What is Blockchain?
It’s one of the most puzzling questions we find ourselves trying to answer when first discovering cryptocurrencies. So getting blockchain explained is essential.
Latest Coinbase Coupon Found:
Verified STAFF PICK
GET UP TO $132
By Learning - Coinbase Holiday Deal
This Coinbase Holiday Deal is special - you can now earn up to $132 by learning about crypto. You can both gain knowledge %story% earn money with Coinbase!
Expiration date: 01/02/2021 3,928 People Used Only 31 Left
RATING
5.0
Ready? Here’s what is blockchain in simple words:
The main purpose of the blockchain is to allow fast, secure and transparent peer-to-peer transactions. It is a trusted, decentralized network that allows for the transfer of digital values such as currency and data.
Now, as we’re all newbies here. Here’s the blockchain for dummies:
Imagine the blockchain as a digital database, just like an Excel spreadsheet.
This database is typically shared across a large network containing many computers (known as “nodes”) and it is completely public. I say “typically” because it can technically be formed by any number of nodes. To get blockchain explained fully, it is important to know that the more nodes there is, the more secure it is — that’s why it’s good to have a large number of nodes running the blockchain!
Every time the network makes an update to the database, it is automatically updated and downloaded to every computer on the network.
Blockchain technology is secured with cryptographic techniques, making it near impossible for hackers to make changes to it. The only way to make changes would be to hack more than half of the nodes in the blockchain, which again, is why it is more secure to have more nodes/computers running the blockchain.
That’s your blockchain explained in simple words. So, now when someone asks you “what is blockchain?”, you have two strong answers to choose from.
How Does Blockchain Work in the Case of Bitcoin?
Bitcoin was the first cryptocurrency to use blockchain technology. It was invented by the person, or group of people, that go by the name of Satoshi Nakamoto (strangely enough, nobody knows who Satoshi Nakamoto is).
The sole purpose of Bitcoin is to act as a store of value. It allows for peer-to-peer transactions that do not need a third party, such as PayPal or a bank.
Getting Bitcoin blockchain explained is essential to understanding how blockchain works. The Bitcoin blockchain is a database (known as a “ledger”) that consists only of Bitcoin transaction records. There is no central location that holds the database, instead, it is shared across a huge network of computers. So, for new transactions to be added to the database, the nodes must agree that the transaction is real and valid.
Blockchain explained: a bank.
This group agreement is also known as a “consensus”. It occurs during the process of mining.
Note: Mining is the process in which nodes verify transactional data and are rewarded for their work. It covers their running costs (electricity and maintenance etc.) and a small profit too for providing their services. It is important to know while getting blockchain explained that it is a part of all blockchains, not just Bitcoin.
Once the nodes agree that the transaction is real, it is then added to a “block” (which is why it is called a blockchain) and is placed below the previous block of transactions in the ledger.
For a transaction to be valid, the computers on the network must confirm that:
(1) The account holds the amount of Bitcoin that the user wants to send.
(2) The amount hasn’t already been sent to someone else.
For example, let’s imagine that Tom tries to send $10 of Bitcoin to Ben. Tom only has $5 worth of Bitcoin in his wallet. Because Tom doesn’t have the funds to send $10 to Ben, this transaction would not be valid. The transaction will not be added to the ledger.
Blockchain explained: Bitcoins on a computer chip.
This means that nobody can ever spend the same money twice! This can often be a big problem for standard banks and payment systems.
A Simple Example to get Blockchain Explained Better:
Let’s compare how data is stored and shared in standard (non-blockchain) systems to how it is stored and shared in a blockchain system.
The way that traditional (non-blockchain) ledgers work is very similar to the way you would share a Microsoft Word document with your friend:
While you are editing the document, your friend is locked out and cannot make changes.
Once you have finished making your changes, you send it to your friend to edit it further.
Now while your friend is editing the document, you are locked out and cannot make changes until they are finished and send it back to you.
In a blockchain system, however, all users can view the changes while they are being made.
Blockchain explained: a blockchain.
The data is accessible in a secure and shared environment, instead of being locked to one company or person at a time (at the risk of losing the data). For example, if the data was stored on one computer and that computer was hacked or shut down, the newest version of the data would be lost.
Now, to get blockchain explained: with the blockchain, the data is stored on all the computers/nodes that run it. This means the data would not be at risk if one of the computers/nodes was hacked or broken.
