How to import private keys - Bitcoin Wiki

Bitcoin (BTC)A Peer-to-Peer Electronic Cash System.

Bitcoin (BTC)A Peer-to-Peer Electronic Cash System.
  • Bitcoin (BTC) is a peer-to-peer cryptocurrency that aims to function as a means of exchange that is independent of any central authority. BTC can be transferred electronically in a secure, verifiable, and immutable way.
  • Launched in 2009, BTC is the first virtual currency to solve the double-spending issue by timestamping transactions before broadcasting them to all of the nodes in the Bitcoin network. The Bitcoin Protocol offered a solution to the Byzantine Generals’ Problem with a blockchain network structure, a notion first created by Stuart Haber and W. Scott Stornetta in 1991.
  • Bitcoin’s whitepaper was published pseudonymously in 2008 by an individual, or a group, with the pseudonym “Satoshi Nakamoto”, whose underlying identity has still not been verified.
  • The Bitcoin protocol uses an SHA-256d-based Proof-of-Work (PoW) algorithm to reach network consensus. Its network has a target block time of 10 minutes and a maximum supply of 21 million tokens, with a decaying token emission rate. To prevent fluctuation of the block time, the network’s block difficulty is re-adjusted through an algorithm based on the past 2016 block times.
  • With a block size limit capped at 1 megabyte, the Bitcoin Protocol has supported both the Lightning Network, a second-layer infrastructure for payment channels, and Segregated Witness, a soft-fork to increase the number of transactions on a block, as solutions to network scalability.

https://preview.redd.it/s2gmpmeze3151.png?width=256&format=png&auto=webp&s=9759910dd3c4a15b83f55b827d1899fb2fdd3de1

1. What is Bitcoin (BTC)?

  • Bitcoin is a peer-to-peer cryptocurrency that aims to function as a means of exchange and is independent of any central authority. Bitcoins are transferred electronically in a secure, verifiable, and immutable way.
  • Network validators, whom are often referred to as miners, participate in the SHA-256d-based Proof-of-Work consensus mechanism to determine the next global state of the blockchain.
  • The Bitcoin protocol has a target block time of 10 minutes, and a maximum supply of 21 million tokens. The only way new bitcoins can be produced is when a block producer generates a new valid block.
  • The protocol has a token emission rate that halves every 210,000 blocks, or approximately every 4 years.
  • Unlike public blockchain infrastructures supporting the development of decentralized applications (Ethereum), the Bitcoin protocol is primarily used only for payments, and has only very limited support for smart contract-like functionalities (Bitcoin “Script” is mostly used to create certain conditions before bitcoins are used to be spent).

2. Bitcoin’s core features

For a more beginner’s introduction to Bitcoin, please visit Binance Academy’s guide to Bitcoin.

Unspent Transaction Output (UTXO) model

A UTXO transaction works like cash payment between two parties: Alice gives money to Bob and receives change (i.e., unspent amount). In comparison, blockchains like Ethereum rely on the account model.
https://preview.redd.it/t1j6anf8f3151.png?width=1601&format=png&auto=webp&s=33bd141d8f2136a6f32739c8cdc7aae2e04cbc47

Nakamoto consensus

In the Bitcoin network, anyone can join the network and become a bookkeeping service provider i.e., a validator. All validators are allowed in the race to become the block producer for the next block, yet only the first to complete a computationally heavy task will win. This feature is called Proof of Work (PoW).
The probability of any single validator to finish the task first is equal to the percentage of the total network computation power, or hash power, the validator has. For instance, a validator with 5% of the total network computation power will have a 5% chance of completing the task first, and therefore becoming the next block producer.
Since anyone can join the race, competition is prone to increase. In the early days, Bitcoin mining was mostly done by personal computer CPUs.
As of today, Bitcoin validators, or miners, have opted for dedicated and more powerful devices such as machines based on Application-Specific Integrated Circuit (“ASIC”).
Proof of Work secures the network as block producers must have spent resources external to the network (i.e., money to pay electricity), and can provide proof to other participants that they did so.
With various miners competing for block rewards, it becomes difficult for one single malicious party to gain network majority (defined as more than 51% of the network’s hash power in the Nakamoto consensus mechanism). The ability to rearrange transactions via 51% attacks indicates another feature of the Nakamoto consensus: the finality of transactions is only probabilistic.
Once a block is produced, it is then propagated by the block producer to all other validators to check on the validity of all transactions in that block. The block producer will receive rewards in the network’s native currency (i.e., bitcoin) as all validators approve the block and update their ledgers.

The blockchain

Block production

The Bitcoin protocol utilizes the Merkle tree data structure in order to organize hashes of numerous individual transactions into each block. This concept is named after Ralph Merkle, who patented it in 1979.
With the use of a Merkle tree, though each block might contain thousands of transactions, it will have the ability to combine all of their hashes and condense them into one, allowing efficient and secure verification of this group of transactions. This single hash called is a Merkle root, which is stored in the Block Header of a block. The Block Header also stores other meta information of a block, such as a hash of the previous Block Header, which enables blocks to be associated in a chain-like structure (hence the name “blockchain”).
An illustration of block production in the Bitcoin Protocol is demonstrated below.

https://preview.redd.it/m6texxicf3151.png?width=1591&format=png&auto=webp&s=f4253304912ed8370948b9c524e08fef28f1c78d

Block time and mining difficulty

Block time is the period required to create the next block in a network. As mentioned above, the node who solves the computationally intensive task will be allowed to produce the next block. Therefore, block time is directly correlated to the amount of time it takes for a node to find a solution to the task. The Bitcoin protocol sets a target block time of 10 minutes, and attempts to achieve this by introducing a variable named mining difficulty.
Mining difficulty refers to how difficult it is for the node to solve the computationally intensive task. If the network sets a high difficulty for the task, while miners have low computational power, which is often referred to as “hashrate”, it would statistically take longer for the nodes to get an answer for the task. If the difficulty is low, but miners have rather strong computational power, statistically, some nodes will be able to solve the task quickly.
Therefore, the 10 minute target block time is achieved by constantly and automatically adjusting the mining difficulty according to how much computational power there is amongst the nodes. The average block time of the network is evaluated after a certain number of blocks, and if it is greater than the expected block time, the difficulty level will decrease; if it is less than the expected block time, the difficulty level will increase.

