Israel Godwin
@israelgodwin
2 years ago

The seeds of what would become Web3 were planted in 1991, when scientists W. Scott Stornetta and Stuart Haber launched the first blockchain — a project to time-stamp digital documents. But the idea didn’t really take root until 2009, when Bitcoin was launched in the wake of the financial crisis (and at least partially in response to it) by the pseudonymous inventor Satoshi Nakamoto. It and its undergirding blockchain technology work like this: Ownership of the cryptocurrency is tracked on a shared public ledger, and when one user wants to make a transfer, “miners” process the transaction by solving a complex math problem, adding a new “block” of data to the chain and earning newly created bitcoin for their efforts. While the Bitcoin chain is used just for currency, newer blockchains offer other options. Ethereum, which launched in 2015, is both a cryptocurrency and a platform that can be used to build other cryptocurrencies and blockchain projects. Gavin Wood, one of its cofounders, described Ethereum as “one computer for the entire planet,” with computing power distributed across the globe and controlled nowhere. Now, after more than a decade, proponents of a blockchain-based web are proclaiming that a new era — Web3 — has dawned.

Put very simply, Web3 is an extension of cryptocurrency, using blockchain in new ways to new ends. A blockchain can store the number of tokens in a wallet, the terms of a self-executing contract, or the code for a decentralized app (dApp). Not all blockchains work the same way, but in general, coins are used as incentives for miners to process transactions. On “proof of work” chains like Bitcoin, solving the complex math problems necessary to process transactions is energy-intensive by design. On a “proof of stake” chain, which are newer but increasingly common, processing transactions simply requires that the verifiers with a stake in the chain agree that a transaction is legit — a process that’s significantly more efficient. In both cases, transaction data is public, though users’ wallets are identified only by a cryptographically generated address. Blockchains are “write only,” which means you can add data to them but can’t delete it.

Web3 and cryptocurrencies run on what are called “permissionless” blockchains, which have no centralized control and don’t require users to trust — or even know anything about — other users to do business with them. This is mostly what people are talking about when they say blockchain. “Web3 is the internet owned by the builders and users, orchestrated with tokens,” says Chris Dixon, a partner at the venture capital firm a16z and one of Web3’s foremost advocates and investors, borrowing the definition from Web3 adviser Packy McCormick. This is a big deal because it changes a foundational dynamic of today’s web, in which companies squeeze users for every bit of data they can. Tokens and shared ownership, Dixon says, fix “the core problem of centralized networks, where the value is accumulated by one company, and the company ends up fighting its own users and partners.”