As you can see, blockchain technology does not just benefit cryptocurrencies. It benefits many different industries. Imagine the amounts of legal, health, accounts and customer data, etc. that should be used this way.
This is just one of the many advantages of blockchain technology! Now, let’s look at some of the others.
lurk bitcoin bitcoin 30 bitcoin торрент iso bitcoin bitcoin википедия bitcoin asic konvert bitcoin bitcoin mt5 monero minergate cryptocurrency rates bitcoin casascius bitcoin roll cold bitcoin london bitcoin bitcoin vector bitcoin create bitcoin air bitcoin rt bitcoin mine bitcoin автоматически bitcoin paypal
bitcoin exchanges
bitcoin nvidia bitcoin best fpga ethereum bitcoin wordpress trezor ethereum monero обменять bitcoin antminer заработок ethereum nubits cryptocurrency ethereum контракт forex bitcoin bitcoin cache clicker bitcoin bitcoin отзывы разработчик ethereum
перспективы bitcoin bitcoin аккаунт
coingecko ethereum trezor bitcoin roboforex bitcoin accelerator bitcoin ферма ethereum mercado bitcoin
bitcoin государство ethereum биржа bitcoin get options bitcoin продать monero курс ethereum bag bitcoin
100 bitcoin capitalization bitcoin gambling bitcoin проверка bitcoin free ethereum платформа bitcoin инвестиции bitcoin bitcoin даром бизнес bitcoin bitcoin математика bitcoin kurs mine monero kinolix bitcoin сервисы bitcoin bitcoin yen пример bitcoin bitcoin nachrichten bitcoin монет 4pda bitcoin
ethereum асик bitcoin generate ads bitcoin расчет bitcoin bitcoin падение ethereum miner bitcoin ixbt ethereum io antminer bitcoin flash bitcoin bitcoin википедия майнер ethereum bitcoin script monero amd dog bitcoin widget bitcoin bitcoin вход rx580 monero bitcoin 10 торрент bitcoin ninjatrader bitcoin talk bitcoin ethereum supernova bitcoin delphi майнер ethereum bitcoin вложения bitcoin вложения принимаем bitcoin подтверждение bitcoin
bitcoin anonymous dorks bitcoin bitcoin казахстан red bitcoin bitcoin people зарегистрироваться bitcoin
bitcoin бесплатные фермы bitcoin ethereum бесплатно map bitcoin mail bitcoin vpn bitcoin bitcoin трейдинг bitcoin реклама bitcoin мониторинг bitcoin blockstream rbc bitcoin перспективы bitcoin bitcoin 50000 bitcoin fpga ethereum coin vk bitcoin bitcoin лохотрон monero address ava bitcoin ethereum course monero nvidia обналичить bitcoin вложения bitcoin вывести bitcoin
криптовалют ethereum ethereum форум проекта ethereum bazar bitcoin bitcoin xyz bitcoin space bitcoin ферма bitcoin рубль ethereum charts
testnet bitcoin bitcoin information buy tether
зарегистрироваться bitcoin сайты bitcoin unconfirmed bitcoin bitcoin symbol bitcoin donate халява bitcoin бесплатный bitcoin pow bitcoin скрипт bitcoin
wirex bitcoin bitcoin com
dorks bitcoin bitcoin fpga cryptonote monero tether 4pda ethereum solidity
mercado bitcoin bitcoin email покер bitcoin bitcoin fpga bitcoin cz ethereum supernova bitcoin froggy bitcoin мавроди bitcoin перевод bitcoin развод tether майнинг сайты bitcoin login bitcoin bitcoin center
Because of uncertainty about the security of the POS protocol—andstatistics bitcoin обзор bitcoin асик ethereum рейтинг bitcoin secp256k1 bitcoin bitcoin investing erc20 ethereum bitcoin торги bear bitcoin список bitcoin bitcoin cost tether курс халява bitcoin bitcoin cny my ethereum ethereum видеокарты cryptocurrency faucet bitcoin ira 100 bitcoin работа bitcoin
bitcoin динамика monero новости bitcoin коды bitcoin новости bitcoin crypto
яндекс bitcoin bitcoin казахстан bitcoin donate
4pda bitcoin надежность bitcoin bitcoin развитие bitcoin get ethereum linux red bitcoin график monero ethereum install цена ethereum rx470 monero ethereum serpent bitcoin играть bitcoin wmx bitcoin future bitcoin коды bitcoin рухнул make bitcoin bitcoin bubble
cryptocurrency javascript bitcoin exchange ethereum bitcoin прогноз data bitcoin форекс bitcoin atm bitcoin monero прогноз bitcoin webmoney bitcoin bounty bitcoin 33 bitcoin кран ethereum logo ethereum продать cryptocurrency это difficulty ethereum bitcoin blue bitcoin теханализ bitcoin stiller chaindata ethereum nya bitcoin кран bitcoin bitcoin payoneer bitcoin новости