What are orphan blocks?

In a PoW blockchain network, if the block time is too low, it would increase the likelihood of nodes producingorphan blocks, for which they would receive no reward. Orphan blocks are produced by nodes who solved the task but did not broadcast their results to the whole network the quickest due to network latency.
It takes time for a message to travel through a network, and it is entirely possible for 2 nodes to complete the task and start to broadcast their results to the network at roughly the same time, while one’s messages are received by all other nodes earlier as the node has low latency.
Imagine there is a network latency of 1 minute and a target block time of 2 minutes. A node could solve the task in around 1 minute but his message would take 1 minute to reach the rest of the nodes that are still working on the solution. While his message travels through the network, all the work done by all other nodes during that 1 minute, even if these nodes also complete the task, would go to waste. In this case, 50% of the computational power contributed to the network is wasted.
The percentage of wasted computational power would proportionally decrease if the mining difficulty were higher, as it would statistically take longer for miners to complete the task. In other words, if the mining difficulty, and therefore targeted block time is low, miners with powerful and often centralized mining facilities would get a higher chance of becoming the block producer, while the participation of weaker miners would become in vain. This introduces possible centralization and weakens the overall security of the network.
However, given a limited amount of transactions that can be stored in a block, making the block time too longwould decrease the number of transactions the network can process per second, negatively affecting network scalability.

3. Bitcoin’s additional features

Segregated Witness (SegWit)

Segregated Witness, often abbreviated as SegWit, is a protocol upgrade proposal that went live in August 2017.
SegWit separates witness signatures from transaction-related data. Witness signatures in legacy Bitcoin blocks often take more than 50% of the block size. By removing witness signatures from the transaction block, this protocol upgrade effectively increases the number of transactions that can be stored in a single block, enabling the network to handle more transactions per second. As a result, SegWit increases the scalability of Nakamoto consensus-based blockchain networks like Bitcoin and Litecoin.
SegWit also makes transactions cheaper. Since transaction fees are derived from how much data is being processed by the block producer, the more transactions that can be stored in a 1MB block, the cheaper individual transactions become.
https://preview.redd.it/depya70mf3151.png?width=1601&format=png&auto=webp&s=a6499aa2131fbf347f8ffd812930b2f7d66be48e
The legacy Bitcoin block has a block size limit of 1 megabyte, and any change on the block size would require a network hard-fork. On August 1st 2017, the first hard-fork occurred, leading to the creation of Bitcoin Cash (“BCH”), which introduced an 8 megabyte block size limit.
Conversely, Segregated Witness was a soft-fork: it never changed the transaction block size limit of the network. Instead, it added an extended block with an upper limit of 3 megabytes, which contains solely witness signatures, to the 1 megabyte block that contains only transaction data. This new block type can be processed even by nodes that have not completed the SegWit protocol upgrade.
Furthermore, the separation of witness signatures from transaction data solves the malleability issue with the original Bitcoin protocol. Without Segregated Witness, these signatures could be altered before the block is validated by miners. Indeed, alterations can be done in such a way that if the system does a mathematical check, the signature would still be valid. However, since the values in the signature are changed, the two signatures would create vastly different hash values.
For instance, if a witness signature states “6,” it has a mathematical value of 6, and would create a hash value of 12345. However, if the witness signature were changed to “06”, it would maintain a mathematical value of 6 while creating a (faulty) hash value of 67890.
Since the mathematical values are the same, the altered signature remains a valid signature. This would create a bookkeeping issue, as transactions in Nakamoto consensus-based blockchain networks are documented with these hash values, or transaction IDs. Effectively, one can alter a transaction ID to a new one, and the new ID can still be valid.
This can create many issues, as illustrated in the below example:
  1. Alice sends Bob 1 BTC, and Bob sends Merchant Carol this 1 BTC for some goods.
  2. Bob sends Carols this 1 BTC, while the transaction from Alice to Bob is not yet validated. Carol sees this incoming transaction of 1 BTC to him, and immediately ships goods to B.
  3. At the moment, the transaction from Alice to Bob is still not confirmed by the network, and Bob can change the witness signature, therefore changing this transaction ID from 12345 to 67890.
  4. Now Carol will not receive his 1 BTC, as the network looks for transaction 12345 to ensure that Bob’s wallet balance is valid.
  5. As this particular transaction ID changed from 12345 to 67890, the transaction from Bob to Carol will fail, and Bob will get his goods while still holding his BTC.
With the Segregated Witness upgrade, such instances can not happen again. This is because the witness signatures are moved outside of the transaction block into an extended block, and altering the witness signature won’t affect the transaction ID.
Since the transaction malleability issue is fixed, Segregated Witness also enables the proper functioning of second-layer scalability solutions on the Bitcoin protocol, such as the Lightning Network.

Lightning Network

Lightning Network is a second-layer micropayment solution for scalability.
Specifically, Lightning Network aims to enable near-instant and low-cost payments between merchants and customers that wish to use bitcoins.
Lightning Network was conceptualized in a whitepaper by Joseph Poon and Thaddeus Dryja in 2015. Since then, it has been implemented by multiple companies. The most prominent of them include Blockstream, Lightning Labs, and ACINQ.
A list of curated resources relevant to Lightning Network can be found here.
In the Lightning Network, if a customer wishes to transact with a merchant, both of them need to open a payment channel, which operates off the Bitcoin blockchain (i.e., off-chain vs. on-chain). None of the transaction details from this payment channel are recorded on the blockchain, and only when the channel is closed will the end result of both party’s wallet balances be updated to the blockchain. The blockchain only serves as a settlement layer for Lightning transactions.
Since all transactions done via the payment channel are conducted independently of the Nakamoto consensus, both parties involved in transactions do not need to wait for network confirmation on transactions. Instead, transacting parties would pay transaction fees to Bitcoin miners only when they decide to close the channel.
https://preview.redd.it/cy56icarf3151.png?width=1601&format=png&auto=webp&s=b239a63c6a87ec6cc1b18ce2cbd0355f8831c3a8
One limitation to the Lightning Network is that it requires a person to be online to receive transactions attributing towards him. Another limitation in user experience could be that one needs to lock up some funds every time he wishes to open a payment channel, and is only able to use that fund within the channel.
However, this does not mean he needs to create new channels every time he wishes to transact with a different person on the Lightning Network. If Alice wants to send money to Carol, but they do not have a payment channel open, they can ask Bob, who has payment channels open to both Alice and Carol, to help make that transaction. Alice will be able to send funds to Bob, and Bob to Carol. Hence, the number of “payment hubs” (i.e., Bob in the previous example) correlates with both the convenience and the usability of the Lightning Network for real-world applications.

