier to manage. I’ve already spent so much of my own money on teachers pay teachers and other sites, but there are many more materials and supplies that would help make this challenging school year a little better and easier.
Second - I have my eye on a couple plants - a rubber tree tineke and a manjula pothos… neither of them are very expensive or rare, I just haven’t felt like I had the leeway in my wallet to treat myself to those recently.
And last, but certainly not least. This week just happens to be Spastic Paraplegia Awareness Week! The Spastic Paraplegia Foundation (SPF) is the national organization dedicated to advancing research and finding cures for two groups of closely related, progressive neurological disorders (Hereditary Spastic Paraplegia and Primary Lateral Sclerosis). I have been participating in all of the studies available to me - (knowledge is power!) and although I don’t have a lot of money to donate towards research, I certainly don’t mind being a guinea pig in the hopes that someday a treatment or a cure might be found. There are clinical trials going on in Australia right now and they’re working on funding to bring trials to the US as well. If any of you are so inclined and want to learn more you can check out sp-foundation.org.
Thank you to all - and especially again to u/lilfruini who was an enormous help to me.
update
This has been a crazy 24-ish hours!!
I'm not gonna lie, seeing all the notifications about money coming into my accounts has been exciting, but what's been even more meaningful to me are all the kind words, congratulations, and well wishes from all over the world.
Pandemic, and protests, and fires, and everything else going on in the US this summer... It's worn me down... I've been feeling so very tired deep into my bones. All y'all have reminded me that it's not always this way - hope for humanity restored!! :)
My heart feels full and warm and I sincerely wish that everyone could experience this. It's amazing and even after the money is gone I will remember this feeling.
I'm not a millionaire! ;)
I haven't done the exact math, but I'm a thousandaire for sure. I hope all of you who have donated know that I genuinely appreciate it and I will be certain to put this money to good use. I've tried to keep up with thanking everyone - if I missed you it wasn't intentional (except for that one guy - he was a jerk!!)
Thank you, thank you, thank you for giving me this amazing gift.
Everything listed should result in direct lines of payment to elle-mnop. We ask all users to donate at least $1 USD. The Drawing is also listed for users who want to see the results and confirm the validity of the winner.
Drawing: https://reddit.com/millionairemakers/comments/iez1uz/draw_57/
PayPal: PayPal.Me/ElsjeC
Venmo: @elle-el-l
Bitcoin: 1M9TJvPpq5zdkbRtmq6L4G84FLUQQ8MMQ5
Ethereum: 0x27d1E8A8D433E45275FBB6B8f2b79A5aca7A8aC9
Litecoin: LSEyyaiFgcXZf3uvKpq6cxbnpExB9iGBPg
Dogecoin: D5seJW2GRPYg91R8oeBkEDnuiD9YZMXGTf
Nano: nano_1xyr5yxfokh6ww3bt7pdoazgxz7kfa93feomyyqk3juthd3majob3qrcurxc
submitted by elle-mnop to millionairemakers [link] [comments]

Can we just talk about how crazy the network hashrate is currently ?

We regularly go above 150Ehashs/s now....
I think too many people don't realise that proof of work applied to transaction confirmation/decentralized timestamping is a such powerful idea, even after the halving the hashrate still increases to reach levels never touched before thanks to technical progress in specialized hardware in which miners throw energy they won't use otherwise.
The bitcoin token is the best money to buy this hashrate through transaction fees so that you can write what you want in the Bitcoin ledger that is the most legit document the humanity ever created thanks to proof of work (just by reading the blockchain content, you know it is legit document). The price of Bitcoin and the transaction fee market reflect how much people need a legit and unforgeable ledger to settle their contracts.
Altcoiner's fud of death spiral because of halving was a complete lack of understanding. Nothing can replace what proof of work and Bitcoin are doing: incentivize the creation of specialized hardware to create the most legit ledger ever made of history.
submitted by Pantamis to Bitcoin [link] [comments]

Trolls Infestation

Recently, there has been a surge of trolls infestation into rbtc and so, I wanted to write a little bit about this issue, especially for the newcomers. We all know that a global peer to peer monetary system like Bitcoin Cash is a threat to the traditional banking and financial sector. Each day they could delay their demise, they would. If your bank is earning billions of dollars in fees everyday, wouldn’t you mind spending a million or two to cause problems to something that threatens your survival? It’s common sense.
So people like me don’t get angry when I see trolls in rbtc because I know what they want and I know why they are here. And they are confirmation that Bitcoin Cash is moving in the right direction. They are here to disrupt the community and disrupt the global peer to peer cash movement. Therefore, for each troll I encountered, I will onboard 10 new people into the Bitcoin Cash community. I will use the negative energy from trolls and turn them into positive productive fuel to talk to more people about Bitcoin Cash. And when I’m done onboarding 10 new people each time, I feel great and I feel thankful to the trolls for driving me forward.
I have experienced and seen first hand accounts of how Bitcoin Cash has help improved people lives. I have used Bitcoin Cash to pay people to do some work. These are people from third world countries where there is a lack of job opportunities in their own countries and they are struggling to survive each day. People use platforms like https://Read.cash/ to earn a dollar or two each day. That may not seems like much but for some of them, it is money to prevent their families from going hungry. These people cannot afford the high fees of BTC and other cryptocurrencies. Bitcoin Cash is fast, cheap, reliable peer to peer unstoppable money for the world.
I know exactly why I am here in the Bitcoin Cash community. I don’t care how tough this journey is but if something is worth doing, it’s worth even if the odds are not in our favour. I won’t give up and I know I am not alone.
submitted by MobTwo to btc [link] [comments]

Bitcoin Newcomers FAQ - Please read!

Welcome to the /Bitcoin Sticky FAQ

You've probably been hearing a lot about Bitcoin recently and are wondering what's the big deal? Most of your questions should be answered by the resources below but if you have additional questions feel free to ask them in the comments.
It all started with the release of the release of Satoshi Nakamoto's whitepaper however that will probably go over the head of most readers so we recommend the following videos for a good starting point for understanding how bitcoin works and a little about its long term potential:
Some other great resources include Lopp.net, the Princeton crypto series and James D'Angelo's Bitcoin 101 Blackboard series.
Some excellent writing on Bitcoin's value proposition and future can be found at the Satoshi Nakamoto Institute.
Some Bitcoin statistics can be found here and here. Developer resources can be found here. Peer-reviewed research papers can be found here.
Potential upcoming protocol improvements and scaling resources here and here.
The number of times Bitcoin was declared dead by the media can be found here (LOL!)

Key properties of Bitcoin

Where can I buy bitcoins?

Bitcoin.org and BuyBitcoinWorldwide.com are helpful sites for beginners. You can buy or sell any amount of bitcoin (even just a few dollars worth) and there are several easy methods to purchase bitcoin with cash, credit card or bank transfer. Some of the more popular resources are below, also check out the bitcoinity exchange resources for a larger list of options for purchases.
Here is a listing of local ATMs. If you would like your paycheck automatically converted to bitcoin use Bitwage.
Note: Bitcoins are valued at whatever market price people are willing to pay for them in balancing act of supply vs demand. Unlike traditional markets, bitcoin markets operate 24 hours per day, 365 days per year. Preev is a useful site that that shows how much various denominations of bitcoin are worth in different currencies. Alternatively you can just Google "1 bitcoin in (your local currency)".

Securing your bitcoins

With bitcoin you can "Be your own bank" and personally secure your bitcoins OR you can use third party companies aka "Bitcoin banks" which will hold the bitcoins for you.
Note: For increased security, use Two Factor Authentication (2FA) everywhere it is offered, including email!
2FA requires a second confirmation code to access your account making it much harder for thieves to gain access. Google Authenticator and Authy are the two most popular 2FA services, download links are below. Make sure you create backups of your 2FA codes.
Google Auth Authy OTP Auth
Android Android N/A
iOS iOS iOS

Watch out for scams

As mentioned above, Bitcoin is decentralized, which by definition means there is no official website or Twitter handle or spokesperson or CEO. However, all money attracts thieves. This combination unfortunately results in scammers running official sounding names or pretending to be an authority on YouTube or social media. Many scammers throughout the years have claimed to be the inventor of Bitcoin. Websites like bitcoin(dot)com and the btc subreddit are active scams. Almost all altcoins (shitcoins) are marketed heavily with big promises but are really just designed to separate you from your bitcoin. So be careful: any resource, including all linked in this document, may in the future turn evil. Don't trust, verify. Also as they say in our community "Not your keys, not your coins".

Where can I spend bitcoins?

Check out spendabit or bitcoin directory for millions of merchant options. Also you can spend bitcoin anywhere visa is accepted with bitcoin debit cards such as the CashApp card. Some other useful site are listed below.
Store Product
Gyft Gift cards for hundreds of retailers including Amazon, Target, Walmart, Starbucks, Whole Foods, CVS, Lowes, Home Depot, iTunes, Best Buy, Sears, Kohls, eBay, GameStop, etc.
Spendabit, Overstock and The Bitcoin Directory Retail shopping with millions of results
ShakePay Generate one time use Visa cards in seconds
NewEgg and Dell For all your electronics needs
Bitwa.la, Coinbills, Piixpay, Bitbill.eu, Bylls, Coins.ph, Bitrefill, LivingRoomofSatoshi, Coinsfer, and more Bill payment
Menufy, Takeaway and Thuisbezorgd NL Takeout delivered to your door
Expedia, Cheapair, Destinia, Abitsky, SkyTours, the Travel category on Gyft and 9flats For when you need to get away
Cryptostorm, Mullvad, and PIA VPN services
Namecheap, Porkbun Domain name registration
Stampnik Discounted USPS Priority, Express, First-Class mail postage
Coinmap and AirBitz are helpful to find local businesses accepting bitcoins. A good resource for UK residents is at wheretospendbitcoins.co.uk.
There are also lots of charities which accept bitcoin donations.

Merchant Resources

There are several benefits to accepting bitcoin as a payment option if you are a merchant;
If you are interested in accepting bitcoin as a payment method, there are several options available;

Can I mine bitcoin?

Mining bitcoins can be a fun learning experience, but be aware that you will most likely operate at a loss. Newcomers are often advised to stay away from mining unless they are only interested in it as a hobby similar to folding at home. If you want to learn more about mining you can read more here. Still have mining questions? The crew at /BitcoinMining would be happy to help you out.
If you want to contribute to the bitcoin network by hosting the blockchain and propagating transactions you can run a full node using this setup guide. If you would prefer to keep it simple there are several good options. You can view the global node distribution here.

Earning bitcoins

Just like any other form of money, you can also earn bitcoins by being paid to do a job.
Site Description
WorkingForBitcoins, Bitwage, Cryptogrind, Coinality, Bitgigs, /Jobs4Bitcoins, BitforTip, Rein Project Freelancing
Lolli Earn bitcoin when you shop online!
OpenBazaar, Purse.io, Bitify, /Bitmarket, 21 Market Marketplaces
/GirlsGoneBitcoin NSFW Adult services
A-ads, Coinzilla.io Advertising
You can also earn bitcoins by participating as a market maker on JoinMarket by allowing users to perform CoinJoin transactions with your bitcoins for a small fee (requires you to already have some bitcoins.

