# Timeline

Dated, sourced events, the estate's launches and Bitcoin's own milestones.

URL: https://blockspace.wiki/timeline/

Every entry has a date and a source. Bitcoin's own milestones are given at the height Blockspace Holdings' BTI records for them, dated by that block's header time (UTC) as https://explore.block.space reports it.

- 2009-01-03: The genesis block, block 0, is mined. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs)
- 2012-11-28: The first halving, at block 210,000: the block subsidy falls from 50 to 25 BTC. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs)
- 2013-03-29: The first [OP_RETURN](https://blockspace.wiki/glossary/op-return/) output on Bitcoin appears at block 228,596, a year before Bitcoin Core 0.9 made it standard. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs)
- 2013-07-31: Mastercoin, later Omni, opens its Exodus fundraiser at block 249,498. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs)
- 2014-01-02: [Counterparty](https://blockspace.wiki/glossary/counterparty/)'s proof-of-burn begins at block 278,310. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs)
- 2016-07-09: The second halving, at block 420,000. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs)
- 2017-08-24: SegWit activates at block 481,824, and with it the [witness discount](/concepts/witness-discount/). (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs, Blockspace Value Theory)
- 2020-05-11: The third halving, at block 630,000. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs)
- 2021-11-14: [Taproot](https://blockspace.wiki/glossary/taproot/) activates at block 709,632, which makes the inscription envelope possible. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs)
- 2022-12-14: Inscription #0 is made at block 767,430, the first ordinal [inscription](https://blockspace.wiki/glossary/inscription/). (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs, block.space protocols API)
- 2023-01-31: The first [cursed inscription](https://blockspace.wiki/glossary/cursed-inscription/), inscription -1, appears at block 774,411. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs)
- 2023-03-08: BRC-20 begins with the ordi deploy inscription at block 779,832. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs, block.space protocols API)
- 2023-04-08: Inscription #1,000,000 is made, at block 784,528. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs)
- 2023-05-03: KEVIN, the first SRC-20 token, is deployed at block 788,041. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs, block.space protocols API)
- 2023-09-17: Atomicals and [ARC-20](https://blockspace.wiki/glossary/arc-20/) begin at block 808,080. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs)
- 2024-01-06: ord's Jubilee at block 824,544, when cursed inscriptions are blessed. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs)
- 2024-04-20: The fourth halving and the launch of Runes, at block 840,000. Rune #0 is UNCOMMON•GOODS. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs, Blockspace Value Theory, block.space protocols API)
- 2024-11-27: The Bitbar minting app behind [mintbitbars.xyz](/projects/mintbitbars.xyz/) is first written. (source: Blockspace Holdings records, The mintbitbars.xyz checkout (antron3000/Bitbar-Minting-App): index.html, server/, minter/)
- 2025-01-20: Alkanes activates at block 880,000; its first message runs four blocks later, at 880,004. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs, block.space protocols API)
- 2025-06-20: Counterparty v11 taproot envelopes become mandatory at block 902,000. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs, Blockspace Value Theory)
- 2025-06-20: Bitcoin Counters begins: counter #0 (XDUALS) at block 902,005. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs, Bitcoin Counters v3, indexer and wallet: README (BitcoinCounters/counters))
- 2025-07-14: Inscription #100,000,000 is made, at block 905,492. (source: Blockspace Holdings records, explore.block.space REST API, read-only GETs)
- 2026-06-25: Work begins on the Bitcoin Counters indexer and wallet, the index behind [counters.gallery](/projects/counters.gallery/). (source: Blockspace Holdings records, Bitcoin Counters v3, indexer and wallet: README (BitcoinCounters/counters))
- 2026-08-02: The Meter becomes block.space's main page, with its own explorer of transactions and bytes beside it. (source: Blockspace Holdings records)
- 2026-08-02: Blockspace Value Theory, the Shared Claim Axiom and the BTP and BYTES drafts get a version history. (source: Blockspace Holdings records, Blockspace Value Theory)
- 2026-08-06: [BTI](https://blockspace.wiki/glossary/bti/) is designed from first principles (draft 0.2), with Ruleset v1 and the [three books](/concepts/the-three-books/), A, B and C. (source: Blockspace Holdings records)
- 2026-08-10: BTI is rebuilt: the T1 and T2 engine, 22 adapters and the token table, with one adapter per metaprotocol indexer. (source: Blockspace Holdings records)