Schnorr Signature upgrade proposal

Elliptic Curve Digital Signature Algorithm (“ECDSA”) signatures are used to sign transactions on the Bitcoin blockchain.
https://preview.redd.it/hjeqe4l7g3151.png?width=1601&format=png&auto=webp&s=8014fb08fe62ac4d91645499bc0c7e1c04c5d7c4
However, many developers now advocate for replacing ECDSA with Schnorr Signature. Once Schnorr Signatures are implemented, multiple parties can collaborate in producing a signature that is valid for the sum of their public keys.
This would primarily be beneficial for network scalability. When multiple addresses were to conduct transactions to a single address, each transaction would require their own signature. With Schnorr Signature, all these signatures would be combined into one. As a result, the network would be able to store more transactions in a single block.
https://preview.redd.it/axg3wayag3151.png?width=1601&format=png&auto=webp&s=93d958fa6b0e623caa82ca71fe457b4daa88c71e
The reduced size in signatures implies a reduced cost on transaction fees. The group of senders can split the transaction fees for that one group signature, instead of paying for one personal signature individually.
Schnorr Signature also improves network privacy and token fungibility. A third-party observer will not be able to detect if a user is sending a multi-signature transaction, since the signature will be in the same format as a single-signature transaction.

4. Economics and supply distribution

The Bitcoin protocol utilizes the Nakamoto consensus, and nodes validate blocks via Proof-of-Work mining. The bitcoin token was not pre-mined, and has a maximum supply of 21 million. The initial reward for a block was 50 BTC per block. Block mining rewards halve every 210,000 blocks. Since the average time for block production on the blockchain is 10 minutes, it implies that the block reward halving events will approximately take place every 4 years.
As of May 12th 2020, the block mining rewards are 6.25 BTC per block. Transaction fees also represent a minor revenue stream for miners.
submitted by D-platform to u/D-platform [link] [comments]

Subreddit Stats: Bitcoin posts from 2018-10-09 to 2018-10-16 19:41 PDT

Period: 7.10 days
Submissions Comments
Total 765 10226
Rate (per day) 107.80 1494.28
Unique Redditors 596 3440
Combined Score 31658 33963