Bitcoin-Related Projects

The following is a short list of ongoing projects that might be worth taking a look at if you are interested in current development in the bitcoin space.
Project Description
Lightning Network Second layer scaling
Blockstream, Rootstock and Drivechain Sidechains
Hivemind and Augur Prediction markets
Tierion and Factom Records & Titles on the blockchain
BitMarkets, DropZone, Beaver and Open Bazaar Decentralized markets
JoinMarket and Wasabi Wallet CoinJoin implementation
Coinffeine and Bisq Decentralized bitcoin exchanges
Keybase Identity & Reputation management
Abra Global P2P money transmitter network
Bitcore Open source Bitcoin javascript library

Bitcoin Units

One Bitcoin is quite large (hundreds of £/$/€) so people often deal in smaller units. The most common subunits are listed below:
Unit Symbol Value Info
bitcoin BTC 1 bitcoin one bitcoin is equal to 100 million satoshis
millibitcoin mBTC 1,000 per bitcoin used as default unit in recent Electrum wallet releases
bit bit 1,000,000 per bitcoin colloquial "slang" term for microbitcoin (μBTC)
satoshi sat 100,000,000 per bitcoin smallest unit in bitcoin, named after the inventor
For example, assuming an arbitrary exchange rate of $10000 for one Bitcoin, a $10 meal would equal:
For more information check out the Bitcoin units wiki.
Still have questions? Feel free to ask in the comments below or stick around for our weekly Mentor Monday thread. If you decide to post a question in /Bitcoin, please use the search bar to see if it has been answered before, and remember to follow the community rules outlined on the sidebar to receive a better response. The mods are busy helping manage our community so please do not message them unless you notice problems with the functionality of the subreddit.
Note: This is a community created FAQ. If you notice anything missing from the FAQ or that requires clarification you can edit it here and it will be included in the next revision pending approval.
Welcome to the Bitcoin community and the new decentralized economy!
submitted by BitcoinFan7 to Bitcoin [link] [comments]

Ledger Live adds Coin control: Here's why that matters.

Ledger Live adds Coin control: Here's why that matters.
Ledger Live version 2.11.1 (download link) adds Coin control for power users.
The coin control feature gives advanced users more granular control over their wallets. It enables them to change how and which coins are selected when making transactions. This increases their ability to manage their privacy and the network fees they will have to pay to spend their account balance.
More control over your coins

How does it work?

The account balance for Bitcoin and its derivatives consists of all the unspent transaction outputs (UTXOs) in the account. You can think of UTXOs as the coins in a regular wallet. When you receive money, you collect coins in your wallet. Then, when you want to make a payment, you get to choose which coins you pick from your wallet. Do you pick the largest coins first? Or do you want to spend all the smaller value coins to lighten up your wallet? Similar considerations can be made when creating a Bitcoin or Bitcoin derivative (altcoin) transaction.
Before the Coin Control feature was released, all transactions involving Bitcoin (and altcoins) automatically selected their coins using the First-In-First-Out (FIFO) algorithm. This strategy includes the oldest coin in the account, and when the amount is not sufficient the second-oldest coin is added, and so forth.
As of Ledger Live version 2.11.1, users are able to make use of a dedicated Coin Control tool to choose the coin selection strategy and the coins that may be spent.

Using Coin control in Ledger Live

Coin control is available in Advanced options in the Send flow
  1. Click on Send, choose an account to debit, and enter a recipient address. Click on Continue.
  2. Enter an amount and click on Advanced options. You will then see: - The currently selected, default coin selection strategy: Oldest coins first (FIFO). - A toggle to enable Replace-By-Fee (RBF). - A toggle to include coins from unconfirmed, replaceable transactions.
  3. Click on Coin control. The coin control modal opens.
  4. Select a Coin selection strategy from the dropdown menu: - Oldest coins first (FIFO). This is the default strategy that spends the oldest coins first. - Minimize fees (optimize size). This strategy tries to minimize the byte size of the transaction by spending the lowest number of UTXOs. This results in a low network fee. - Minimize future fees (merge coins), This strategy includes the maximum number of inputs so that a potential future price rise does not make smaller UTXOs economically unspendable. If the price of a crypto asset increases too much, small UTXOs may become worth less than the cost of the network fees to spend them.
  5. Select which coins may not be included in the selection by unticking their checkbox. The SELECTED indicator shows which coins will be included in the transaction. By changing the selection strategy and/or coins to include, the user has precise control over which coins end up being spent. The Coins to spend and Change to return indicators show how much is spent from and returned to the account.
  6. Click on Done to return to the Send flow to verify and send the transaction.
The coin control window lets you select the strategy as well as pick the coins. Coins marked SELECTED will be included in the transaction.

Coin status

The following statuses can be displayed for a coin:
  • Coins received in a transaction with 0 confirmations without RBF enabled: PENDING
  • Coins received in a transaction with 0 confirmations with RBF enabled: REPLACEABLE
  • Coins received in a transaction with 1337 confirmations: 1337 CONFIRMATIONS
By enabling the toggle Include coins from unconfirmed, replaceable transactions, replaceable transactions can be selected in the Coin control screen.

The Privacy use case

One of the main use cases for Coin control is to protect one’s privacy. UTXOs are, unfortunately, not perfectly fungible due to their unique history on the blockchain. Therefore, users may want to spend coins from different sources without mixing them together, because this would indicate to an outside observer of the blockchain that these addresses belong to the same account. For instance, if one were to spend coins bought on a KYC exchange, which are associated with the user’s identity, together with coins bought anonymously using cash, the anonymous coins could be linked to the user’s identity.
Another example would be that you would like to prevent spending a high-value coin for smaller purchases because this would unnecessarily show the person you’re paying how much you have. This is similar to not showing the boulanger how much is on your bank account when buying a baguette.

Let us know what you think!

We are excited to release this new feature because we think it will fulfill real needs of an important part of our users. This version of Ledger Live marks an important milestone, but we will continue working on more features that our community wants.
So, we invite you to try out Coin control in Ledger Live and let us know what you think! All feedback is welcome on this thread, on ledgerwallet, and you can send suggestions or get help through our official contact form.
We'd like to close out by underlining our commitment to the Bitcoin community, and our willingness to build the best wallet ecosystem for newbies as well as for power users.
submitted by fabnormal to Bitcoin [link] [comments]

[OWL WATCH] Waiting for "IOTA TIME" 30;