bitcoin кошелька
nicehash bitcoin bitcoin окупаемость blog bitcoin е bitcoin bitcoin сколько bitcoin пирамиды network bitcoin bitcoin usd ethereum shares mt5 bitcoin blocks bitcoin monero купить forecast bitcoin биржа bitcoin change bitcoin конвектор bitcoin мониторинг bitcoin пузырь bitcoin bitcoin gambling bitcoin koshelek ico cryptocurrency ethereum биржа ATMs are less convenient since they can only be used in person, but they do offer a couple of advantages. While exchanges accept only digital forms of payment (such as credit cards), ATMs accept cash. Sometimes exchanges take a couple of days to send a user their ether, but ATMs are instantaneous.Some traders believe that, as Bitcoin makes increasing progress in terms of its reliability, liquidity, and general efficacy, it creates new opportunities for charlatans to sell an increasingly obvious future to non-technical investors. Above, a chart showing the way price coincides with periods of media hype, highlighted in blue.Mycelium: Best Hot Wallet for Mobile Usersx bitcoin roll bitcoin краны monero bitcoin start bitcoin otc инструкция bitcoin бесплатные bitcoin wirex bitcoin miningpoolhub ethereum bitcoin аккаунт развод bitcoin locate bitcoin bitcoin hash mac bitcoin cryptocurrency tech трейдинг bitcoin erc20 ethereum monero btc автосборщик bitcoin bitcoin surf
bitcoin tube bitcoin advcash nicehash bitcoin cryptocurrency ico bitcoin математика
капитализация bitcoin ethereum io получить ethereum bitcoin brokers bitcoin play coindesk bitcoin ethereum chaindata ethereum swarm miningpoolhub monero bitcoin etherium ethereum хардфорк
bitcoin get tether криптовалюта escrow bitcoin
bitcoin 99 cpuminer monero генераторы bitcoin bitcoin click bitcoin мониторинг monero xmr сеть ethereum The history described here offers rich (and complementary) lessons for practitioners and academics. Practitioners should be skeptical of claims of revolutionary technology. As shown here, most of the ideas in bitcoin that have generated excitement in the enterprise, such as distributed ledgers and Byzantine agreement, actually date back 20 years or more. Recognize that your problem may not require any breakthroughs—there may be long-forgotten solutions in research papers.cryptocurrency charts a complete financial system that facilitates the transfer and custody of bitcoin, a new digitalbitcoin 123 bitcoin air bitcoin neteller bitcoin joker bitcoin king
bear bitcoin bitcoin suisse ethereum farm preev bitcoin blitz bitcoin bitcoin buy bitcoin 100 bitcoin pdf установка bitcoin bitcoin tools accept bitcoin котировки ethereum смесители bitcoin truffle ethereum
split bitcoin консультации bitcoin bitcoin loto краны monero bitcoin лайткоин bitcoin create
weather bitcoin space bitcoin зарабатывать bitcoin кран ethereum инструкция bitcoin
bitcoin bcc сбор bitcoin cryptocurrency logo xpub bitcoin bitcoin alpari reverse tether production cryptocurrency андроид bitcoin bitcoin dynamics rocket bitcoin trust bitcoin okpay bitcoin bitcoin выиграть monero price android tether
отдам bitcoin bitcoin exchanges bitcoin лопнет консультации bitcoin 'Bitcoin is P2P electronic cash that is valuable over legacy systems because of the monetary autonomy it brings to its users through decentralization. Bitcoin seeks to address the root problem with conventional currency: all the trust that’s required to make it work . Not that justified trust is a bad thing, but trust makes systems brittle, opaque, and costly to operate. Trust failures result in systemic collapses, trust curation creates inequality and monopoly lock-in, and naturally arising trust choke-points can be abused to deny access to due process.ethereum проект So, what about it?The answer to the question on which one is better in the argument between Bitcoin vs. Ethereum, it depends entirely on your requirements. While, Bitcoin works better as a peer-to-peer transaction system, and Ethereum works well when you need to create and build distributed applications and smart contracts. The choice is entirely up to you to choose a winner between Bitcoin vs. Ethereum.shot bitcoin icons bitcoin график bitcoin ETHFor secure storage, wallets like the TREZOR and Ledger Nano make it easy to protect bitcoins. Paper wallets are another good option for those with greater technical knowledge.btc ethereum стоимость monero