Top Submitters' Top Submissions

  1. 4526 points, 1 submission: Alexsayzz
    1. Anti-crypto propaganda... promoted by American Express (4526 points, 513 comments)
  2. 2391 points, 2 submissions: MoonMan_666
    1. Someone just paid $0.10 to move $194M (29,999 BTC). Think about how powerful that is for a second. (2369 points, 380 comments)
    2. Dev sends Bitcoin without using the web or the power grid (22 points, 4 comments)
  3. 2077 points, 1 submission: _Logicrypto
    1. When your boss thanks you for staying late at work but you were just watching the Bitcoin price and lost track of time (2077 points, 69 comments)
  4. 1496 points, 1 submission: bitbug42
    1. ⚡Lightning Network at the Senate - Counterargument to Roubini's speech that Bitcoin can never scale to serve the planet (1496 points, 186 comments)
  5. 1417 points, 1 submission: opencoins
    1. Why sell and pay capital gains, why not wait for mass adoption? That's my motto. (1417 points, 244 comments)
  6. 1174 points, 1 submission: awertheim
    1. Took a while but finally part of the picture club (had to wait on the web browser update!) (1174 points, 127 comments)
  7. 853 points, 1 submission: Hodl_it
    1. Feeling good? (853 points, 215 comments)
  8. 833 points, 1 submission: cointastical
    1. Bitcoin ATM operator gets the $62,500 that police confiscated back (833 points, 110 comments)
  9. 802 points, 2 submissions: JandyJammer
    1. Congratulations US senators for understanding crypto better than this guy (748 points, 125 comments)
    2. How is Bitmex the biggest exchange... total joke. I hope their competitors crush them. (54 points, 49 comments)
  10. 704 points, 1 submission: lesbiansareoverrated
    1. ...in case you missed the laura shill burn today (704 points, 100 comments)
  11. 512 points, 5 submissions: castorfromtheva
    1. Mycelium wallet will FINALLY get segwit! "This month" as stated by Mycelium developers on 9 October 2018. Glad to hear! I am excited. (312 points, 136 comments)
    2. Just saw it on their website: Ledger Nano S 20% off, directly from manufacturer! For six days, starting today. Just in case you consider getting a hardware wallet. (146 points, 84 comments)
    3. Newsflash: Bitfinex Unveils ‘Distributed Banking Solution,’ Resumes Fiat Deposits (44 points, 8 comments)
    4. Binance Uganda Launch 80% Ready As Users Can Now Sign Up: Deposits & Trading Coming Soon (8 points, 1 comment)
    5. Article: "Cryptos at a turning point", trustnodes.com (2 points, 0 comments)
  12. 510 points, 4 submissions: eddieweng
    1. Someone moved 12,220 BTC ($82M) in block 545,877 (393 points, 180 comments)
    2. Someone moved 22,200 BTC ($139M) in block 545,243 (90 points, 38 comments)
    3. CoinMarketBull – CoinMarketCap, but with a different metric (26 points, 4 comments)
    4. holdernews - trending stories on bitcointalk (1 point, 0 comments)
  13. 387 points, 1 submission: StoneHammers
    1. We are three months away from Bitcoins 10 year anniversary. (387 points, 39 comments)
  14. 366 points, 3 submissions: TrackCoinMarket-com
    1. Citizens of Venezuela have turned to Bitcoin and gold farming in online games to survive the country’s economic collapse. (365 points, 60 comments)
    2. Zambian Central Bank Declares Bitcoin Is Not Legal Tender (1 point, 7 comments)
    3. Bitcoin is Maturing, Crypto Growth Surprisingly Positive Reveals Study (0 points, 3 comments)
  15. 358 points, 1 submission: musicfan39
    1. Bitcoin all-time price graph (Aug 2010 – Oct 2018) (358 points, 84 comments)
  16. 311 points, 5 submissions: TheGreatMuffin
    1. Bitfinex' statement on fiat deposits/withdrawals (tldr: fiat and crypto withdrawals working, fiat deposits temporarily paused) (103 points, 52 comments)
    2. Bitfinex suspends all fiat deposits, “expects the situation to normalize within a week” (78 points, 62 comments)
    3. Fidelity gives a nod to OG cypherpunks (mentioning Adam Back, Nick Szabo, David Chaum) and bitcoin's precursors in their newest blog post (78 points, 0 comments)
    4. full video of the US Senate hearing on cryptocurrency: with P. Van Valkenburgh and N. Roubini as witnesses (starts at minute 16) (31 points, 5 comments)
    5. Interview with one of the creators of the Samourai wallet (21 points, 1 comment)
  17. 305 points, 1 submission: 6maud
    1. Jamie Dimon: Bitcoin is a scam. Also Jamie Dimon: Let's file 20 blockchain patents so we don't miss out on this blockchain thing. facepalm (305 points, 93 comments)
  18. 274 points, 2 submissions: undertheradar48
    1. $6.9 trillion of assets just got access to the world of crypto! (169 points, 24 comments)
    2. 1.65 Million people are attending over 5,000 Bitcoin meetups around the world. Organic interest/curiosity is real! (105 points, 41 comments)
  19. 265 points, 1 submission: NoGooderr
    1. Shorters, are you okay? (265 points, 123 comments)
  20. 253 points, 5 submissions: _smudger_
    1. Bakkt CEO: We're About To See A Cryptocurrency Revolution (130 points, 29 comments)
    2. Our team, launch and advocacy – Bakkt Blog – Medium (104 points, 33 comments)
    3. Coinbase's Adam White is joining Bakkt as its COO - The Block (16 points, 1 comment)
    4. The Bright Side of the 2018 Bitcoin Bear Market – Wes Carlson – Medium (2 points, 0 comments)
    5. Analysis: ErisX & Bakkt Are All in on the Battle for Institutional Cash (1 point, 0 comments)
  21. 247 points, 1 submission: Fly115
    1. It would be impossible for every Fidelity brokerage customer to own even one Bitcoin. This is why Bitcoins are worth thousands of dollars, while a dollar is only worth one dollar (and only until next year when when it's worth 97 cents). - Erik Voorhees (247 points, 129 comments)
  22. 237 points, 1 submission: manfromnantucket1984
    1. Bear markets are for building! 🐻⚡ While the price is doing what it does, we continue to build the #LightningNetwork at the #LightningHackdayNYC in New York on October 27th/28th 2018. Speakers like Christian Decker, Matt Corallo and Peter Todd will take you down the rabbit hole. (237 points, 15 comments)
  23. 232 points, 1 submission: TheMidnightMatinee
    1. Guys lets rally and show your support for an BTC ETF! Here's why! (232 points, 63 comments)
  24. 231 points, 2 submissions: installeris
    1. Fidelity just made it easier for hedge funds and other pros to invest in cryptocurrencies (169 points, 36 comments)
    2. Nouriel Roubini has always been talking sh*t about Bitcoin. And he's always wrong. (62 points, 29 comments)
  25. 226 points, 1 submission: lewtr
    1. An easter egg in the Bitcoin genesis block code (226 points, 40 comments)
  26. 218 points, 1 submission: Unusual_Mountain
