A timeline of the Web and Web3

The first message is sent over ARPANET, from Leonard Kleinrock's lab at UCLA to the Stanford Research Institute. The intended word was "login," but the system crashed after two letters, so the first thing ever transmitted across the network's ancestor was simply "lo." This packet-switched military research network is the direct technical ancestor of the Internet.

Vinton Cerf and Robert Kahn publish "A Protocol for Packet Network Intercommunication," describing what becomes TCP/IP. It is the breakthrough that lets different, incompatible networks interconnect into a single "network of networks" — the conceptual core of the Internet.

ARPANET formally switches over to TCP/IP. This "flag day" is the moment the Internet, as a working system built on the protocols we still use, begins operating.

Tim Berners-Lee submits "Information Management: A Proposal" at CERN, sketching a global hypertext system he will name the World Wide Web. His manager scrawled "Vague but exciting" on the cover. This proposal lays out the three foundations of the Web: HTML, URLs, and HTTP.

The World Wide Web becomes a public service on the Internet, with the first website going live. This marks the start of the "read-only" Web 1.0 era of largely static pages — the Web most people first encountered.

Cryptographers Stuart Haber and W. Scott Stornetta publish their work on cryptographically secure timestamping of digital documents, using linked hashes so records cannot be altered after the fact. This "chain of blocks" idea is a direct intellectual ancestor of the blockchain; Satoshi Nakamoto's Bitcoin paper later cites their work.

Eric Hughes publishes "A Cypherpunk's Manifesto," opening "Privacy is necessary for an open society in the electronic age" and coining the motto "Cypherpunks write code." It crystallizes the privacy-and-cryptography movement whose ideas — anonymity, distrust of central authority, code as a tool of freedom — run straight through to Bitcoin and Web3. (Timothy May's earlier "Crypto Anarchist Manifesto," written 1988 and circulated 1992, is the movement's other founding text.)

Designer Darcy DiNucci coins the term "Web 2.0" in her article "Fragmented Future," predicting the static Web is "only an embryo of the Web to come." The term will later be repurposed and popularized to describe a very different idea.

The dot-com bubble bursts, wiping out a wave of speculative Internet companies. The crash clears the ground for the survivors — and the search to define what those survivors had in common helps give "Web 2.0" its modern meaning.

Berners-Lee, James Hendler, and Ora Lassila publish "The Semantic Web" in Scientific American, envisioning a Web of machine-readable meaning. This is the original "Web 3.0" — a distinct lineage from the later blockchain "Web3," and a frequent source of confusion between the two.

O'Reilly Media and MediaLive launch the first Web 2.0 Conference, where the phrase (proposed in brainstorming by Dale Dougherty) is popularized to describe the post-crash generation of companies, framed around the idea of the "Web as Platform."

The platform era takes hold: social networks, user-generated content, and "the Web as platform" reshape the Internet around a handful of dominant companies. This read–write Web brings participation but also concentration — the centralization and data-harvesting that critics (later, Shoshana Zuboff's "surveillance capitalism") identify as Web 2.0's defining discontents, and that Web3 positions itself against.

Tim O'Reilly publishes "What Is Web 2.0," the canonical essay defining the platform Web: software as a service that improves the more people use it, harnessing collective intelligence and network effects. One of its design patterns, "Data is the Next Intel Inside," foreshadows the data-as-asset economy.

The Bitcoin whitepaper, "Bitcoin: A Peer-to-Peer Electronic Cash System," is circulated to a cryptography mailing list under the pseudonym Satoshi Nakamoto. It proposes electronic payments "based on cryptographic proof instead of trust," solving the double-spending problem without a trusted third party. Nakamoto's true identity remains unknown and disputed.

The Bitcoin genesis block (block 0) is mined. Its coinbase embeds the headline "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks" — both a timestamp and a pointed comment on the financial crisis Bitcoin was reacting against. This is the operational birth of the first working blockchain.

Vitalik Buterin's Ethereum whitepaper proposes a blockchain with a built-in Turing-complete programming language, enabling general-purpose "smart contracts" rather than just payments. This generalization — a programmable "world computer" — is what makes most of later Web3 (DeFi, NFTs, DAOs) technically possible.

Ethereum co-founder Gavin Wood publishes "ÐApps: What Web 3.0 Looks Like," coining the modern, blockchain-centric meaning of "Web3." Writing after the Snowden revelations, he argues that "entrusting our information to organisations... is a fundamentally broken model" and calls for a "zero-trust" web. The spelling "Web3" (no decimal) later distinguishes this vision from Berners-Lee's Semantic "Web 3.0."

Ethereum's first live network, "Frontier," launches, loading a genesis block that includes allocations from the 2014 crowdsale (which raised roughly $18 million). The "world computer" goes live.

An attacker begins draining "The DAO" — a high-profile investor-governed venture fund built on Ethereum — via a reentrancy bug, ultimately taking around 3.6 million ETH (roughly $50–70 million at the time; dollar figures vary with the ETH price used). It is the first crisis to test whether a blockchain's rules are truly immutable.

At block 1,920,000, Ethereum executes a contentious hard fork to reverse the DAO theft, with about 85% of miners following. The minority who reject the fork as a violation of immutability keep the original chain alive as Ethereum Classic, asserting "code is law." This split is a foundational, still-debated dispute about what a blockchain is for.