Disclaimer: This is sort of my own arbitrary editing, so there could be some misunderstandings.
I root for the spread of good spirits and transparency of IF.
📷
Hans Moog [IF]어제 오후 2:45
So why don't we just copy Avalanche? Well that's pretty simple ...
📷
Hans Moog [IF]어제 오후 2:47
1. It doesn't scale very well with the amount of nodes in the network that have no say in the consensus process but are merely consensus consuming nodes (i.e. sensors, edge devices and so on). If you assume that the network will never have more than a few thousand nodes then thats fine but if you want to build a DLT that can cope with millions of devices then it wont work because of the message complexity.
2. If somebody starts spamming conflicts, then the whole network will stop to confirm any transactions and will grind to a halt until the conflict spamming stops. Avalanche thinks that this is not a huge problem because an attacker would have to spend fees for spamming conflicts which means that he couldn't do this forever and would at some point run out of funds.
IOTA tries to build a feeless protocol and a consensus that stops to function if somebody spams conflicts is really not an option for us.
3. If a medium sized validator goes offline due to whatever reason, then the whole network will again stop to confirm any transactions because whenever a query for a nodes opinion can not be answered they reset the counter for consecutive successful voting rounds which will prevent confirmations. Since nodes need to open some ports to be available for queries it is super easy to DDOS validators and again bring the network confirmations to 0.
📷
Hans Moog [IF]어제 오후 3:05
4. Avalanche still processes transactions in "chunks/blocks" by only applying them after they have gone through some consensus process (gathered enough successfull voting rounds), which means that the nodes will waste a significant amount of time where they "wait" for the next chunk to be finished before the transactions are applied to the ledger state. IOTA tries to streamline this process by decoupling consensus and the booking of transactions by using the "parallel reality based ledger state" which means that nodes in IOTA will never waste any time "waiting" for decisions to be made. This will give us much higher throughput numbers.
📷
Hans Moog [IF]어제 오후 3:11
5. Avalanche has some really severe game theoretic problems where nodes are incentivized to attach their transactions to the already decided parts of the DAG because then things like conflict spam won't affect these transactions as badly as the transactions issued by honest nodes. If however every node would follow this "better and selfish" tip selection mechanism then the network will stop to work at all.
Overall the "being able to stop consensus" might not be too bad since you can't really do anything really bad (i.e. double spend) which is why we might not see these kind of attacks in the immediate future but just wait until a few DeFi apps are running on their platform where smart contracts are actually relying on more or less real time execution of the contracts. Then there might be some actual financial gains to be made if the contract halts and we might see alot of these things appear (including selfish tip selection).
Avalanche is barely a top 100 project and nobody attacks these kind of low value networks unless there is something to be gained from such an attack. Saying that the fact that its live on mainnet and hasn't been attacked in 3 weeks is a proof for its security is completely wrong.
Especially considering that 95% of all stake are controlled by avalanche itself
If you control > 50% of the voting power then you essentially control the whole network and attacks can mostly be ignored
I guess there is a reason for avalanche only selling 10% of the token supply to the public because then some of the named problems are less likely to appear
📷
Navin Ramachandran [IF]어제 오후 3:21
I have to say that wtf's suggestion is pretty condescending to all our researchers. It seems heavy on the troll aspect to suggest that we should ditch all our work because iota is only good at industrial adoption. Does wtf actually expect a response to this? Or is this grand standing?
📷
Hans Moog [IF]어제 오후 3:22
The whole argument of "why don't you just use X instead of trying to build a better version" is also a completely idiotic argument. Why did ETH write their own protocol if Bitcoin was already around? Well because they saw problems in Bitcoins approach and tried to improve it.
📷
Hans Moog [IF]어제 오후 3:27
u/Navin Ramachandran [IF] Its like most of his arguments ... remember when he said we should implement colored coins in 2nd layer smart contracts instead of the base layer because they would be more expressive (i.e. turing complete) completely discarding that 2nd layer smart contracts only really work if you have a consensus on data and therefore state for which you need the "traceability" of funds to create these kind of mini blockchains in the tangle?
Colored coins "enable" smart contracts and it wouldnt work the other way round - unless you have a platform that works exactly like ETH where all the nodes validate a single shared execution platform of the smart contracts which is not really scalable and is exactly what we are trying to solve with our approach.
📷
Navin Ramachandran [IF]어제 오후 3:28
Always easier to criticise than build something yourself. But yet he keeps posting these inflammatory posts.
At this point is there any doubt if he is making these comments constructively?
📷
Hans Moog [IF]어제 오후 3:43
If he at least would try to understand IOTAs vision ... then maybe he wouldn't have to ask things like "Why don't you just copy a tech that only works with fees"
📷
Hans Moog [IF]어제 오후 4:35
u/Shaar
I thought this would only be used to 'override' finality, eg if there were network splits. But not in normal consensus
That is not correct. Every single transaction gets booked on arrival using the parallel reality based ledger state. If there are conflicts then we create a "branch" (container in the ledger state) that represents the perception that this particular double spend would be accepted by consensus. After consensus is reached, the container is simply marked as "accepted" and all transactions that are associated with this branch are immediately confirmed as well. This allows us to make the node use all of its computing ressources 24/7 without having to wait for any kind of decision to be made and allows us to scale the throughput to its physical limits. That's the whole idea of the "parallel reality based ledger state" instead of designing a data structure that models the ledger state "after consensus" like everybody else is doing it is tailored to model the ledger state "before consensus" and then you just flip a flag to persist your decision. The "resync mechanism" also uses the branches to measure the amount of approval a certain perception of the ledger state receives. So if my own opinion is not in line with what the rest of the network has accepted (i.e. because I was eclipsed or because there was a network split), then I can use the weight of these branches to detect this "being out of sync" and can do another larger query to re-evaluate my decision.(수정됨)
Also what happens in IOTA if DRNG notes would fall out, does the network continue if no new RNGs appear for a while? Or will new nodes be added sufficiently fast to the DRNG committee that no one notices?
Its a comittee and not just a single DRNG provider. If a few nodes fail then it will still produce random numbers. And even if the whole comittee fails there are fallback RNG's that would be used instead
📷
Hans Moog [IF]어제 오후 4:58
And multiverse doesn't use FPC but only the weight of these branches in the same way as blockchain uses the longest chain wins consensus to choose between conflicts. So nodes simply attach their transactions to the transactions that they have seen first and if there are conflicts then you simply monitor which version received more approval and adjust your opinion accordingly.
📷
Hans Moog [IF]어제 오후 5:07
We started integrating some of the non-controversial concepts (like the approval reset switch) into FPC and are currently refactoring goshimmer to support this
We are also planning to make the big mana holders publish their opinion in the tangle as a public statement, which allows us to measure the rate of approval in a similar way as multiverse would do it
So its starting to converge a bit but we are still using FPC as a metastability breaking mechanism
Once the changes are implemented it should be pretty easy to simulate and test both approaches in parallel
📷
Serguei Popov [IF]어제 오후 5:53
So the ask is that we ditch all our work and fork Avalanche because it has not been attacked in the month or so it has been up?
u/Navin Ramachandran [IF] yeah, that's hilarious. Avalanche consensus (at least their WP version) is clearly scientifically unsound.
📷
Hans Moog [IF]어제 오후 9:43
u/wtf maybe you should research avalanche before proposing such a stupid idea
and you will see that what I wrote is actually true
📷
Hans Moog [IF]어제 오후 9:44
paying fees is what "protects" them atm
and simply the fact that nobody uses the network for anything of value yet
we cant rely on fees making attack vectors "inattractive"
📷
Serguei Popov [IF]어제 오후 10:17
well (1.) very obviously the metastability problems are not a problem in practice,
putting "very obviously" before questionable statements very obviously shows that you are seeking a constructive dialogue 📷 (to make metastability work, the adversary needs to more-or-less know the current opinion vectors of most of the honest participants; I don't see why a sufficiently well-connected adversary cannot query enough honest nodes frequently enough to achieve that)
(2.) .... you'd need an unpredictable number every few tens/hundreds milliseconds, but your DRNG can only produce one every O(seconds).
the above assumption (about "every few tens/hundreds milliseconds") is wrong
We've had this discussion before, where you argued that the assumptions in the FPC-BI paper (incl. "all nodes must be known") are not to be taken 100% strictly, and that the results are to be seen more of an indication of overall performance.
Aham, I see. So, unfortunately, all that time that I invested into explaining that stuff during our last conversation was for nothing. Again, very briefly. The contents of the FPC-BI paper is not "an indication of overall performance". It rather shows (to someone who actually read and understood the paper) why the approach is sound and robust, as it makes one understand what is the mechanism that causes the consensus phenomenon occur.
Yet you don't allow for that same argument to be valid for the "metastability" problem in avalanche,
Incorrect. It's not "that same argument". FPC-BI is a decent academic paper that has precisely formulated results and proofs. The Ava WP (the probabilistic part of it), on the other hand, does not contain proofs of what they call results. More importantly, they don't even show a clear path to those proofs. That's why their system is scientifically unsound.
even when there's a live network that shows that it doesn't matter.
No, it doesn't show that it doesn't matter. It only shows that it works when not properly attacked. Their WP doesn't contain any insight on why those attacks would be difficult/impossible.
📷
Hans Moog [IF]어제 오후 10:56
That proposal was so stupid - Avalanche does several things completely different and we are putting quite a bit og effort into our solution to pretty much fix all of Avalanches shortcomings
If we just wanted to have a working product and dont care about security or performance then we could have just forked a blockchaib
I am pretty confident that once we are done - its going to be extremely close to the besttheoretical thresholds that DLTs will ever be able to achieve for an unsharded baselayer
​-------------------------------------------------------------------------------------------------------------
📷
Bas어제 오전 2:43
Yesterday I was asked how a reasonably big company no one has heard of could best move forward implementing Access for thousands of locations worldwide. (Sorry for the vagueness, it’s all confidential.) They read the article and want to implement it because it seems to fit a problem they’re currently trying to solve. Such moves will vastly increase the utility of protocols like IOTA, and is what the speculation is built on. I do not think you can overestimate what impact Access is going to have. It’s cutting out the middleman for simple things; no server or service needed. That’s huge.
So yes, I think this space will continue to grow u/Coinnave

--------------------------------------------------------------------------------------------------------------
📷
Angelo Capossele [IF]2020.10.02.
In short: we are planning a new v0.3.0 release that should happen very soon. This version will bring fundamental changes to the structure of the entire codebase (but without additional features) so that progressing with the development will be easier and more consistent. We have also obtained outstanding results with the dRNG committee managed by the GoShimmer X-Team, so that will also be integral part of v0.3.0. After that, we will merge the Value Tangle with the Message Tangle, so to have only one Tangle and make the TSA and the orphanage easier to manage. And we are also progressing really well with Mana, that will be the focus after the merge. More or less this is what is going to happen this month.
We will release further details with the upcoming Research Status Update 📷

submitted by btlkhs to Iota [link] [comments]

Realistically - What happens when the Nano Developer Fund runs out?

I'm a very big fan of this project and think Nano is truly the best decentralized coin for payments. Nano is everything Bitcoin should have been - free, instant P2P payments. Every time I use it I am amazed by how fast the transactions are and how they are fully confirmed after ~3 seconds.
This project already has "the tech", but the X-Factoelephant in the room is the dev fund. For whatever reason, the devs of this project seem to require a massive amount of Nano ($) in order to keep the project going. In addition, even with all the funds that are being cashed out monthly (~$40,000-$50,000/month), this project engages in very little marketing (and if the team does engage in marketing, it's not very effective, as many community members have noted). From an investment perspective, I think many people are concerned about the longevity of this project.
The main questions here are:
I love Nano and want to see it succeed. I just hope funding isn't the downfall of this project.
submitted by Tmfallon to nanocurrency [link] [comments]

Wholeheartedly willing to get downvoted, but this RMT obsession has to stop.

This sub hasn't got a clue, I swear.

Huge sweeping changes to the game mechanics are a terrible way to combat RMT.
It's basically an admission that your anti-cheat doesn't work. Most MMOs suffer in some way from an RMT problem; WoW, Runescape, even Destiny 2 has RMT issues if you just look. Thing is, the anticheat in those games actually works worth a damn, so the entire playerbase doesn't have to suffer from endless tinkering with in-game systems.
Before you hit me with 'it's a hardcore game, deal with it, it's supposed to be grindy', just stop. Just don't bother. I've heard it time and time again, and it's bullshit. You know it's bullshit just as well as I do. The changes BSG have been making recently to nerf all forms of progression only make the game 'more hardcore' for people who work full time and don't have the same amount of *time* as streamers who dedicate their entire life to this game. That's not 'hardcore'. The game's difficulty mechanically is 'hardcore' and always have been, and I love it. These changes, though, in my eyes, are just time-wasting for the sake thereof. Since when does the amount of time one has to invest in a game define how fucking hardcore it is? Would you describe WoW as more hardcore than Tarkov because of how long you have to play to progress? Or perhaps beating all three Witcher games back to back is 'hardcore' because it took a long time. Are ARMA or DCS inherently less hardcore than Tarkov because an operation can be completed in an afternoon? No, judging how hardcore a game is by the amount of time one has to invest in it is a joke. *No game* should give enormous *mechanical advantages* to those with more time on their hands. There's already an inherent skill advantage that comes from that amount of practice, designing the mechanics to also reward only those with that much time is a kick in the teeth to all the people who love this game but can't invest that level of time.
And yeah, you can go ahead and say 'ummm actualllly it's a beta, so they can do what they like, stop whining', and yep. Yes, they can. You're correct. However, comma, that doesn't mean I have to pretend to like it. Yes, I did buy EoD and no, I don't regret it because of all the fun I've had til now. But suggesting people who don't like the current direction the game is going in aren't allowed to voice their opinion because the game's in beta is fucking ludicrous. What do you think the purpose of a playable beta is? Nikita is more than welcome to ignore all the people who don't like these new changes, but what gives people on this sub the right to tell me that I'm not entitled to an opinion on the product I've chosen to financially support. It's such a toxic, capital-G Gamer attitute to suggest that 'Tarkov is OUR game because we're willing to dump several full days a week into grinding for our Bitcoin farms. You should just go and play something else, this clearly isn't a game for you. Go play Call of Duty.' I shouldn't even have to express how utterly reductive and childish that is. Grow up.
I'm getting HUGE red flags with the way this game is currently going, because it's all too similar to a game I used to love, The Culling. That game blew up on launch and a bunch of high profile streamers suggested changes to the game, and the devs went ahead and implemented all of them without so much as *thinking* about how they'd affect the average player. Look at where that game is now. Servers shut down, because the average player simply stopped having fun. I'm not saying BSG is even close to that bad, but this endless tinkering with mechanics for the nebulous, vague purpose of 'RMT' has to stop or I don't know if the 'little guys' are gonna stick around much longer.

EDIT: I AM AWARE THAT RMT != CHEATING. But cheating is what makes RMT viable. RMTers need to keep items in supply, and to do that, they cheat. It's much more profitable. Ergo, if you stamp out cheaters, the RMT problem becomes significantly diminished.
EDIT 2: u/ArxMessor makes a great point that Tarkov is an MMO and therfore should have some kind of grind. I agree. However, most MMOs use systems like weekly bounties etc to ensure even players with only maybe 10 hours a week to invest in the game can still keep up and compete. Tarkov currently rewards time investment *exponentially* which removes all possibility of catching up.