    1. Bitcoin as a safe haven from monetary policy can help keep governments and banks honest. It doesn't have to replace them. (218 points, 85 comments)
  27. 214 points, 1 submission: Mobilenewsflash
    1. Roubini (214 points, 50 comments)
  28. 212 points, 1 submission: CardCollector1
    1. Getting Started with BTCPay Server - Free and Open Source Bitcoin and Lightning Network payment processor (212 points, 75 comments)
  29. 201 points, 1 submission: yonstonston
    1. Sorry guys, i bought BTC yesterday... (201 points, 72 comments)
  30. 161 points, 2 submissions: linzex
    1. A Bitcoin Lesson From A Yogi Master (93 points, 6 comments)
    2. ChangeNow Exchange Accused of $70,000 Theft (68 points, 8 comments)
  31. 159 points, 3 submissions: zappadoing
    1. greetings from holidays - I thought I won't have to read anything about bitcoin this time... (130 points, 12 comments)
    2. Telegram down! Lots of Bitcoin-Groups not accessible. We need something decentralized. (19 points, 26 comments)
    3. Colleges Are Baffled by Bitcoin Donations (10 points, 0 comments)
  32. 159 points, 1 submission: Crevative
    1. Zimbabwe spirals into economic chaos as fears of another round of hyperinflation begin to spark - another fiat currency fails! (159 points, 20 comments)
  33. 147 points, 1 submission: lexihayes99
    1. Just wanted to remind people of a simpler time :) (147 points, 196 comments)
  34. 146 points, 1 submission: Rare_Ad
    1. Bitcoin was a tool that was born of the economic crisis some 10 years ago, does that mean another big recession or banking collapse could catapult it forward? (146 points, 87 comments)
  35. 146 points, 1 submission: vmrey
    1. Buda, the largest crypto exchange by volume in Chile, is one of the first to incorporate Lightning network. (146 points, 14 comments)
  36. 145 points, 1 submission: wwwdata
    1. I own crypto but not Bitcoin. (145 points, 243 comments)
  37. 141 points, 9 submissions: expertbit
    1. This E-Bike Accepts Payments With Bitcoin's Lightning Network (51 points, 3 comments)
    2. Bitcoin [BTC] transfers will become a lot faster with Liquid Network, says Jimmy Song (37 points, 58 comments)
    3. Top Universities Are Now Investing in Cryptocurrency Funds (18 points, 0 comments)
    4. Indian Exchange Unocoin Could Launch Crypto ATMs (17 points, 0 comments)
    5. Bitcoin Price Stability -- A Bullish Or Bearish Sign? (15 points, 1 comment)
    6. Don’t Underestimate China’s Power In Bitcoin (2 points, 3 comments)
    7. Bitcoin Price Analysis: Bulls Defend Yearly Support Amidst Wall Street Slump (1 point, 0 comments)
    8. Bitcoin Network Comes To A Standstill In China (0 points, 2 comments)
    9. Bitcoin Price Jumps by $600 to Reach One-Month High Above $6.9k (0 points, 0 comments)
  38. 137 points, 1 submission: diditmakesound
    1. Everyone still buying right now (137 points, 30 comments)
  39. 135 points, 1 submission: gattacibus
    1. POLONIEX suspends Bitcoin withdrawals (135 points, 86 comments)
  40. 129 points, 3 submissions: nopara73
    1. Wasabi Wallet added OSX support. Please consider testing it. (55 points, 25 comments)
    2. Scoring Bitcoin Wallets (38 points, 25 comments)
    3. A Technical Overview of Wasabi Wallet, Future Ideas, Plans and Strategy (36 points, 1 comment)
  41. 123 points, 1 submission: Big_Bluefin
    1. Live from Fremont Street in Las Vegas (123 points, 20 comments)
  42. 121 points, 1 submission: agustinf
    1. Latin American Exchange Buda.com adds Lightning Network payments for all. (121 points, 17 comments)
  43. 118 points, 2 submissions: TheCrunk1
    1. Fidelity launches new company for trading, storing cryptocurrencies (98 points, 26 comments)
    2. Binance launches fiat-to-crypto exchange in Uganda (20 points, 7 comments)
  44. 112 points, 1 submission: Thinkmoreaboutit
    1. "Over the weekend I sent a bitcoin transaction to a relay 12.6km away with no cell network or internet connection. Here's a tweetstorm about how I used @gotenna and @SamouraiWallet to do it" [email protected] (112 points, 20 comments)
  45. 111 points, 1 submission: Jackieknows
    1. When it comes to your coins, keep it quiet. – Trezor Blog (111 points, 10 comments)
  46. 110 points, 1 submission: 100ravp
    1. Someone solved the 310.00 BTC challenge (110 points, 87 comments)
  47. 110 points, 1 submission: loulan
    1. There was an attempt (110 points, 78 comments)
  48. 106 points, 1 submission: king-only
    1. Breez, a Lightning Network mobile client, is now fully open sourced (106 points, 19 comments)
  49. 101 points, 2 submissions: HodlingToTheMoon
    1. Websites using Joomla (second most popular platform after Wordpress), can now be enabled with Bitcoin payments - In less than 5 min! (98 points, 5 comments)
    2. Got business on your mind? Here are 7 easy and genuine ideas to start a Bitcoin-centric e-commerce store! (3 points, 0 comments)
  50. 98 points, 1 submission: ubunt2
    1. Fidelity Starts Crypto Unit to Serve Wall Street Customers (98 points, 4 comments)
  51. 97 points, 1 submission: CosmicHemorroid
    1. Lightning Powered E-bike #Reckless (97 points, 22 comments)
  52. 96 points, 3 submissions: DesignerAccount
    1. Bitcoin is all grown up! (83 points, 6 comments)
    2. [Bitcoin OpSec - Keep your coins safe] Detailed breakdown of sophisticated scam (12 points, 6 comments)
    3. Infographic - How do UTXOs work? (1 point, 0 comments)
  53. 96 points, 1 submission: bowlingfries
    1. Bitcoin kiosk in Portland OR weed dispensary (96 points, 21 comments)
  54. 94 points, 1 submission: nassimmontreal
    1. #roubinilovescrypto (94 points, 37 comments)
  55. 92 points, 2 submissions: ella11price
    1. Selling goods and items for Bitcoin should be easy. I built a marketplace similar to eBay so people can sell anything for crypto. This video explains it. (91 points, 63 comments)
    2. The best ways to earn bitcoin and cryptocurrency. Includes how to spot a scam (1 point, 0 comments)
  56. 91 points, 1 submission: ytcoinartist
    1. The Golden Pineapple, a 3D combination puzzle for all ages and free to play. Be the first to solve the final level and win 1 BTC, courtesy of The Pineapple Fund. http://pineapplearcade.net/arcade-game/pineapple (91 points, 25 comments)
  57. 89 points, 1 submission: Rachsuchtig
    1. An BTC ATM at Austria/Salzburg Shopping Arena, totally surprised to see (89 points, 11 comments)
  58. 87 points, 2 submissions: Ishan1121
    1. Bitcoin proves once again its the best way to transfer money! $194 million transferred for 10 cents. (87 points, 18 comments)