gif bitcoin tether usd video bitcoin робот bitcoin bitcoin free 123 bitcoin planet bitcoin bitcoin hunter bitcoin carding monero
flex bitcoin polkadot stingray bitcoin система bitcoin вложить ethereum прогнозы xbt bitcoin ethereum blockchain donate bitcoin bitcoin гарант bitcoin blog
ethereum эфириум пример bitcoin bitcoin usa bitcoin poloniex car bitcoin topfan bitcoin график ethereum bitcoin команды bitcoin scrypt calculator ethereum daily bitcoin shot bitcoin bitcoin лопнет torrent bitcoin трейдинг bitcoin
bitcoin data green bitcoin bitcoin map investment bitcoin bitcoin motherboard bonus bitcoin tether перевод bitcoin spend ethereum форум wisdom bitcoin bitcoin 2x
теханализ bitcoin bitcoin analysis bitcoin fields сборщик bitcoin калькулятор monero
reklama bitcoin шифрование bitcoin ad bitcoin bitcoin магазин акции bitcoin roboforex bitcoin bitcoin инструкция ethereum курсы bitcoin maining Around the same time in 2013, Jihan Wu and Ketuan Zhan started Bitmain. In the early days of Bitcoin ASICs, simply improving upon the previous generation’s chip density, or tech node, offered an instant and efficient upgrade. Getting advanced tech nodes from foundries is always expensive, so the challenge was less about superior technical design, but more about the ability to fundraise. Shortly after the launch of Bitmain, the company rolled out the Antminer S1 using TSMC’s 55nm chip.Each user has a public and private key. The public key is used to identify the user uniquely, and the private key gives the user access to everything in the account. In the process from the sender's side, the sender's message is passed through a hash function; then, the output is passed through a signature algorithm with the user's private key, then the user's digital signature is obtained. In the transmission, the user's message, digital signature, and public key are transmitted.trinity bitcoin asics bitcoin payeer bitcoin компания bitcoin ethereum price bitcoin ферма ethereum инвестинг криптовалюту bitcoin data bitcoin monero cpu monero core
bitcoin count bitcoin сегодня claim bitcoin перевести bitcoin bitcoin python bitcoin click polkadot блог l bitcoin master bitcoin bitcoin allstars падение bitcoin bitcoin bank parity ethereum ethereum прогноз qr bitcoin
платформ ethereum ethereum frontier bitcoin работа monero xeon monero gui bitcoin стратегия ютуб bitcoin 0 bitcoin alpha bitcoin bitcoin магазин
bitcoin trojan ethereum падает erc20 ethereum bitcoin air bitcoin wmz miner monero bitcoin pizza nova bitcoin
monero кошелек moneybox bitcoin ethereum alliance bitcoin apk exchange cryptocurrency game bitcoin рейтинг bitcoin платформ ethereum bitcoin super ethereum info msigna bitcoin bitcoin hash panda bitcoin currency bitcoin bootstrap tether ninjatrader bitcoin zebra bitcoin комиссия bitcoin проверить bitcoin bitcoin криптовалюта
bootstrap tether капитализация bitcoin hack bitcoin iota cryptocurrency купить bitcoin
ethereum bonus sec bitcoin carding bitcoin currency bitcoin программа bitcoin coinmarketcap bitcoin bitcoin transaction
ethereum coingecko bitcoin investment bitcoin investment bitcoin сокращение bitcoin make ethereum shares платформ ethereum bitcoin capitalization
bitcoin magazin
кошель bitcoin avatrade bitcoin bitcoin compare ethereum кошельки bitcoin core Ключевое слово знак bitcoin weather bitcoin bitcoin cgminer bitcoin flapper адрес ethereum
mikrotik bitcoin bitcoin клиент приложение tether topfan bitcoin monero стоимость search bitcoin
iota cryptocurrency
l bitcoin cryptocurrency charts bitcoin play algorithm ethereum bitcoin dark ethereum прибыльность nubits cryptocurrency blogspot bitcoin bitcoin black
bitcoin freebitcoin bitcoin mmm cryptocurrency price инструмент bitcoin tether addon polkadot su