EDIT 3: Yep, my DMs right now are very much confirming the things I said above about a certain subset of this community. Thanks, Gamers.
EDIT 4: I get it, Destiny anti-cheat is ass. I made a mistake there, since I don't play Trials of Osiris. However, do you see Bungie making the win requirement for Trials 50 wins instead of 9 or whatever just to slow down the hackers? Of course not, because it hurts normal players more.

Edit 5: My first gold! Thanks kind stranger.
submitted by ArmedChalko to EscapefromTarkov [link] [comments]

Comparison between Avalanche, Cosmos and Polkadot

Comparison between Avalanche, Cosmos and Polkadot
Reposting after was mistakenly removed by mods (since resolved - Thanks)
A frequent question I see being asked is how Cosmos, Polkadot and Avalanche compare? Whilst there are similarities there are also a lot of differences. This article is not intended to be an extensive in-depth list, but rather an overview based on some of the criteria that I feel are most important.
For better formatting see https://medium.com/ava-hub/comparison-between-avalanche-cosmos-and-polkadot-a2a98f46c03b
https://preview.redd.it/e8s7dj3ivpq51.png?width=428&format=png&auto=webp&s=5d0463462702637118c7527ebf96e91f4a80b290

Overview

Cosmos

Cosmos is a heterogeneous network of many independent parallel blockchains, each powered by classical BFT consensus algorithms like Tendermint. Developers can easily build custom application specific blockchains, called Zones, through the Cosmos SDK framework. These Zones connect to Hubs, which are specifically designed to connect zones together.
The vision of Cosmos is to have thousands of Zones and Hubs that are Interoperable through the Inter-Blockchain Communication Protocol (IBC). Cosmos can also connect to other systems through peg zones, which are specifically designed zones that each are custom made to interact with another ecosystem such as Ethereum and Bitcoin. Cosmos does not use Sharding with each Zone and Hub being sovereign with their own validator set.
For a more in-depth look at Cosmos and provide more reference to points made in this article, please see my three part series — Part One, Part Two, Part Three
(There's a youtube video with a quick video overview of Cosmos on the medium article - https://medium.com/ava-hub/comparison-between-avalanche-cosmos-and-polkadot-a2a98f46c03b)

Polkadot

Polkadot is a heterogeneous blockchain protocol that connects multiple specialised blockchains into one unified network. It achieves scalability through a sharding infrastructure with multiple blockchains running in parallel, called parachains, that connect to a central chain called the Relay Chain. Developers can easily build custom application specific parachains through the Substrate development framework.
The relay chain validates the state transition of connected parachains, providing shared state across the entire ecosystem. If the Relay Chain must revert for any reason, then all of the parachains would also revert. This is to ensure that the validity of the entire system can persist, and no individual part is corruptible. The shared state makes it so that the trust assumptions when using parachains are only those of the Relay Chain validator set, and no other. Interoperability is enabled between parachains through Cross-Chain Message Passing (XCMP) protocol and is also possible to connect to other systems through bridges, which are specifically designed parachains or parathreads that each are custom made to interact with another ecosystem such as Ethereum and Bitcoin. The hope is to have 100 parachains connect to the relay chain.
For a more in-depth look at Polkadot and provide more reference to points made in this article, please see my three part series — Part One, Part Two, Part Three
(There's a youtube video with a quick video overview of Polkadot on the medium article - https://medium.com/ava-hub/comparison-between-avalanche-cosmos-and-polkadot-a2a98f46c03b)

Avalanche

Avalanche is a platform of platforms, ultimately consisting of thousands of subnets to form a heterogeneous interoperable network of many blockchains, that takes advantage of the revolutionary Avalanche Consensus protocols to provide a secure, globally distributed, interoperable and trustless framework offering unprecedented decentralisation whilst being able to comply with regulatory requirements.
Avalanche allows anyone to create their own tailor-made application specific blockchains, supporting multiple custom virtual machines such as EVM and WASM and written in popular languages like Go (with others coming in the future) rather than lightly used, poorly-understood languages like Solidity. This virtual machine can then be deployed on a custom blockchain network, called a subnet, which consist of a dynamic set of validators working together to achieve consensus on the state of a set of many blockchains where complex rulesets can be configured to meet regulatory compliance.
Avalanche was built with serving financial markets in mind. It has native support for easily creating and trading digital smart assets with complex custom rule sets that define how the asset is handled and traded to ensure regulatory compliance can be met. Interoperability is enabled between blockchains within a subnet as well as between subnets. Like Cosmos and Polkadot, Avalanche is also able to connect to other systems through bridges, through custom virtual machines made to interact with another ecosystem such as Ethereum and Bitcoin.
For a more in-depth look at Avalanche and provide more reference to points made in this article, please see here and here
(There's a youtube video with a quick video overview of Avalanche on the medium article - https://medium.com/ava-hub/comparison-between-avalanche-cosmos-and-polkadot-a2a98f46c03b)

Comparison between Cosmos, Polkadot and Avalanche

A frequent question I see being asked is how Cosmos, Polkadot and Avalanche compare? Whilst there are similarities there are also a lot of differences. This article is not intended to be an extensive in-depth list, but rather an overview based on some of the criteria that I feel are most important. For a more in-depth view I recommend reading the articles for each of the projects linked above and coming to your own conclusions. I want to stress that it’s not a case of one platform being the killer of all other platforms, far from it. There won’t be one platform to rule them all, and too often the tribalism has plagued this space. Blockchains are going to completely revolutionise most industries and have a profound effect on the world we know today. It’s still very early in this space with most adoption limited to speculation and trading mainly due to the limitations of Blockchain and current iteration of Ethereum, which all three of these platforms hope to address. For those who just want a quick summary see the image at the bottom of the article. With that said let’s have a look

Scalability

Cosmos

Each Zone and Hub in Cosmos is capable of up to around 1000 transactions per second with bandwidth being the bottleneck in consensus. Cosmos aims to have thousands of Zones and Hubs all connected through IBC. There is no limit on the number of Zones / Hubs that can be created

Polkadot

Parachains in Polkadot are also capable of up to around 1500 transactions per second. A portion of the parachain slots on the Relay Chain will be designated as part of the parathread pool, the performance of a parachain is split between many parathreads offering lower performance and compete amongst themselves in a per-block auction to have their transactions included in the next relay chain block. The number of parachains is limited by the number of validators on the relay chain, they hope to be able to achieve 100 parachains.

Avalanche

Avalanche is capable of around 4500 transactions per second per subnet, this is based on modest hardware requirements to ensure maximum decentralisation of just 2 CPU cores and 4 GB of Memory and with a validator size of over 2,000 nodes. Performance is CPU-bound and if higher performance is required then more specialised subnets can be created with higher minimum requirements to be able to achieve 10,000 tps+ in a subnet. Avalanche aims to have thousands of subnets (each with multiple virtual machines / blockchains) all interoperable with each other. There is no limit on the number of Subnets that can be created.

Results

All three platforms offer vastly superior performance to the likes of Bitcoin and Ethereum 1.0. Avalanche with its higher transactions per second, no limit on the number of subnets / blockchains that can be created and the consensus can scale to potentially millions of validators all participating in consensus scores ✅✅✅. Polkadot claims to offer more tps than cosmos, but is limited to the number of parachains (around 100) whereas with Cosmos there is no limit on the number of hubs / zones that can be created. Cosmos is limited to a fairly small validator size of around 200 before performance degrades whereas Polkadot hopes to be able to reach 1000 validators in the relay chain (albeit only a small number of validators are assigned to each parachain). Thus Cosmos and Polkadot scores ✅✅
https://preview.redd.it/2o0brllyvpq51.png?width=1000&format=png&auto=webp&s=8f62bb696ecaafcf6184da005d5fe0129d504518

Decentralisation

Cosmos

Tendermint consensus is limited to around 200 validators before performance starts to degrade. Whilst there is the Cosmos Hub it is one of many hubs in the network and there is no central hub or limit on the number of zones / hubs that can be created.

Polkadot

Polkadot has 1000 validators in the relay chain and these are split up into a small number that validate each parachain (minimum of 14). The relay chain is a central point of failure as all parachains connect to it and the number of parachains is limited depending on the number of validators (they hope to achieve 100 parachains). Due to the limited number of parachain slots available, significant sums of DOT will need to be purchased to win an auction to lease the slot for up to 24 months at a time. Thus likely to lead to only those with enough funds to secure a parachain slot. Parathreads are however an alternative for those that require less and more varied performance for those that can’t secure a parachain slot.

Avalanche

Avalanche consensus scan scale to tens of thousands of validators, even potentially millions of validators all participating in consensus through repeated sub-sampling. The more validators, the faster the network becomes as the load is split between them. There are modest hardware requirements so anyone can run a node and there is no limit on the number of subnets / virtual machines that can be created.

Results

Avalanche offers unparalleled decentralisation using its revolutionary consensus protocols that can scale to millions of validators all participating in consensus at the same time. There is no limit to the number of subnets and virtual machines that can be created, and they can be created by anyone for a small fee, it scores ✅✅✅. Cosmos is limited to 200 validators but no limit on the number of zones / hubs that can be created, which anyone can create and scores ✅✅. Polkadot hopes to accommodate 1000 validators in the relay chain (albeit these are split amongst each of the parachains). The number of parachains is limited and maybe cost prohibitive for many and the relay chain is a ultimately a single point of failure. Whilst definitely not saying it’s centralised and it is more decentralised than many others, just in comparison between the three, it scores ✅
https://preview.redd.it/ckfamee0wpq51.png?width=1000&format=png&auto=webp&s=c4355f145d821fabf7785e238dbc96a5f5ce2846

Latency

Cosmos

Tendermint consensus used in Cosmos reaches finality within 6 seconds. Cosmos consists of many Zones and Hubs that connect to each other. Communication between 2 zones could pass through many hubs along the way, thus also can contribute to latency times depending on the path taken as explained in part two of the articles on Cosmos. It doesn’t need to wait for an extended period of time with risk of rollbacks.

Polkadot

Polkadot provides a Hybrid consensus protocol consisting of Block producing protocol, BABE, and then a finality gadget called GRANDPA that works to agree on a chain, out of many possible forks, by following some simpler fork choice rule. Rather than voting on every block, instead it reaches agreements on chains. As soon as more than 2/3 of validators attest to a chain containing a certain block, all blocks leading up to that one are finalized at once.
If an invalid block is detected after it has been finalised then the relay chain would need to be reverted along with every parachain. This is particularly important when connecting to external blockchains as those don’t share the state of the relay chain and thus can’t be rolled back. The longer the time period, the more secure the network is, as there is more time for additional checks to be performed and reported but at the expense of finality. Finality is reached within 60 seconds between parachains but for external ecosystems like Ethereum their state obviously can’t be rolled back like a parachain and so finality will need to be much longer (60 minutes was suggested in the whitepaper) and discussed in more detail in part three

Avalanche

Avalanche consensus achieves finality within 3 seconds, with most happening sub 1 second, immutable and completely irreversible. Any subnet can connect directly to another without having to go through multiple hops and any VM can talk to another VM within the same subnet as well as external subnets. It doesn’t need to wait for an extended period of time with risk of rollbacks.