    2. Discussion: So Bitcoin rises as fake news on Binance delisting Tether (USDT) goes viral...removing Tether completley will affect the market positively? THoughts? (0 points, 6 comments)
  59. 87 points, 1 submission: Blixx87
    1. I finally figured it out! We have been forming a Dorito Pattern and it’s on it’s way to the cheese dip. (87 points, 49 comments)
  60. 86 points, 8 submissions: EffigyBoy
    1. Venezuelans Play RuneScape To Make Small Profit In Bitcoin (31 points, 4 comments)
    2. CFTC Chair On Bitcoin Expansion: "We Are Seeing More Institutional Movement Into This Area" (26 points, 0 comments)
    3. The Indian Government is Considering to Launch Its Own Cryptocurrency to Avoid Citizens Using Bitcoin (13 points, 14 comments)
    4. The Congress Is Groping In The Dark To Handle Cryptocurrencies. Bitcoin has come into the mainstream. (6 points, 0 comments)
    5. After Stock Markets Plunge Cryptocurrency Whale Dumps over 22 100 BTC (5 points, 11 comments)
    6. Scientific Journal 'Chaos' Favors Bitcoin – As stable as Oil and Dollar Markets (2 points, 1 comment)
    7. The First Physical Cryptocurrency Store in The U.S. Launches on October 20 (2 points, 1 comment)
    8. Omniex and Gemini Struck A Partnership to Support Institutional Investors (1 point, 0 comments)
  61. 85 points, 2 submissions: jakesonwu
    1. Release - Eclair v0.2-beta7 - Compatible with Bitcoin Core 0.17.0 (75 points, 8 comments)
    2. Lord Keynes Would Be Proud (10 points, 1 comment)
  62. 84 points, 2 submissions: renepickhardt
    1. ECDSA is not that bad: two-party signing without Schnorr or BLS (by Stepan Snigirev) (53 points, 7 comments)
    2. Last week in Lightning Network: A weekly collection of lightning network (and related) news on Twitter (31 points, 6 comments)
  63. 83 points, 3 submissions: OldCarpet54
    1. [GIVEAWAY] Crypto Invest Summit – Wozniak, Gupta, Morehead (82 points, 1 comment)
    2. blockchain news: from SF Blockchain Week and XBlockchain (1 point, 0 comments)
    3. Buterin | SpankChain | Kambria: San Francisco Blockchain Week (0 points, 0 comments)
  64. 83 points, 1 submission: -elektro-pionir-
    1. AMA with Bitcoin engineer Jameson Lopp (83 points, 21 comments)
  65. 80 points, 3 submissions: ysangkok
    1. Bitcoin script discussion at Scaling Bitcoin: "Sporks are probabilistic soft-forks [...] where instead of [...] version bits if the blockhash has some [...] PoW below some threshold, it activates. [...] [E.g.] you have an expectation of 6 months to get your shit together. Doing it live." (28 points, 3 comments)
    2. Multi-Hop Locks for Secure, Privacy-Preserving and Interoperable Payment-Channel Networks (27 points, 8 comments)
    3. Scaling Bitcoin Kaizen - Scriptless scripts, adaptor signatures and their applications (25 points, 2 comments)
  66. 78 points, 3 submissions: mkuraja
    1. What's the difference between Lightning Network and Liquid Network? (57 points, 41 comments)
    2. Need some fresh, new FOMO in your life? Reenter, Trace Mayer. (15 points, 1 comment)
    3. This American tourist thought I'd see "Bitcoin Accepted Here" all over Tokyo, Japan but not one place found yet. (6 points, 17 comments)
  67. 77 points, 1 submission: Miladran
    1. Fidelity Says It Will Trade Bitcoin for Hedge Funds (77 points, 1 comment)
  68. 77 points, 1 submission: pandaman200
    1. Swiss Crypto Fund Obtains Country’s First Crypto Asset Management License (77 points, 4 comments)
  69. 75 points, 3 submissions: mickhick95
    1. I purchased a goTenna to broadcast my BTC transactions with TxTenna and Samourai Wallet. (44 points, 15 comments)
    2. I saw a Bitcoin ATM and I had to make a purchase. (28 points, 41 comments)
    3. 303-ish Days in the BTC Bear Market, This Sideways Motion Looks Like A Turn Around!!! (3 points, 16 comments)
  70. 75 points, 1 submission: hcarpach
    1. Venezuelan cryptocurrency miner: “we are police’s most wanted” (75 points, 21 comments)
  71. 73 points, 6 submissions: WorkCoin_Team
    1. “Bitcoin enables certain uses that are very unique. I think it offers possibilities that no other currency allows. For example the ability to spend a coin that only occurs when two separate parties agree to spend the coin; with a third party that couldn’t run away with the coin itself.” – Pieter Wui (66 points, 14 comments)
    2. Revolution of Bitcoin (5 points, 3 comments)
    3. A Funny Bitcoin Thought (2 points, 20 comments)
    4. Getting started with Bitcoin (0 points, 1 comment)
    5. Make your foundation strong (0 points, 0 comments)
    6. What are you not willing to compromise? (0 points, 6 comments)
  72. 73 points, 1 submission: ozdixon
    1. Bitcoin accepted at a absenth bar in Prague. (73 points, 11 comments)
  73. 72 points, 1 submission: Itasia
    1. What Are Atomic Swaps? Ultimate Guide (72 points, 16 comments)
  74. 71 points, 1 submission: MannyAndDrChurchShow
    1. I wonder if they would still honor this card.... (71 points, 9 comments)
  75. 68 points, 4 submissions: grittygatorr
    1. Liquid Network - the world’s first production Bitcoin sidechain has officially gone live (65 points, 100 comments)
    2. XDEX Advertises Commission-Free Bitcoin Trading in Brazil (2 points, 0 comments)
    3. Coinfloor to Cut on Staff and Reorganize Amid Volume Fluctuations in the Crypto Markets (1 point, 0 comments)
    4. Barclays Temporarily Suspends Work on Cryptocurrency Trading Project (0 points, 1 comment)
  76. 68 points, 1 submission: WouterGlorieux
    1. Introducing 'The Bitcoin Spellbook': an open-source REST API server for the back-end of (almost) any Bitcoin application. (Think of it as your own IfThisThenThat server but for Bitcoin) (68 points, 3 comments)
  77. 67 points, 1 submission: Vaultoro_official
    1. Leading up to the LightingNetwork Hackathon in NY, I thought I would post the talks we filmed at the Berlin lightningHackDay. Some amazing talks! (67 points, 1 comment)
  78. 65 points, 1 submission: Komodor123
    1. Do you speak more than one language? Then help spread Bitcoin around the world by translating Bitcoin.org! (65 points, 28 comments)
  79. 63 points, 1 submission: Sandiegosurf1
    1. Fidelity Launches Institutional Crypto Trading and Clearing. Let the institutional money flow! (63 points, 1 comment)
  80. 63 points, 1 submission: TearAnus-SoreAssRekt
    1. Buying PC Games With Bitcoin: Site Reviews (with some accepting Lightning!) (63 points, 7 comments)
  81. 62 points, 1 submission: CryptoCloaks
    1. We finally got our RaspiBlitz case to a level we love! Time for load testing to check thermals, final mods are almost done! (62 points, 10 comments)
  82. 61 points, 1 submission: sagiher
    1. #Liberte#CaribbeanBitcoin#ShoutOutToAllBitcoinDeveloperOutThere (61 points, 9 comments)

