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Blockchain
An SI Board Since December 2017
Posts SubjectMarks Bans Symbol
714 116 1 ETH
Emcee:  Glenn Petersen Type:  Moderated
A blockchain is a digitized, decentralized and globally distributed public ledger of transactions that is constantly growing as completed blocks (the most recent transactions) are recorded and added to it in chronological order. The Harvard Business Review has described it as “an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way.” A blockchain is typically managed by a peer-to-peer network collectively adhering to a protocol for validating new blocks. Once recorded, the data in any given block cannot be altered retroactively without the alteration of subsequent blocks, which requires collusion of all of the other blocks in a chain. All of this happens in an open and transparent environment.

Or, more simply:

“Blockchain is a record-keeping technology which provides a continually growing and immutable list of records. Each of these records (called blocks) are linked and secured using cryptography. Blocks typically contain a timestamp, transaction data, and identifiers (hash pointers) to prove its link to a previous block. These hash pointers validate the block’s place, which makes the manipulation or modification inherently difficult…This means blockchain technology is used to record transactions between parties, on a common ledger, in a verifiable and permanent way. It is considered distributed because the ledger is not held in one place – it is instead held in many places and each transaction must be verified by the consensus of parties involved in a given network…Since the ledger is not held by a central authority or held in one place, it is considered decentralized.” --- Andrew J. Chapin, Co-founder and CEO of Benja

The first blockchain was conceptualized in 2008 by an anonymous person or group known as Satoshi Nakamoto and implemented in 2009 as the core component of the technology underlying bitcoin, where it now serves as the public ledger for almost all cryptocurrency transactions.

Blockchain’s cryptocurrency applications are only the tip of the iceberg of its potential applications. Some observers believe that the widespread adoption of the blockchain technology could potentially be more disruptive than the introduction of the Internet. Some blockchain boosters say that the development of blockchain rivals, in significance, the introduction of double-entry bookkeeping in Renaissance Italy. Blockchain in this context is triple-entry bookkeeping where the third entry is a verifiable cryptographic receipt of every transaction.

Many businesses, from energy to healthcare to food are already exploring and implementing blockchains in an effort to trim costs\ and secure and share information more efficiently. They do so knowing that there very survival may be at stake.

In the summer of 2016, Dan Tapscott, the Co-Founder and Executive Director of the Blockchain Research Institute, delivered a TED Talk on the “Blockchain Revolution.”

How the blockchain is changing money and business



Corporations and individuals can create private “permissioned” blockchains which use an access control layer to govern who has access to the network. In contract to public blockchain networks, the users on private networks are vetted by the network owner.

This board has been created to discuss the underlying technology of blockchain, the potential and actual usage of the technology and, most importantly, the investment opportunities surrounding blockchain. Inevitably, these will include the cryptocurrencies and some casino stock plays that will flare out and crash.

"Software is eating the world" - Marc Andreessen

External resources

Cryptocurrency market caps: coinmarketcap.com

Initial coin offerings (ICOs) market caps: coinmarketcap.com

Satoshi Nakamoto whitepaper (Bitcoin: A Peer-to-Peer Electronic Cash System): bitcoin.org

Vitalik Buterin whitepaper (A Next Generation Smart Contract & Decentralized Application Platform): the-blockchain.com

Blockchain Technology Overview (Draft NISTIR 8202): csrc.nist.gov

Beyond the Bitcoin Bubble (New York Times): Message 31439473

Bitcoin Mania (New York Review of Books): Message 31432686

Wikipedia entry: en.wikipedia.org

Coindesk: coindesk.com

Cointelegraph: cointelegraph.com

Related SI boards

Bitcoin: Subject 59173

GBTC: Bitcoin Investment Trust (not an ETF): Subject 59732

IOTA (which does not use a traditional blockchain technology): Subject 59917

Binance (BNB): Subject 59928

Wagerr (WGR): Subject 59927


Fintech (Cryptocurrencies, ICOs etc.): Subject 59550

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714cnbc.com Amazon Web Services launches 'blockchLhn5-7 hours ago
713For any of you actually in crypto, this series of tweets is worth reading IMHO: w0z3yesterday
712 Security Token Academy presents an expert panel discussion on the security tokMikeY-Thursday
711As a result of this ghoulish PR exercise, Savedroid has in fact managed to bringGlenn Petersen-Thursday
710A rather “unique” way to pointing out the risk of ICO investing ... Savedroid Ikidl1Thursday
709Basis, a year-old startup that’s building a price-stable cryptocurrency, just raGlenn Petersen1Wednesday
708With this browser, ads can’t steal your attention — they have to pay you for it FUBHO1Wednesday
707Coinbase buys Earn.com and makes CEO Balaji Srinivasan its first CTO Jon RusselGlenn Petersen1Monday
706[youtube video] RoadtoRoota Published on Apr 16, 2018 It is so important to conroguedolphin-Monday
705Samsung jumps on blockchain bandwagon to manage its supply chain businesstimes.Elroy2Monday
704Search Giant Baidu Unveils Blockchain Photo Wolfie Zhao CoinDesk Apr 12, 2018 aGlenn Petersen-Monday
703 Bringing Blockchain to the Coffee Cup Colorado shop tries to rewrite the javGlenn Petersen-Sunday
702Blockchain:The new economy by Jason Potts, RMIT university Australia The currenClaude Cormier-Sunday
701Inside the Jordan refugee camp that runs on blockchain Syrian refugees could reGlenn Petersen-Sunday
700 How Blockchain Could Displace Facebook By Tiernan Ray BGlenn Petersen-last Saturday
699 Bitcoin is eating Quebec A Canadian hydropower operation put out the welcomePogeu Mahone1April 12
698Nice illustration!Claude Cormier-April 12
697But it will be a long Battle before the coming blockchains DAPPs are used massivGlenn Petersen2April 11
696I don't understand your point. Who is saying that?Claude Cormier-April 10
695Saying decentralized is not definitive.. It is like a Catholic accepting the TriThe Black Swan-April 10
694Thanks, I'll remember DApp. Perhaps there will be a DApp e-mail service, orbenwood-April 9
693IBM and other partners are to legally register a company, from start to finish, Claude Cormier-April 9
692How Blockchain Is Threatening to Kill the Traditional Utility By Chris Martin Glenn Petersen1April 9
691Hum, I am not aware that there is a "my number" with Ufile. Don't Claude Cormier-April 9
690The filing itself with TurboTax is safe, that is, through an encrypted channel. benwood-April 9
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