Results

With regards to performance far too much emphasis is just put on tps as a metric, the other equally important metric, if not more important with regards to finance is latency. Throughput measures the amount of data at any given time that it can handle whereas latency is the amount of time it takes to perform an action. It’s pointless saying you can process more transactions per second than VISA when it takes 60 seconds for a transaction to complete. Low latency also greatly increases general usability and customer satisfaction, nowadays everyone expects card payments, online payments to happen instantly. Avalanche achieves the best results scoring ✅✅✅, Cosmos with comes in second with 6 second finality ✅✅ and Polkadot with 60 second finality (which may be 60 minutes for external blockchains) scores ✅
https://preview.redd.it/kzup5x42wpq51.png?width=1000&format=png&auto=webp&s=320eb4c25dc4fc0f443a7a2f7ff09567871648cd

Shared Security

Cosmos

Every Zone and Hub in Cosmos has their own validator set and different trust assumptions. Cosmos are researching a shared security model where a Hub can validate the state of connected zones for a fee but not released yet. Once available this will make shared security optional rather than mandatory.

Polkadot

Shared Security is mandatory with Polkadot which uses a Shared State infrastructure between the Relay Chain and all of the connected parachains. If the Relay Chain must revert for any reason, then all of the parachains would also revert. Every parachain makes the same trust assumptions, and as such the relay chain validates state transition and enables seamless interoperability between them. In return for this benefit, they have to purchase DOT and win an auction for one of the available parachain slots.
However, parachains can’t just rely on the relay chain for their security, they will also need to implement censorship resistance measures and utilise proof of work / proof of stake for each parachain as well as discussed in part three, thus parachains can’t just rely on the security of the relay chain, they need to ensure sybil resistance mechanisms using POW and POS are implemented on the parachain as well.

Avalanche

A subnet in Avalanche consists of a dynamic set of validators working together to achieve consensus on the state of a set of many blockchains where complex rulesets can be configured to meet regulatory compliance. So unlike in Cosmos where each zone / hub has their own validators, A subnet can validate a single or many virtual machines / blockchains with a single validator set. Shared security is optional

Results

Shared security is mandatory in polkadot and a key design decision in its infrastructure. The relay chain validates the state transition of all connected parachains and thus scores ✅✅✅. Subnets in Avalanche can validate state of either a single or many virtual machines. Each subnet can have their own token and shares a validator set, where complex rulesets can be configured to meet regulatory compliance. It scores ✅ ✅. Every Zone and Hub in cosmos has their own validator set / token but research is underway to have the hub validate the state transition of connected zones, but as this is still early in the research phase scores ✅ for now.
https://preview.redd.it/pbgyk3o3wpq51.png?width=1000&format=png&auto=webp&s=61c18e12932a250f5633c40633810d0f64520575

Current Adoption

Cosmos

The Cosmos project started in 2016 with an ICO held in April 2017. There are currently around 50 projects building on the Cosmos SDK with a full list can be seen here and filtering for Cosmos SDK . Not all of the projects will necessarily connect using native cosmos sdk and IBC and some have forked parts of the Cosmos SDK and utilise the tendermint consensus such as Binance Chain but have said they will connect in the future.

Polkadot

The Polkadot project started in 2016 with an ICO held in October 2017. There are currently around 70 projects building on Substrate and a full list can be seen here and filtering for Substrate Based. Like with Cosmos not all projects built using substrate will necessarily connect to Polkadot and parachains or parathreads aren’t currently implemented in either the Live or Test network (Kusama) as of the time of this writing.

Avalanche

Avalanche in comparison started much later with Ava Labs being founded in 2018. Avalanche held it’s ICO in July 2020. Due to lot shorter time it has been in development, the number of projects confirmed are smaller with around 14 projects currently building on Avalanche. Due to the customisability of the platform though, many virtual machines can be used within a subnet making the process incredibly easy to port projects over. As an example, it will launch with the Ethereum Virtual Machine which enables byte for byte compatibility and all the tooling like Metamask, Truffle etc. will work, so projects can easily move over to benefit from the performance, decentralisation and low gas fees offered. In the future Cosmos and Substrate virtual machines could be implemented on Avalanche.

Results

Whilst it’s still early for all 3 projects (and the entire blockchain space as a whole), there is currently more projects confirmed to be building on Cosmos and Polkadot, mostly due to their longer time in development. Whilst Cosmos has fewer projects, zones are implemented compared to Polkadot which doesn’t currently have parachains. IBC to connect zones and hubs together is due to launch Q2 2021, thus both score ✅✅✅. Avalanche has been in development for a lot shorter time period, but is launching with an impressive feature set right from the start with ability to create subnets, VMs, assets, NFTs, permissioned and permissionless blockchains, cross chain atomic swaps within a subnet, smart contracts, bridge to Ethereum etc. Applications can easily port over from other platforms and use all the existing tooling such as Metamask / Truffle etc but benefit from the performance, decentralisation and low gas fees offered. Currently though just based on the number of projects in comparison it scores ✅.
https://preview.redd.it/4zpi6s85wpq51.png?width=1000&format=png&auto=webp&s=e91ade1a86a5d50f4976f3b23a46e9287b08e373

Enterprise Adoption

Cosmos

Cosmos enables permissioned and permissionless zones which can connect to each other with the ability to have full control over who validates the blockchain. For permissionless zones each zone / hub can have their own token and they are in control who validates.

Polkadot

With polkadot the state transition is performed by a small randomly selected assigned group of validators from the relay chain plus with the possibility that state is rolled back if an invalid transaction of any of the other parachains is found. This may pose a problem for enterprises that need complete control over who performs validation for regulatory reasons. In addition due to the limited number of parachain slots available Enterprises would have to acquire and lock up large amounts of a highly volatile asset (DOT) and have the possibility that they are outbid in future auctions and find they no longer can have their parachain validated and parathreads don’t provide the guaranteed performance requirements for the application to function.

Avalanche

Avalanche enables permissioned and permissionless subnets and complex rulesets can be configured to meet regulatory compliance. For example a subnet can be created where its mandatory that all validators are from a certain legal jurisdiction, or they hold a specific license and regulated by the SEC etc. Subnets are also able to scale to tens of thousands of validators, and even potentially millions of nodes, all participating in consensus so every enterprise can run their own node rather than only a small amount. Enterprises don’t have to hold large amounts of a highly volatile asset, but instead pay a fee in AVAX for the creation of the subnets and blockchains which is burnt.

Results

Avalanche provides the customisability to run private permissioned blockchains as well as permissionless where the enterprise is in control over who validates the blockchain, with the ability to use complex rulesets to meet regulatory compliance, thus scores ✅✅✅. Cosmos is also able to run permissioned and permissionless zones / hubs so enterprises have full control over who validates a blockchain and scores ✅✅. Polkadot requires locking up large amounts of a highly volatile asset with the possibility of being outbid by competitors and being unable to run the application if the guaranteed performance is required and having to migrate away. The relay chain validates the state transition and can roll back the parachain should an invalid block be detected on another parachain, thus scores ✅.
https://preview.redd.it/li5jy6u6wpq51.png?width=1000&format=png&auto=webp&s=e2a95f1f88e5efbcf9e23c789ae0f002c8eb73fc

Interoperability

Cosmos

Cosmos will connect Hubs and Zones together through its IBC protocol (due to release in Q1 2020). Connecting to blockchains outside of the Cosmos ecosystem would either require the connected blockchain to fork their code to implement IBC or more likely a custom “Peg Zone” will be created specific to work with a particular blockchain it’s trying to bridge to such as Ethereum etc. Each Zone and Hub has different trust levels and connectivity between 2 zones can have different trust depending on which path it takes (this is discussed more in this article). Finality time is low at 6 seconds, but depending on the number of hops, this can increase significantly.

Polkadot

Polkadot’s shared state means each parachain that connects shares the same trust assumptions, of the relay chain validators and that if one blockchain needs to be reverted, all of them will need to be reverted. Interoperability is enabled between parachains through Cross-Chain Message Passing (XCMP) protocol and is also possible to connect to other systems through bridges, which are specifically designed parachains or parathreads that each are custom made to interact with another ecosystem such as Ethereum and Bitcoin. Finality time between parachains is around 60 seconds, but longer will be needed (initial figures of 60 minutes in the whitepaper) for connecting to external blockchains. Thus limiting the appeal of connecting two external ecosystems together through Polkadot. Polkadot is also limited in the number of Parachain slots available, thus limiting the amount of blockchains that can be bridged. Parathreads could be used for lower performance bridges, but the speed of future blockchains is only going to increase.

Avalanche

A subnet can validate multiple virtual machines / blockchains and all blockchains within a subnet share the same trust assumptions / validator set, enabling cross chain interoperability. Interoperability is also possible between any other subnet, with the hope Avalanche will consist of thousands of subnets. Each subnet may have a different trust level, but as the primary network consists of all validators then this can be used as a source of trust if required. As Avalanche supports many virtual machines, bridges to other ecosystems are created by running the connected virtual machine. There will be an Ethereum bridge using the EVM shortly after mainnet. Finality time is much faster at sub 3 seconds (with most happening under 1 second) with no chance of rolling back so more appealing when connecting to external blockchains.

Results

All 3 systems are able to perform interoperability within their ecosystem and transfer assets as well as data, as well as use bridges to connect to external blockchains. Cosmos has different trust levels between its zones and hubs and can create issues depending on which path it takes and additional latency added. Polkadot provides the same trust assumptions for all connected parachains but has long finality and limited number of parachain slots available. Avalanche provides the same trust assumptions for all blockchains within a subnet, and different trust levels between subnets. However due to the primary network consisting of all validators it can be used for trust. Avalanche also has a much faster finality time with no limitation on the number of blockchains / subnets / bridges that can be created. Overall all three blockchains excel with interoperability within their ecosystem and each score ✅✅.
https://preview.redd.it/ai0bkbq8wpq51.png?width=1000&format=png&auto=webp&s=3e85ee6a3c4670f388ccea00b0c906c3fb51e415

Tokenomics

Cosmos

The ATOM token is the native token for the Cosmos Hub. It is commonly mistaken by people that think it’s the token used throughout the cosmos ecosystem, whereas it’s just used for one of many hubs in Cosmos, each with their own token. Currently ATOM has little utility as IBC isn’t released and has no connections to other zones / hubs. Once IBC is released zones may prefer to connect to a different hub instead and so ATOM is not used. ATOM isn’t a fixed capped supply token and supply will continuously increase with a yearly inflation of around 10% depending on the % staked. The current market cap for ATOM as of the time of this writing is $1 Billion with 203 million circulating supply. Rewards can be earnt through staking to offset the dilution caused by inflation. Delegators can also get slashed and lose a portion of their ATOM should the validator misbehave.