Top Commenters

  1. PragmaticParadox (465 points, 7 comments)
  2. ikarienator (462 points, 1 comment)
  3. Hanspanzer (434 points, 106 comments)
  4. Toyake (434 points, 71 comments)
  5. uglymelt (394 points, 3 comments)
  6. UsherTechs (377 points, 1 comment)
  7. isdudu (345 points, 4 comments)
  8. TyroneTheDriver (307 points, 1 comment)
  9. Rattlesnake_Mullet (296 points, 11 comments)
  10. andycam7 (282 points, 3 comments)
  11. dmdeemer (275 points, 1 comment)
  12. BTCkoning (266 points, 114 comments)
  13. CP70 (257 points, 7 comments)
  14. ascension8438 (239 points, 7 comments)
  15. Fly115 (226 points, 9 comments)
  16. haribo_2016 (220 points, 4 comments)
  17. dsmid (214 points, 1 comment)
  18. i_gotta_say (208 points, 87 comments)
  19. TheGreatMuffin (206 points, 56 comments)
  20. ebaley (198 points, 34 comments)
  21. bitsteiner (185 points, 86 comments)
  22. Redditridder (181 points, 5 comments)
  23. KupKhunKrap (173 points, 36 comments)
  24. 45sbvad (169 points, 3 comments)
  25. c3corvette (165 points, 2 comments)
  26. killerstorm (163 points, 8 comments)
  27. evilgrinz (158 points, 48 comments)
  28. chronic_nervosa (140 points, 1 comment)
  29. bigdaddysdick (136 points, 7 comments)
  30. castorfromtheva (129 points, 27 comments)
  31. Touchmyhandle (125 points, 12 comments)
  32. Euphoricsoul (122 points, 1 comment)
  33. WaterMac27 (122 points, 1 comment)
  34. DSXIII (118 points, 1 comment)
  35. RIMS_REAL_BIG (117 points, 24 comments)
  36. cryptogrip (112 points, 39 comments)
  37. WalterRyan (108 points, 10 comments)
  38. sudophant (107 points, 5 comments)
  39. NotSeeTroll (104 points, 37 comments)
  40. deadleg22 (104 points, 10 comments)
  41. shared_makes_it_real (103 points, 26 comments)
  42. alexiglesias007 (103 points, 7 comments)
  43. Buttoshi (102 points, 68 comments)
  44. flunderbossanova (102 points, 59 comments)
  45. lexihayes99 (101 points, 28 comments)
  46. mabezard (101 points, 2 comments)
  47. peniswithahoodie (98 points, 1 comment)
  48. beloboi (96 points, 65 comments)
  49. vovr (89 points, 3 comments)
  50. segells4soulsmogoblo (89 points, 1 comment)
  51. damchi (87 points, 21 comments)
  52. smadgerano (81 points, 14 comments)
  53. time_wasted504 (80 points, 34 comments)
  54. joeknowswhoiam (80 points, 16 comments)
  55. diydude2 (79 points, 26 comments)
  56. sQtWLgK (79 points, 17 comments)
  57. 989x4000 (78 points, 22 comments)
  58. sreaka (78 points, 16 comments)
  59. YoungScholar89 (78 points, 6 comments)
  60. Ellipso (76 points, 2 comments)
  61. HitsABlunt (76 points, 1 comment)
  62. almkglor (75 points, 39 comments)
  63. MrRGnome (75 points, 37 comments)
  64. Daddeus65 (75 points, 28 comments)
  65. whalecheetah (75 points, 25 comments)
  66. BCash_BeTrash (75 points, 23 comments)
  67. cipher-space (75 points, 19 comments)
  68. bnuttall (72 points, 2 comments)
  69. chrisrico (71 points, 26 comments)
  70. esdraelon (71 points, 8 comments)
  71. ale1ormont (71 points, 2 comments)
  72. igadjeed (70 points, 42 comments)
  73. Holographiks (70 points, 19 comments)
  74. frankieboy07 (70 points, 2 comments)
  75. snazzycoins (69 points, 12 comments)
  76. dmar198 (69 points, 11 comments)
  77. protoman86 (69 points, 7 comments)
  78. bitbug42 (68 points, 5 comments)
  79. CardCollector1 (66 points, 16 comments)
  80. hawks5999 (66 points, 7 comments)
  81. DefiantVerse (65 points, 12 comments)
  82. psionides (65 points, 8 comments)
  83. btc-forextrader (64 points, 37 comments)
  84. UniqueNewQuark (63 points, 5 comments)
  85. imaducksfan (63 points, 1 comment)
  86. bitusher (62 points, 23 comments)
  87. homad (62 points, 13 comments)
  88. torbitonsa (62 points, 7 comments)
  89. violencequalsbad (62 points, 7 comments)
  90. wwwdata (61 points, 20 comments)
  91. LadyRosedancer (61 points, 1 comment)
  92. Nunoyabiznes (60 points, 22 comments)
  93. pg3crypto (60 points, 13 comments)
  94. XxArmadaxX (60 points, 4 comments)
  95. awertheim (59 points, 27 comments)
  96. Ploxxx69 (59 points, 1 comment)
  97. TheGlassStone (59 points, 1 comment)
  98. moodytomatoes (58 points, 39 comments)
  99. Sneakybobo (58 points, 13 comments)
  100. UniqueCandy (58 points, 8 comments)

Top Submissions

  1. Anti-crypto propaganda... promoted by American Express by Alexsayzz (4526 points, 513 comments)
  2. Someone just paid $0.10 to move $194M (29,999 BTC). Think about how powerful that is for a second. by MoonMan_666 (2369 points, 380 comments)
  3. When your boss thanks you for staying late at work but you were just watching the Bitcoin price and lost track of time by _Logicrypto (2077 points, 69 comments)
  4. ⚡Lightning Network at the Senate - Counterargument to Roubini's speech that Bitcoin can never scale to serve the planet by bitbug42 (1496 points, 186 comments)
  5. Why sell and pay capital gains, why not wait for mass adoption? That's my motto. by opencoins (1417 points, 244 comments)
  6. Took a while but finally part of the picture club (had to wait on the web browser update!) by awertheim (1174 points, 127 comments)
  7. Feeling good? by Hodl_it (853 points, 215 comments)
  8. Bitcoin ATM operator gets the $62,500 that police confiscated back by cointastical (833 points, 110 comments)
  9. Congratulations US senators for understanding crypto better than this guy by JandyJammer (748 points, 125 comments)
  10. ...in case you missed the laura shill burn today by lesbiansareoverrated (704 points, 100 comments)