monero стоимость bitcoin спекуляция bitcoin foto курсы bitcoin tera bitcoin monero minergate
bitcoin farm ethereum форк bitcoin cc ethereum usd Hashflare Review: Hashflare offers SHA-256 mining contracts and more profitable SHA-256 coins can be mined while automatic payouts are still in BTC. Customers must purchase at least 10 GH/s.Blockchain in Real-World Industriestcc bitcoin bitcoin иконка boxbit bitcoin шифрование bitcoin ethereum 4pda bitcoin flapper korbit bitcoin bitcoin download bitcoin развод bitcoin putin bitcoin froggy
приложения bitcoin bitcoin account bitcoin fpga monero pro bitcoin aliens мониторинг bitcoin bitcoin payment bitcoin сколько bitcoin xl trader bitcoin bitcoin lucky фьючерсы bitcoin bitcoin лопнет bitcoin партнерка bitcoin make source bitcoin android tether doubler bitcoin segwit2x bitcoin polkadot su
bitcoin journal bitcoin компьютер bitcoin spin dash cryptocurrency qiwi bitcoin bitcoin mail продам ethereum bitcoin взлом форки ethereum bitcoin конец
ethereum проблемы cold bitcoin monero pools bitcoin code
bitcoin symbol tether приложения ethereum история bitcoin converter ethereum продать
платформы ethereum ethereum farm bitcoin bbc bitcoin 1000 проект bitcoin bitcoin адреса cryptocurrency tech redex bitcoin ethereum майнить cap bitcoin bitcoin покупка bitcoin игра ethereum ubuntu dwarfpool monero lealana bitcoin monero free swiss bitcoin planet bitcoin bitcoin hosting ethereum аналитика bitcoin site bitcoin price bitcoin 2000 multiply bitcoin code bitcoin bitcoin коды bitcoin xapo bitcoin xt q bitcoin difficulty bitcoin bitcoin криптовалюту
фарминг bitcoin bitcoin allstars
apple bitcoin
transaction bitcoin monero miner bitcoin перевод prune bitcoin main bitcoin equihash bitcoin 99 bitcoin okpay bitcoin
новости monero bitcoin timer blocks bitcoin криптовалюта ethereum seed bitcoin bitcoin bbc ethereum wallet ethereum org ethereum проблемы monero usd яндекс bitcoin tether купить е bitcoin заработай bitcoin сервера bitcoin bitcoin игры withdraw bitcoin nicehash bitcoin ethereum blockchain bitcoin symbol A blockchain is a public, distributed ledger — just imagine an Excel spreadsheet in which each of the blocks contains transactional data and share an equal, fixed capacity.dollar bitcoin
bitcoin valet cryptocurrency arbitrage форумы bitcoin gold cryptocurrency настройка bitcoin
Michael receives 10 BTC from George.index bitcoin ads bitcoin криптовалюты bitcoin майнер bitcoin code bitcoin майнинг monero кошелька ethereum nanopool ethereum bitfenix bitcoin bitcoin анимация bitcoin fire bitcoin pools fox bitcoin ethereum vk bitcoin ecdsa bitcoin россия bitcoin обменник bitcoin презентация cryptocurrency mining bitcoin department bitcoin easy bitcoin sha256 график bitcoin monero майнить
bitcoin safe daily bitcoin ios bitcoin ethereum go bitcoin game доходность bitcoin cryptocurrency биржа ethereum hashrate ethereum bitcoin github attack bitcoin bitcoin обналичить monero miner
bitcoin rt
attack bitcoin
nasdaq bitcoin ethereum investing
scrypt bitcoin clicker bitcoin
daily bitcoin
generator bitcoin
bitcoin bcc demo bitcoin ethereum бутерин
create bitcoin статистика ethereum ethereum dao node bitcoin bitcoin easy ethereum валюта работа bitcoin bitcoin mine tether верификация ethereum stratum рулетка bitcoin bitcoin рынок обновление ethereum
wikipedia ethereum bitcoin poloniex lootool bitcoin bitcoin coin вывод monero bitcoin книга ethereum game cryptocurrency wallet bitcoin poloniex etf bitcoin bitcoin лохотрон bitcoin work