Polkadot

Polkadot’s native token is DOT and it’s used to secure the Relay Chain. Each parachain needs to acquire sufficient DOT to win an auction on an available parachain lease period of up to 24 months at a time. Parathreads have a fixed fee for registration that would realistically be much lower than the cost of acquiring a parachain slot and compete with other parathreads in a per-block auction to have their transactions included in the next relay chain block. DOT isn’t a fixed capped supply token and supply will continuously increase with a yearly inflation of around 10% depending on the % staked. The current market cap for DOT as of the time of this writing is $4.4 Billion with 852 million circulating supply. Delegators can also get slashed and lose their DOT (potentially 100% of their DOT for serious attacks) should the validator misbehave.

Avalanche

AVAX is the native token for the primary network in Avalanche. Every validator of any subnet also has to validate the primary network and stake a minimum of 2000 AVAX. There is no limit to the number of validators like other consensus methods then this can cater for tens of thousands even potentially millions of validators. As every validator validates the primary network, this can be a source of trust for interoperability between subnets as well as connecting to other ecosystems, thus increasing amount of transaction fees of AVAX. There is no slashing in Avalanche, so there is no risk to lose your AVAX when selecting a validator, instead rewards earnt for staking can be slashed should the validator misbehave. Because Avalanche doesn’t have direct slashing, it is technically possible for someone to both stake AND deliver tokens for something like a flash loan, under the invariant that all tokens that are staked are returned, thus being able to make profit with staked tokens outside of staking itself.
There will also be a separate subnet for Athereum which is a ‘spoon,’ or friendly fork, of Ethereum, which benefits from the Avalanche consensus protocol and applications in the Ethereum ecosystem. It’s native token ATH will be airdropped to ETH holders as well as potentially AVAX holders as well. This can be done for other blockchains as well.
Transaction fees on the primary network for all 3 of the blockchains as well as subscription fees for creating a subnet and blockchain are paid in AVAX and are burnt, creating deflationary pressure. AVAX is a fixed capped supply of 720 million tokens, creating scarcity rather than an unlimited supply which continuously increase of tokens at a compounded rate each year like others. Initially there will be 360 tokens minted at Mainnet with vesting periods between 1 and 10 years, with tokens gradually unlocking each quarter. The Circulating supply is 24.5 million AVAX with tokens gradually released each quater. The current market cap of AVAX is around $100 million.

Results

Avalanche’s AVAX with its fixed capped supply, deflationary pressure, very strong utility, potential to receive air drops and low market cap, means it scores ✅✅✅. Polkadot’s DOT also has very strong utility with the need for auctions to acquire parachain slots, but has no deflationary mechanisms, no fixed capped supply and already valued at $3.8 billion, therefore scores ✅✅. Cosmos’s ATOM token is only for the Cosmos Hub, of which there will be many hubs in the ecosystem and has very little utility currently. (this may improve once IBC is released and if Cosmos hub actually becomes the hub that people want to connect to and not something like Binance instead. There is no fixed capped supply and currently valued at $1.1 Billion, so scores ✅.
https://preview.redd.it/mels7myawpq51.png?width=1000&format=png&auto=webp&s=df9782e2c0a4c26b61e462746256bdf83b1fb906
All three are excellent projects and have similarities as well as many differences. Just to reiterate this article is not intended to be an extensive in-depth list, but rather an overview based on some of the criteria that I feel are most important. For a more in-depth view I recommend reading the articles for each of the projects linked above and coming to your own conclusions, you may have different criteria which is important to you, and score them differently. There won’t be one platform to rule them all however, with some uses cases better suited to one platform over another, and it’s not a zero-sum game. Blockchain is going to completely revolutionize industries and the Internet itself. The more projects researching and delivering breakthrough technology the better, each learning from each other and pushing each other to reach that goal earlier. The current market is a tiny speck of what’s in store in terms of value and adoption and it’s going to be exciting to watch it unfold.
https://preview.redd.it/dbb99egcwpq51.png?width=1388&format=png&auto=webp&s=aeb03127dc0dc74d0507328e899db1c7d7fc2879
For more information see the articles below (each with additional sources at the bottom of their articles)
Avalanche, a Revolutionary Consensus Engine and Platform. A Game Changer for Blockchain
Avalanche Consensus, The Biggest Breakthrough since Nakamoto
Cosmos — An Early In-Depth Analysis — Part One
Cosmos — An Early In-Depth Analysis — Part Two
Cosmos Hub ATOM Token and the commonly misunderstood staking tokens — Part Three
Polkadot — An Early In-Depth Analysis — Part One — Overview and Benefits
Polkadot — An Early In-Depth Analysis — Part Two — How Consensus Works
Polkadot — An Early In-Depth Analysis — Part Three — Limitations and Issues
submitted by xSeq22x to CryptoCurrency [link] [comments]

Technical: Taproot: Why Activate?

This is a follow-up on https://old.reddit.com/Bitcoin/comments/hqzp14/technical_the_path_to_taproot_activation/
Taproot! Everybody wants it!! But... you might ask yourself: sure, everybody else wants it, but why would I, sovereign Bitcoin HODLer, want it? Surely I can be better than everybody else because I swapped XXX fiat for Bitcoin unlike all those nocoiners?
And it is important for you to know the reasons why you, o sovereign Bitcoiner, would want Taproot activated. After all, your nodes (or the nodes your wallets use, which if you are SPV, you hopefully can pester to your wallet vendoimplementor about) need to be upgraded in order for Taproot activation to actually succeed instead of becoming a hot sticky mess.
First, let's consider some principles of Bitcoin.
I'm sure most of us here would agree that the above are very important principles of Bitcoin and that these are principles we would not be willing to remove. If anything, we would want those principles strengthened (especially the last one, financial privacy, which current Bitcoin is only sporadically strong with: you can get privacy, it just requires effort to do so).
So, how does Taproot affect those principles?

Taproot and Your /Coins

Most HODLers probably HODL their coins in singlesig addresses. Sadly, switching to Taproot would do very little for you (it gives a mild discount at spend time, at the cost of a mild increase in fee at receive time (paid by whoever sends to you, so if it's a self-send from a P2PKH or bech32 address, you pay for this); mostly a wash).
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash, so the Taproot output spends 12 bytes more; spending from a P2WPKH requires revealing a 32-byte public key later, which is not needed with Taproot, and Taproot signatures are about 9 bytes smaller than P2WPKH signatures, but the 32 bytes plus 9 bytes is divided by 4 because of the witness discount, so it saves about 11 bytes; mostly a wash, it increases blockweight by about 1 virtual byte, 4 weight for each Taproot-output-input, compared to P2WPKH-output-input).
However, as your HODLings grow in value, you might start wondering if multisignature k-of-n setups might be better for the security of your savings. And it is in multisignature that Taproot starts to give benefits!
Taproot switches to using Schnorr signing scheme. Schnorr makes key aggregation -- constructing a single public key from multiple public keys -- almost as trivial as adding numbers together. "Almost" because it involves some fairly advanced math instead of simple boring number adding, but hey when was the last time you added up your grocery list prices by hand huh?
With current P2SH and P2WSH multisignature schemes, if you have a 2-of-3 setup, then to spend, you need to provide two different signatures from two different public keys. With Taproot, you can create, using special moon math, a single public key that represents your 2-of-3 setup. Then you just put two of your devices together, have them communicate to each other (this can be done airgapped, in theory, by sending QR codes: the software to do this is not even being built yet, but that's because Taproot hasn't activated yet!), and they will make a single signature to authorize any spend from your 2-of-3 address. That's 73 witness bytes -- 18.25 virtual bytes -- of signatures you save!
And if you decide that your current setup with 1-of-1 P2PKH / P2WPKH addresses is just fine as-is: well, that's the whole point of a softfork: backwards-compatibility; you can receive from Taproot users just fine, and once your wallet is updated for Taproot-sending support, you can send to Taproot users just fine as well!
(P2WPKH and P2WSH -- SegWit v0 -- addresses start with bc1q; Taproot -- SegWit v1 --- addresses start with bc1p, in case you wanted to know the difference; in bech32 q is 0, p is 1)
Now how about HODLers who keep all, or some, of their coins on custodial services? Well, any custodial service worth its salt would be doing at least 2-of-3, or probably something even bigger, like 11-of-15. So your custodial service, if it switched to using Taproot internally, could save a lot more (imagine an 11-of-15 getting reduced from 11 signatures to just 1!), which --- we can only hope! --- should translate to lower fees and better customer service from your custodial service!
So I think we can say, very accurately, that the Bitcoin principle --- that YOU are in control of your money --- can only be helped by Taproot (if you are doing multisignature), and, because P2PKH and P2WPKH remain validly-usable addresses in a Taproot future, will not be harmed by Taproot. Its benefit to this principle might be small (it mostly only benefits multisignature users) but since it has no drawbacks with this (i.e. singlesig users can continue to use P2WPKH and P2PKH still) this is still a nice, tidy win!
(even singlesig users get a minor benefit, in that multisig users will now reduce their blockchain space footprint, so that fees can be kept low for everybody; so for example even if you have your single set of private keys engraved on titanium plates sealed in an airtight box stored in a safe buried in a desert protected by angry nomads riding giant sandworms because you're the frickin' Kwisatz Haderach, you still gain some benefit from Taproot)
And here's the important part: if P2PKH/P2WPKH is working perfectly fine with you and you decide to never use Taproot yourself, Taproot will not affect you detrimentally. First do no harm!

Taproot and Your Contracts

No one is an island, no one lives alone. Give and you shall receive. You know: by trading with other people, you can gain expertise in some obscure little necessity of the world (and greatly increase your productivity in that little field), and then trade the products of your expertise for necessities other people have created, all of you thereby gaining gains from trade.
So, contracts, which are basically enforceable agreements that facilitate trading with people who you do not personally know and therefore might not trust.
Let's start with a simple example. You want to buy some gewgaws from somebody. But you don't know them personally. The seller wants the money, you want their gewgaws, but because of the lack of trust (you don't know them!! what if they're scammers??) neither of you can benefit from gains from trade.
However, suppose both of you know of some entity that both of you trust. That entity can act as a trusted escrow. The entity provides you security: this enables the trade, allowing both of you to get gains from trade.
In Bitcoin-land, this can be implemented as a 2-of-3 multisignature. The three signatories in the multisgnature would be you, the gewgaw seller, and the escrow. You put the payment for the gewgaws into this 2-of-3 multisignature address.
Now, suppose it turns out neither of you are scammers (whaaaat!). You receive the gewgaws just fine and you're willing to pay up for them. Then you and the gewgaw seller just sign a transaction --- you and the gewgaw seller are 2, sufficient to trigger the 2-of-3 --- that spends from the 2-of-3 address to a singlesig the gewgaw seller wants (or whatever address the gewgaw seller wants).
But suppose some problem arises. The seller gave you gawgews instead of gewgaws. Or you decided to keep the gewgaws but not sign the transaction to release the funds to the seller. In either case, the escrow is notified, and if it can sign with you to refund the funds back to you (if the seller was a scammer) or it can sign with the seller to forward the funds to the seller (if you were a scammer).
Taproot helps with this: like mentioned above, it allows multisignature setups to produce only one signature, reducing blockchain space usage, and thus making contracts --- which require multiple people, by definition, you don't make contracts with yourself --- is made cheaper (which we hope enables more of these setups to happen for more gains from trade for everyone, also, moon and lambos).
(technology-wise, it's easier to make an n-of-n than a k-of-n, making a k-of-n would require a complex setup involving a long ritual with many communication rounds between the n participants, but an n-of-n can be done trivially with some moon math. You can, however, make what is effectively a 2-of-3 by using a three-branch SCRIPT: either 2-of-2 of you and seller, OR 2-of-2 of you and escrow, OR 2-of-2 of escrow and seller. Fortunately, Taproot adds a facility to embed a SCRIPT inside a public key, so you can have a 2-of-2 Taprooted address (between you and seller) with a SCRIPT branch that can instead be spent with 2-of-2 (you + escrow) OR 2-of-2 (seller + escrow), which implements the three-branched SCRIPT above. If neither of you are scammers (hopefully the common case) then you both sign using your keys and never have to contact the escrow, since you are just using the escrow public key without coordinating with them (because n-of-n is trivial but k-of-n requires setup with communication rounds), so in the "best case" where both of you are honest traders, you also get a privacy boost, in that the escrow never learns you have been trading on gewgaws, I mean ewww, gawgews are much better than gewgaws and therefore I now judge you for being a gewgaw enthusiast, you filthy gewgawer).