Top Comments

  1. 462 points: ikarienator's comment in Feeling good?
  2. 456 points: PragmaticParadox's comment in Anti-crypto propaganda... promoted by American Express
  3. 387 points: uglymelt's comment in ⚡Lightning Network at the Senate - Counterargument to Roubini's speech that Bitcoin can never scale to serve the planet
  4. 377 points: UsherTechs's comment in When your boss thanks you for staying late at work but you were just watching the Bitcoin price and lost track of time
  5. 342 points: isdudu's comment in Anti-crypto propaganda... promoted by American Express
  6. 307 points: TyroneTheDriver's comment in Anti-crypto propaganda... promoted by American Express
  7. 276 points: andycam7's comment in Why sell and pay capital gains, why not wait for mass adoption? That's my motto.
  8. 275 points: dmdeemer's comment in Someone just paid $0.10 to move $194M (29,999 BTC). Think about how powerful that is for a second.
  9. 268 points: Rattlesnake_Mullet's comment in Someone moved 12,220 BTC ($82M) in block 545,877
  10. 244 points: CP70's comment in Anti-crypto propaganda... promoted by American Express
Generated with BBoe's Subreddit Stats
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How To Move Your Bitcoin From Gemini To Binance What is Bitcoin? - YouTube 5 minut za Bitcoin: Ali bo Bitcoin prišel do 5000 USD? Un Gran Misterio se Esconde detrás del Bitcoin - YouTube 5 minut za Bitcoin: Pripravite si padalo Binance para iniciantes - veja como usar essa exchange de ... What is Bitcoin? Bitcoin Explained Simply for Dummies ... 5 minut za Bitcoin: Do katere cene bo padel Bitcoin? Bitcoin hack download free blockchain software 2019 5 minut za Bitcoin: Kmalu bo sledila sprememba smeri

A Bitcoin Improvement Proposal (BIP) is a design document, typically describing a new feature for Bitcoin with a concise technical specification of the feature and the rationale for it. This is broadly similar to the way in which Internet "Request for Comments" (RFCs) and the Python computer language's "Python Enhancement Proposals" (PEPs) are used. ... Kryptografia to gałąź wiedzy o szyfrowaniu wiadomości, wchodząca w skład dziedziny nauki zwanej kryptologią. Od samego początku towarzyszy Blockchainowi oraz Bitcoin Cash(BCH)是一种点对点电子现金系统,旨在实现"低费用小交易,大型商业交易和无许可支出的新经济体"。 -比特币现金源自比特币的升级建议,将最大区块大小从1兆字节增加到8兆字节,最终导致于2017年8月1日进行了硬分叉。从那时起,已批准了其他更改,例如新的难度调整算法,对新操作码的 ... ECDSA is used extensively for crypto-currencies such as Bitcoin, Ethereum (secp256k1 curve), NEO (NIST P-256 curve) and much more. This library can be used to create MultiSig and ThresholdSig crypto wallet. For a full background on threshold signatures please read our Binance academy article Threshold Signatures Explained. Library Introduction ^ "RFC 6979 - Deterministic Usage of the Digital Signature Algorithm (DSA) and Elliptic Curve Digital Signature Algorithm (ECDSA)". Retrieved February 24, 2015. ^ "The Double-Base Number System in Elliptic Curve Cryptography" (PDF). Retrieved April 22, 2014. ^ Bendel, Mike (December 29, 2010). Bitcoin ATM Last updated December 02, 2019 Cryptocurrency ATM in Peoria, Illinois. This model is a "two-way", meaning users may buy or sell Bitcoin and other cryptocurrencies. A Bitcoin ATM (Automated Teller Machine) is a kiosk that allows a person to purchase Bitcoin by using cash or debit card.Some Bitcoin ATMs offer bi-directional functionality enabling both the purchase of Bitcoin as well ... ECDSA. ECDSA stands for Elliptic Curve Digital Signature Algorithm. This is a Digital Signature Algorithm (DSA) that uses an elliptic curve cipher. The Bitcoin network utilizes this to ensure that only authorized parties can spend their bitcoins. Bitcoin Private is a merge fork of Bitcoin and Zclassic. Zclassic is a fork of Zcash, an implementation of the Zerocash whitepaper. Zclassic was released in November 2016, [non-primary source needed] [irrelevant citation] by blockchain developer Rhett Creighton. Creighton used the same code as Zcash, with a lack of a founders fee required to mine a valid block. [non-primary source needed ... Creation. The domain name "bitcoin.org" was registered on 18 August 2008. On 31 October 2008, a link to a paper authored by Satoshi Nakamoto titled Bitcoin: A Peer-to-Peer Electro From Bitcoin Wiki. Jump to: navigation, search. WARNING. Before reading this page, users should note that messing with ECDSA private keys is very dangerous and can result in losing bitcoins, even long after the import. It is recommended that outside of self-generated vanity addresses, users should never import (or export) private keys. Contents. 1 Using Blockchain.info; 2 Using BIPS; 3 Using ...

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How To Move Your Bitcoin From Gemini To Binance

This video is unavailable. Watch Queue Queue. Watch Queue Queue Bitcoin - Wikipedija, prosta enciklopedija - Vsakemu naslovu Bitcoin, ki je analogen računu v bančnem sistemu, pripada par javnega in zasebnega ključa ECDSA iz domene asimetrične kriptografije ... Subscribe to my channel for more videos showing how to create passive income with Cryptocurrency. Start buying Bitcoin now with a FREE account by clicking he... A quick guide on the Bitcoin blockchain and how to buy BTC with a wallet. How to mine cryptocurrency: https://www.youtube.com/watch?v=U9JIanRXsfU Coinbase: h... Bitcoin - Wikipedija, prosta enciklopedija - Vsakemu naslovu Bitcoin, ki je analogen računu v bančnem sistemu, pripada par javnega in zasebnega ključa ECDSA iz domene asimetrične kriptografije ... Start trading Bitcoin and cryptocurrency here: http://bit.ly/2Vptr2X Bitcoin is the first decentralized digital currency. All Bitcoin transactions are docume... La famosa criptomoneda denominada Bitcoin, arrastra un gran secreto, un misterio que se esconde detrás de su desconocido creador, Satoshi Nakamoto, un anónim... #Cryptotab script free bitcoins how to earn free bitcoins how to earn bitcoins cryptotab hack bitsler script bitcoin generator how to get bitcoins bitcoin miner 2019 how to mine bitcoins cryptotab ... Binance para iniciantes - veja como usar essa exchange de Bitcoin! Tutorial 2019/2020 - Link: https://cryptotchaps.com/link/binance • Binance: https://crypto... Bitcoin - Wikipedija, prosta enciklopedija - Vsakemu naslovu Bitcoin, ki je analogen računu v bančnem sistemu, pripada par javnega in zasebnega ključa ECDSA iz domene asimetrične kriptografije ...

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