The Initial Coin Offering (ICO) boom: projects raise billions by selling new tokens, often on little more than a whitepaper. The mania funds real building but also rampant fraud, and it sets off years of regulatory reckoning over whether tokens are securities. (Gavin Wood also founds the Web3 Foundation this year.)

SEC official William Hinman says that, given how decentralized Ether has become, current sales of it are not securities transactions — popularizing the influential "sufficiently decentralized" concept that shapes the token-regulation debate for years.

"DeFi summer": decentralized finance — lending, trading, and yield farming run entirely by smart contracts — explodes in usage. It is the first large-scale demonstration of blockchains doing complex finance without intermediaries, and it kicks off the boom that follows.

Beeple's "Everydays: The First 5000 Days" sells at Christie's for $69.3 million (including premium), the first purely digital NFT auctioned by a major house. The sale propels NFTs into global mainstream awareness and ignites the 2021 NFT boom — later tempered by evidence that much NFT trading volume was wash trading.

The bull market peaks: total crypto market capitalization tops roughly $2.9 trillion and DeFi's total value locked reaches around $180 billion (with some trackers reporting more). It is the high-water mark before the 2022 collapse.

Facebook renames itself Meta and pivots toward "the metaverse," betting billions on immersive virtual worlds. The move briefly fuses Web3, NFT, and metaverse hype — and its subsequent retreat becomes a cautionary tale about overreach.

The Terra/Luna collapse: the algorithmic stablecoin UST loses its dollar peg and its sister token LUNA enters a "death spiral," erasing roughly $40 billion in days. It triggers a contagion that takes down Three Arrows Capital, Celsius, and Voyager, and helps cut total crypto market cap from about $2.9 trillion to roughly $1 trillion.

The Ronin bridge hack steals about $625 million (later attributed to North Korea's Lazarus Group), one of the largest crypto thefts ever; the Wormhole bridge had been exploited for about $325 million weeks earlier (February). Cross-chain bridges prove to be one of Web3's most dangerous weak points.

"The Merge": Ethereum switches from energy-hungry proof-of-work to proof-of-stake, cutting its energy use by an estimated ~99.95%. It is among the largest single decarbonization events in tech and shows that a blockchain's energy cost is a design choice, not a law of nature.

FTX, once a top crypto exchange, collapses into bankruptcy along with 100+ affiliated entities, exposing an roughly $8 billion hole in customer funds. The new CEO calls it a "complete failure of corporate controls"; founder Sam Bankman-Fried is later convicted of fraud. It becomes the defining scandal of the crypto bust and a catalyst for tougher regulation.

The EU adopts MiCA (Markets in Crypto-Assets Regulation), the world's first comprehensive cross-border crypto framework. It enters into force in 2023 and phases in through 2024, setting a global benchmark for how crypto might be regulated. (Earlier that year, U.S. courts issued split rulings in SEC v. Ripple and the SEC charged Coinbase, sharpening the "are tokens securities?" fight.)

The SEC approves the first U.S. spot Bitcoin ETFs. BlackRock's IBIT becomes one of the fastest-growing ETFs ever, channeling tens of billions of institutional dollars into crypto and marking its entry into mainstream finance. (Spot Ether ETFs follow in July 2024.)

BlackRock launches BUIDL, a tokenized U.S. Treasury fund, on Ethereum. It surpasses $1 billion in assets within a year and becomes the largest tokenized money-market fund on public blockchains — a flagship example of "real-world asset" (RWA) tokenization moving from theory to practice.

The Bybit hack steals roughly $1.5 billion in ETH, the largest crypto heist to date, again attributed to North Korea's Lazarus Group. It underscores that security and the "human factor" remain Web3's persistent unsolved problem even as institutions pile in.

The U.S. enacts the GENIUS Act, its first major federal crypto law, creating a framework for payment stablecoins (requiring 1:1 reserves and AML obligations). Together with the House-passed CLARITY Act on market structure, it signals a 2025–2026 trajectory toward formally folding crypto into mainstream finance.

Maturation and open questions. Stablecoins surge past $300 billion in market value; tokenized real-world assets grow toward $25–31 billion on-chain; AI-agent payment rails (such as Coinbase's x402) emerge. Yet the core tensions remain unresolved: re-centralization in practice, a gap between ~220 million active addresses and perhaps only ~30–60 million real users, and the absence of a clear non-financial "killer app." The honest assessment is a technology with real but narrow, mostly financial, adoption whose broadest promises are still unproven.

A note on contested and approximate dates

• Satoshi Nakamoto's identity is unknown and disputed; only the document dates (whitepaper October 31, 2008; genesis block January 3, 2009) are firm.
• The Ethereum whitepaper circulated in late 2013 / early 2014; "2014" is the conventional citation.
• The DAO loss figure (3.6 million ETH) translates to a dollar range ($50–70 million) that varies with the ETH price referenced.
• The Merge's energy reduction (~99.95%) is an estimate; independent post-Merge measurements report figures as high as ~99.99%.
• Bitcoin energy figures throughout are dated point estimates within wide ranges, not fixed constants.
• DeFi "total value locked" peaks differ across trackers (roughly $180 billion to $255 billion for November 2021) because each uses different inclusion rules.
• The DAO hard fork's legitimacy is not a contested date but a contested meaning — the foundational dispute that split Ethereum from Ethereum Classic.