Taproot and Your Contracts, Part 2: Cryptographic Boogaloo

Now suppose you want to buy some data instead of things. For example, maybe you have some closed-source software in trial mode installed, and want to pay the developer for the full version. You want to pay for an activation code.
This can be done, today, by using an HTLC. The developer tells you the hash of the activation code. You pay to an HTLC, paying out to the developer if it reveals the preimage (the activation code), or refunding the money back to you after a pre-agreed timeout. If the developer claims the funds, it has to reveal the preimage, which is the activation code, and you can now activate your software. If the developer does not claim the funds by the timeout, you get refunded.
And you can do that, with HTLCs, today.
Of course, HTLCs do have problems:
Fortunately, with Schnorr (which is enabled by Taproot), we can now use the Scriptless Script constuction by Andrew Poelstra. This Scriptless Script allows a new construction, the PTLC or Pointlocked Timelocked Contract. Instead of hashes and preimages, just replace "hash" with "point" and "preimage" with "scalar".
Or as you might know them: "point" is really "public key" and "scalar" is really a "private key". What a PTLC does is that, given a particular public key, the pointlocked branch can be spent only if the spender reveals the private key of the given public key to you.
Another nice thing with PTLCs is that they are deniable. What appears onchain is just a single 2-of-2 signature between you and the developemanufacturer. It's like a magic trick. This signature has no special watermarks, it's a perfectly normal signature (the pledge). However, from this signature, plus some datta given to you by the developemanufacturer (known as the adaptor signature) you can derive the private key of a particular public key you both agree on (the turn). Anyone scraping the blockchain will just see signatures that look just like every other signature, and as long as nobody manages to hack you and get a copy of the adaptor signature or the private key, they cannot get the private key behind the public key (point) that the pointlocked branch needs (the prestige).
(Just to be clear, the public key you are getting the private key from, is distinct from the public key that the developemanufacturer will use for its funds. The activation key is different from the developer's onchain Bitcoin key, and it is the activation key whose private key you will be learning, not the developer's/manufacturer's onchain Bitcoin key).
So:
Taproot lets PTLCs exist onchain because they enable Schnorr, which is a requirement of PTLCs / Scriptless Script.
(technology-wise, take note that Scriptless Script works only for the "pointlocked" branch of the contract; you need normal Script, or a pre-signed nLockTimed transaction, for the "timelocked" branch. Since Taproot can embed a script, you can have the Taproot pubkey be a 2-of-2 to implement the Scriptless Script "pointlocked" branch, then have a hidden script that lets you recover the funds with an OP_CHECKLOCKTIMEVERIFY after the timeout if the seller does not claim the funds.)

Quantum Quibbles!

Now if you were really paying attention, you might have noticed this parenthetical:
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash...)
So wait, Taproot uses raw 32-byte public keys, and not public key hashes? Isn't that more quantum-vulnerable??
Well, in theory yes. In practice, they probably are not.
It's not that hashes can be broken by quantum computes --- they're still not. Instead, you have to look at how you spend from a P2WPKH/P2PKH pay-to-public-key-hash.
When you spend from a P2PKH / P2WPKH, you have to reveal the public key. Then Bitcoin hashes it and checks if this matches with the public-key-hash, and only then actually validates the signature for that public key.
So an unconfirmed transaction, floating in the mempools of nodes globally, will show, in plain sight for everyone to see, your public key.
(public keys should be public, that's why they're called public keys, LOL)
And if quantum computers are fast enough to be of concern, then they are probably fast enough that, in the several minutes to several hours from broadcast to confirmation, they have already cracked the public key that is openly broadcast with your transaction. The owner of the quantum computer can now replace your unconfirmed transaction with one that pays the funds to itself. Even if you did not opt-in RBF, miners are still incentivized to support RBF on RBF-disabled transactions.
So the extra hash is not as significant a protection against quantum computers as you might think. Instead, the extra hash-and-compare needed is just extra validation effort.
Further, if you have ever, in the past, spent from the address, then there exists already a transaction indelibly stored on the blockchain, openly displaying the public key from which quantum computers can derive the private key. So those are still vulnerable to quantum computers.
For the most part, the cryptographers behind Taproot (and Bitcoin Core) are of the opinion that quantum computers capable of cracking Bitcoin pubkeys are unlikely to appear within a decade or two.
So:
For now, the homomorphic and linear properties of elliptic curve cryptography provide a lot of benefits --- particularly the linearity property is what enables Scriptless Script and simple multisignature (i.e. multisignatures that are just 1 signature onchain). So it might be a good idea to take advantage of them now while we are still fairly safe against quantum computers. It seems likely that quantum-safe signature schemes are nonlinear (thus losing these advantages).

Summary

I Wanna Be The Taprooter!

So, do you want to help activate Taproot? Here's what you, mister sovereign Bitcoin HODLer, can do!

But I Hate Taproot!!

That's fine!

Discussions About Taproot Activation

submitted by almkglor to Bitcoin [link] [comments]

List of current UI/UX issues & possible QoL improvements (Megathread?)

As some of you know, I only make stupidly long posts and also like to humbly brag about being a software engineer with fairly decent experience in QA, automated testing and testing in general (6+ years a C# dev).
This is my personal list of things that either make no sense, are unpleasant, incoherent, or could be improved.
Please feel free to add to the list, I will come back and edit every day.
Numbers are also here to help you quote & provide your own criticism.
Note that is is done with the following optimization mindset, in order of importance :
As you can see I worked under the assumption that the average player wants to spend more time in raid rather than in inventory ; obviously this falls apart if that is not the case. To do that I try to improve time spent on searching / arranging things without creating unecessary automation or remove important/immersive aspects of the game, even in inventory. I also try to improve time spent clicking through various windows as currently a lot of them are done to be fast & easy to for the devs, not for the players. I want to emphasize that I'm okay with that. I know the importance of having sub-optimal navigation to help you find out what your better navigation is. I also know a complete rework is not always possible, that is why I made my list without changing too much of the menus as well as keeping the vibe/current feel of those menus.
Keywords like should & could are used as intended ; since this is not a professional report I'm emphasizing here, the meaning of the word is important. Should means it is adding an improvement over an existing issue, could means it's a possible improvement but requires further investigation. Would means investigation was done and is just one possible outcome usually relevant within the context.
Please note that most of us now are very used to the current UI/UX, which will generate two reactions:
- "It's fine as it is because I can do it quite fast."
- "I don't want it to change again, I'm used to it now."
I cannot emphasize how unefficient it is to let those emotions get the best of you. UI/UX is the study of common sense & ease of use in an interface. You should never have to get used to anything, it should be fluid and intuitive. If you think you're fast now, that means it's possible to be slow. This is extremely bad for a UI/UX standpoint. Everybody should be able to navigate/understand the menus just as fast the 1st time than the 100th time (ideally). Keep this in mind when you read everything down here, because some stuff you probably won't like at first glance, but you will get used to it very fast, and you will gain a lot of time in the future, as well as new players.

1. Autostacking of items

Money & Ammo. When a stackable item or stack of items enter an inventory, it should autostack itself to an available non-full stack, then fill other available stacks until there aren't any. At that point, the item should just go at the top of the inventory as it is doing now. Autostacking should *not* browse for sublayers of inventory.
Items drag & dropped on an inventory slot should not be auto-stacked either (drag & drop overrides autostacking).
It would autostack when control clicking, or using "Receive all" from another inventory, or when dropping into a sublayer without selecting a specific slot.
Autostacking should only stack FiR items together and non FiR items together.

Example 1

Drag & Dropping would not stack in the same inventory layer. Drag & dropping would override auto stacking.

Dragging over the money case would auto stack in the inventory of the case.

Using Ammo as example here. If you drag & drop directly on a slot (even in an inventory sublayer), you would override autostacking.

2. Highlighting of full stacks

Stacks at full capacity could be highlighted for easier inventory management.
Many aspects could be used to highlight (either the name of the item, or the value, or the background of the cell)

Apology for the poor photoshop skills

This could be a highlighting method

This could be a highlighting method

3. Consistent item order in hideout craft list

Currently when in the workbench (and I think others? now I doubt), the list of craftable items appears to be random. The order should always be the same for consistency. Does not provide meaningful gameplay experience to have to "look for the recipe" every time.

4. Collecting crafts

Hideout stations could display the finished craft on top for easy collection of craft, or there could be a "Get Items" or "Receive All" elsewhere to avoid unecessary scrolling. This is uncessary if ongoing crafts are moved on top of the list, or if the list is autoscrolled to the ongoing craft.
"Collect All" on station level is not the best idea. If you go in a station, it's probably better that you know what you're collecting. I suggest moving the relevant craft on top or auto scrolling and not adding "receive all" on station level, although it would be a good help.
This should be investigated.

Receive All or Get Items could be moved or added at the top or bottom of the window.

5. "Receive All" could exist at hideout level

The same way we "receive all" from a trader, it would be nice to "Receive all" from the hideout. Either in the form of a trader (in which we can receive all / pick manually from) or by instantly putting it in inventory. If there is enough space it just works. If there isn't, it displays an error like it already does.
This is not mutually exclusive with the previous suggestion.