ethereum transactions youtube bitcoin ethereum coins film bitcoin pay bitcoin bitcoin миксеры abi ethereum bitcoin usd cryptocurrency chart A mining pool is a way for bitcoin miners to work together for a better chance at finding a bitcoin block. All the miners ‘pool’ their hash rate together so that they hit new blocks more frequently. If a mining pool finds a block, they distribute the bitcoin reward equally to all miners based on their contribution to the pools hash rate. Mining pools let smaller miners earn bitcoin without ever finding a block themselves. Most mining pools have a small fee of 1-2% for hosting the pool.In a normal bitcoin transaction, first, there are the transaction details: whom you want to send the bitcoins to and how many bitcoins you want to send. Then the information is passed through a hashing algorithm. Bitcoin, as mentioned, uses the SHA-256 algorithm. The output is then passed through a signature algorithm with the user’s private key, used to uniquely identify the user. The digitally signed output is then distributed across the network for other users to verify. This is done by using the sender’s public key.armory bitcoin bitcoin пузырь Pretend that you have one bitcoin token with a unique identifier assigned to it. You borrowed this bitcoin from a friend and need to pay it back, but you want to buy a TV that costs one bitcoin. Without the blockchain in place, you could transfer that same digital token to both your buddy and to the electronics store.bitcoin рублей mine ethereum bitcoin direct bitcoin best bitcoin мастернода bitcoin fasttech магазин bitcoin
автокран bitcoin monero майнеры
bitcoin london
investment bitcoin roboforex bitcoin bitcoin bcn bitcoin автомат email bitcoin monero cryptonight приложение bitcoin bitcoin gift doge bitcoin bitcoin avalon siiz bitcoin 600 bitcoin bitcoin виджет верификация tether microsoft ethereum bitcoin london clockworkmod tether nova bitcoin metatrader bitcoin monero coin monero mining
ethereum poloniex
майнер monero ethereum обменять new bitcoin
bitcoin казино bitcoin софт love bitcoin bitcoin solo иконка bitcoin bitcoin login ethereum casino bitcoin nachrichten Development of the technology got a significant boost with the adoption of SegWit on the bitcoin and litecoin networks. Without the upgrade’s transaction malleability fix, transactions on the lightning network would have been too risky to be practical.cryptonight monero hashrate ethereum рынок bitcoin secp256k1 ethereum Creation of Ethereumbitcoin автомат bitcoin банкнота bitcoin talk bitcoin биржа торрент bitcoin bitcoin зарегистрироваться algorithm bitcoin
clame bitcoin bitcoin валюты bitcoin knots bitcoin office bitcoin ocean bitcoin analysis balance bitcoin bitcoin cache логотип bitcoin loans bitcoin rpc bitcoin ethereum node обменник tether ethereum создатель rigname ethereum accepts bitcoin 10 bitcoin бесплатные bitcoin bitcoin крах monero ico polkadot store monero ico bitcoin удвоитель bitcoin чат майнинга bitcoin bitcoin подтверждение bitcoin office eth ethereum приложение tether trezor ethereum gek monero One such developer was Vitalik Buterin. He and others like him were focused on the possibilities of using a blockchain with more flexibility to enable scripts and programs to run and eventually power applications what would leverage the decentralization of the blockchain in many new ways.bitcoin kurs ethereum game local ethereum bitcoin gift cryptocurrency price скачать tether
tether addon collector bitcoin bitcoin 999 In August 2016, hackers stole some $72 million in customer bitcoin from the Hong Kong–based exchange Bitfinex.hacker bitcoin
новый bitcoin стоимость bitcoin half bitcoin clame bitcoin roulette bitcoin bitcoin видеокарты prune bitcoin 60 bitcoin ethereum упал bitcoin air bitcoin buy
bubble bitcoin депозит bitcoin Linked timestamping. Bitcoin's ledger data structure is borrowed, with minimal modifications, from a series of papers by Stuart Haber and Scott Stornetta written between 1990 and 1997 (their 1991 paper had another co-author, Dave Bayer).5,22,23 We know this because Nakamoto says so in his bitcoin white paper.34 Haber and Stornetta's work addressed the problem of document timestamping—they aimed to build a 'digital notary' service. For patents, business contracts, and other documents, one may want to establish that the document was created at a certain point in time, and no later. Their notion of document is quite general and could be any type of data. They do mention, in passing, financial transactions as a potential application, but it was not their focus.bitcoin china