6. Display crafts readyness/collection

6.1 Hideout
The current behaviour is partially coherent. You get notified when an item is sold, and you get notified when a craft is finished.
You have a display notification "Attachment" style when a trader has something for you, and you should get a display notification "attachment" style when the hideout has something for you.
Ideally, there should also be such notifications for currently unused station


Receive all on the right, Nutrition unit has finished crafting and Lavatory is currently NOT crafting

6.2 Traders
There should be a way of knowing if something is waiting in trader inventory on a global level (quest rewards, money, insurance, unsold market items returns), like the nofication. The "new item" notification could be always visible as long as items are in the trader inventories, compared to now where it disappears as soon as you either click it or visit the messenger. In this hypothesis, there could be a change of color in the notification to show that there are still item waiting including some that haven't been seen yet (to still fulfill the current role of the notification)

7. CTA's

Note : CTA = Call to Action, it's the button your user will press 99.3% of the time. Example, in the launcher, it's the "Start Game". Clearly visible, easily accessible, highlighted, much bigger, and at a very common CTA spot. That one is great.
Some others are not.
7.1. "Receive All" should not be displayed when there is nothing to receive.
7.2 "Get" in single transaction messages from Ragman could be removed. There is no reason to take single items from the window when you can receive it all at once.
7.3 A "group collect" Receive all action could be added when you click on the attachment notification, or as an extra action next to the notification (just like shown on the Hideout in figure 6.0) that would specifically collect all. it would loop through all conversations and collect all and dump at the top of stash, either until its finished or there is not enough room, in which case it displays an error. It could also work like the scav case and not pick up anything until you have room, and in that case you would go in the window manually and/or make room (like we do now).
7.3 The "Receive all" is at the bottom when most CTAs in the game is at the top (dealer tabs, market tabs, character sheet tabs, settings...). Save in the settings is at the bottom too. It is incoherent. It would make more sense to have all CTAs at the bottom and options/tabs/menus at the top.
7.4 The "DEAL" button in trader view is much smaller and less visible than the "Fill Item" checkbox. The CTA should be getting more attention than a setting. New players pretty much *never* see it first and look around the "Fill Item" with eyes & mouse.

DEAL should be at the bottom in the current \"Fill Item\" box. Fill Items should be removed entirely.
7.5 Quests could be automatically accepted (no need for CTA). I don't see a reason why someone would not accept a quest. The only reason we're Accepting them now is to let the user know he has a new quest. There are other means of notifying players of new stuff : usually notifications. If not, that button should at least be more visible/highlighted. Every new player ( 100%! ) I coach does not see it at first and never looks at the right spot the first time.
7.6 "Insure All" is the most commonly used button in the insurance screen and could be emphasized more.

Example 7.5

8. Remove "Fill Items"

The Fill Items to automatically fill the trader's requirements should be removed and set as the default behaviour. There is no need to fill items manually nor tell the game to do so.

9. Expire / Delete pending requests

Friend requests should be cancellable and could expire. Requests should not be stuck until another user acts on them. Right clicking the request could display a "Cancel" or "Delete" request button.
Ideally, the cell should include a CTA on the right, as the only action I would ever do in a cell in this context is cancel.
Opening a submenu with only 1 item means you should not be opening a submenu, but displaying a button where the user right clicked instead.

I can only re-send a friend request to someone that already denied me. This is incoherent.

10. Market Rows

From my somewhat small sample (about 60 players), nobody uses the expand button on the top right of a cell (see below). I think everybody uses the right click on item instead.

An expanded cell with context menu opened, and a collapsed cell
The extra information available on the right is the exact same as a right click, but is hidden behind a left click. This is incoherent.
The only difference is the profile picture that I only get from expanding, but currently we all have the same one. This would need to be investigated.

This could be an improvement, displaying the CTA's immediately (although BUY is definitely way too small). Notice profile picture on the left
10.1 The expandable cell feature should be removed altogether, as the other options are available on right click.
10.2 The whole row should provide the same context menu (right click).
10.3 The "Send friend request" could be included in the row's context menu, or could be removed entirely, as right now most requests are missclicks. Adding the Send Friend Request at the bottom of the context menu on the row would reduce the amount of missclicks.
10.4 Left clicking should not open the context menu. This is mostly the reason behind missclick friend requests, people double clicking slightly off the item icon sending a friend request by mistake. Now I have 4 just because I was trying to make a screenshot. F's in the chat. This would be resolved with 10.2 and 10.3.
10.5 Barter items have a "Barter" icon that is redundant, the first and second column are completely irrelevant to the player.

Example 10.5

11. Filtering search

11.1 "Filter by Item" should not filter the browse list. If you're writing a valid keyword in the search field it should display the correct suggestions. Filtering content is good, filtering suggestions is incoherent.
11.2 Filters could be cleared as soon as you type text in the search field. This would resolve 11.1

Example 11
11.3 "My Offers" could not be affected by filters, or could reset filters. It is more trouble to remove the filter manually every time rather than browsing through the offer list. Currently we never have more than ~10 offers at the same time for most players, which is okay to display without filter.
11.4 Filters should not overlap with other UI elements, they could be resized to fit or the expandable filter list could include more elements so the visible ones fit.

Example 11.4
11.5 The Remember Selected Filter / Reset Filter is unclear. Looks great, feels weird, and should be investigated to be more useful.

12. Context Menu in player lobby


The current lobby with context menu open

All players in this list are looking for a group, there is no need to write a status "Looking for group", it's redundant. The exception is friends, which 99.633...% of the time is the group i'm about to play with. Those are displayed on top.
The only action we do on the list on this screen is the "Invite to group" context menu action. It's a CTA and should not be hidden in a context menu, especially if the context menu only has one option. Since recently it has two, but we'll come to that in a minute.
12.1 The invite CTA should be on the player cell itself.
12.2 The report action should not be the default one from the context menu
12.3 Since there could be only one item in the context menu according to 12.1, the report action could be on the cell as well.

A low quality suggestion for 12.x

13. Trader Buy/Sell

Trader screen needs to be reworked. I won't provide a solution that doesn't completely change how everything looks/works as I stated at the start of the post. That being said this should be improved.


Example 13.1
13.1 Buying UI should be reworked.
When buying, the price of the item is already displayed on the item itself in the trader view.
The price is also displayed a second time in the tooltip of the item if you mouse-over.
The price is also displayed a third time in the barter area on the right of the image (middle of the screen in game). This is redundant. I understand the item on the right is the physical item "Roubles" in a stack that is paid, like a barter, but it does not need to be displayed a third time.
13.2 Quantity limit (red box in the image) could be shown in the tooltip ; most of the time people will hit "DEAL" until they get an error insted of actually reading the red box.
13.3 The red box looks like an error even when at 0/x, this is not intuitive. Limited items can be listed in different ways that are not so invasive. We could add "out of X" at the right side of the quantity box.
13.4 Barter item prices (if we assume 13.1) would need to also displayed differently. This needs to be investigated
13.5 Selling UI should be reworked

Example 13.5

Currently selling an item still displays the full available items to BUY, this is incoherent. Especially from the "Sell" tab. The whole left side of the screen is wasted, and cannot be used.
13.6 Items on the left are not greyed out (even though I can't buy them), but items on the right are greyed out (because I can't sell them). This is incoherent.
13.7 Trader sell space should be infinite
13.8 Buy/Sell could be done in a single tab if the whole screen is reworked. There are different levels to this. An easy one I could think :
"Trade" Tab instead of "Buy". Displays the same as the current "BUY" tab. If you ctrl+click an item from your stash, it instantly sells without confirmation. The second tab would be a "Buyback" where you can see what you sold in the current trade session. If you leave the screen your buyback is reset and items cannot be recovered. Another way would be to keep buybacks for the last X items. You would need to pay what you received to get back. The item would not lose it's FiR status. This preleminary and simplistic rework has issues, notably that you have to know to right click to sell. One way to fix that would be to make right click sell to trader instead of control click, but that would definitely make missclicks the first few days (and buyback would be mandatory).
This could be investigated.
13.9 Currency exchange rates should be easily available in relevant areas (Peacekeeper, Therapist and flea market) for all currencies (Rouble, Euro, Dollar, Bitcoin)

14. Boxing

Items should be boxables and moved around. At least to be dropped in boxes, ideally to be moved around freely.
There is a limit of 20 images. 🤷‍♂
Example 14

15. Quest inventory

If you loot too many quest items in a raid, you can end up not being able to loot it. I assume this is by design and it is why you have limited quest item space.
The quest inventory could be infinite if it's not by design to be limited.
The quest inventory should be manageable. In my case i had a 1 slot item blocking me from taking the suitcase, I should have been allowed to move that 1 slot item to the top or to the right of my inventory, clearing a whole line and letting me take the case.
Quest items could be stored in backpack (and resized) ; since you lose them on death it's not relevant to the players looting you or you dying and that issue would be gone. Storing it in your stash would also prevent you from losing it by going in raid with it by mistake. Taking it in raid or giving it to trader would be a volontary action. It also makes much more sense that way as other quest items (that are also usable items) work that way.


Alright this ended up taking more time than my lunchbreak, and there is *much* more to write but for the time being I'll leave it at that and come tomorrow to add your suggestions or mine. See you in 24 hours.
submitted by SixOneZil to EscapefromTarkov [link] [comments]

What Are Bitcoin Blocks and Bitcoin Confirmations ? - YouTube What Are Bitcoin Blocks and Bitcoin Confirmations ? How To Check My Number Of Bitcoin Confirmations Using Luno ... How to accelerate Blockchain unconfirmed transactions ... How to Verify A Bitcoin Transaction  Bitcoin Transaction ...

Bitcoin (BTC) was created to function as peer-to-peer electronic cash. Whether you are spending or accepting BTC as payment it is prudent to understand how a transaction works. Bitcoin transactions are messages, like email, which are digitally signed using cryptography and sent to the entire Bitcoin Network for verification. How to Check Bitcoin Confirmations Once you make a transaction, your wallet should give you an option to view the transaction on a block explorer or give you the transaction ID. blockstream.info is one of the most useful block explorers on the internet. The Bitcoin ledger is protected against fraud via a trustless system; Bitcoin exchanges also work to defend themselves against potential theft, but high-profile thefts have occurred. The Blockchain Bitcoin is a network that runs on a protocol known as the blockchain. The mined block will be broadcast to the network to receive confirmations, which take another hour or so, though occasionally much longer, to process. ... How Bitcoin's halving works and what it ... In bitcoin, integrity, block-chaining, and the hashcash cost-function all use SHA256 as the underlying cryptographic hash function. A cryptographic hash function essentially takes input data which can be of practically any size, and transforms it, in an effectively-impossible to reverse or to predict way, into a relatively compact string (in ...

[index] [21247] [19256] [2686] [20811] [32558] [2981] [33991] [31587] [22826] [35047]

What Are Bitcoin Blocks and Bitcoin Confirmations ? - YouTube

How To Check My Number Of Bitcoin Confirmations Using Luno Wallet Zukul Sign Up https://goo.gl/MHcD4t How To Earn $1,000 - $10,000 Monthly http://onlinestuff... In this video I demonstrate and show you how to check and verify your Bitcoin transaction. After watching it you will be in the position to track your bitcoi... A short simplified tutorial about Bitcoin blocks and confirmations for newbies. For the full article: http://99bitcoins.com/bitcoin-confirmations/ A short simplified tutorial about Bitcoin blocks and confirmations for newbies. For the complete text guide visit: http://bit.ly/2qDVVVW Join our 7-day Bitco... Every transaction must be added to a blockchain — an official public ledger of crypto transactions, in order to be considered successfully completed or valid...

#