- 2026-08-11: block.space runs on the rebuilt BTI. (source: Blockspace Holdings records)
- 2026-09-07: Work begins on [counters.fun](/projects/counters.fun/), Counters with XCP liquidity pools. (source: Blockspace Holdings records, counters.fun README (BitcoinCounters/counters.fun))
- 2026-09-23: Work begins on the [degent.club](/projects/degent.club/) site and mint. (source: Blockspace Holdings records)
- 2026-10-18: block.space publishes [the leaderboard](https://blockspace.wiki/glossary/the-leaderboard/): every address ranked by the blockspace its tokens are backed by. (source: Blockspace Holdings records, block.space leaderboard API)
- 2026-10-18: block.space publishes /largest-inscriptions, the largest inscriptions in order. (source: Blockspace Holdings records)
- 2026-10-18: block.space publishes /heaviest-tokens, the heaviest tokens in order, family by family. (source: Blockspace Holdings records)
- 2026-10-19: [The appendix](https://blockspace.wiki/glossary/the-appendix/) of holders is filled: 125,438,419 sats and 4,460,161 addresses, with 85.7 % of Book A on addresses; from then on it is updated block by block. (source: Blockspace Holdings records)
- 2026-10-19: /largest-inscriptions ranks each inscription, and /heaviest-tokens ranks tokens 100,000 deep per protocol. (source: Blockspace Holdings records)
- 2026-10-19: The three rankings share one frame, and block.space publishes its rankings docs. (source: Blockspace Holdings records, block.space docs: rankings)
- 2026-10-19: block.space adopts the [five-colour family key](https://blockspace.wiki/glossary/five-colour-family-key/): five families, then Other. (source: Blockspace Holdings records)
- 2026-10-19: The sat family is named [Ordinal Sats](https://blockspace.wiki/glossary/ordinal-sats/). (source: Blockspace Holdings records)
- 2026-10-19: /largest-inscriptions becomes a grid of squares, each showing the inscription's own content. (source: Blockspace Holdings records)
- 2026-10-19: block.space/projects lists every project, one per domain. (source: Blockspace Holdings records, The project list at block.space/projects)
- 2026-10-19: [blockspace.holdings](/projects/blockspace.holdings/) is live at its own address. (source: The project list at block.space/projects, Blockspace Holdings records)
- 2026-10-19: [degent.club](/projects/degent.club/) is live again at its own address. (source: The project list at block.space/projects)
- 2026-10-19: [spaceblocks.art](/projects/spaceblocks.art/) is live: one image that fills a 1 MB block. (source: The project list at block.space/projects, Blockspace Holdings records)
- 2026-10-19: [blockspace.news](/projects/blockspace.news/) is live, with a daily edition in numbers from block.space. (source: The project list at block.space/projects, Blockspace Holdings records)
- 2026-10-19: [blockspace.markets](/projects/blockspace.markets/) is live: blockspace for sale, priced per kilobyte. (source: The project list at block.space/projects, Blockspace Holdings records)
- 2026-10-19: [mintbitbars.xyz](/projects/mintbitbars.xyz/) is live. (source: The project list at block.space/projects, Blockspace Holdings records)
- 2026-10-20: [blockspacelabs.com](/projects/blockspacelabs.com/) goes live with its research cards. (source: The project list at block.space/projects, Blockspace Holdings records, The blockspacelabs.com page (index.html))
- 2026-10-20: [blockspace.to](/projects/blockspace.to/), the spent-sats ord explorer, goes live. (source: The project list at block.space/projects, The blockspacelabs.com page (index.html))
- 2026-10-20: [litepedia.space](/projects/litepedia.space/) answers at its own address, Coming soon. (source: The project list at block.space/projects, Blockspace Holdings records)
- 2026-10-20: [Scribbit](/projects/scribb.it/) gets its descriptive site; scribb.it is Coming soon. (source: Blockspace Holdings records, The project list at block.space/projects)
- 2026-10-20: block.space publishes /collections: NFT collections on Bitcoin, ranked by blockspace. (source: Blockspace Holdings records)
- 2026-10-20: The leaderboard's bars and key run largest family first. (source: Blockspace Holdings records)
- 2026-10-20: blockspace.wiki is built. (source: Blockspace Holdings records, blockspace.wiki README)

Sources:

- The project list at block.space/projects · https://block.space/projects
- Blockspace Holdings records
- explore.block.space REST API, read-only GETs · https://explore.block.space/api/blocks/tip/height
- Blockspace Value Theory · https://block.space/docs/bvt
- block.space protocols API · https://block.space/api/protocols
- Bitcoin Counters v3, indexer and wallet: README (BitcoinCounters/counters) · https://github.com/BitcoinCounters/counters
- The mintbitbars.xyz checkout (antron3000/Bitbar-Minting-App): index.html, server/, minter/ · https://github.com/antron3000/Bitbar-Minting-App
- counters.fun README (BitcoinCounters/counters.fun) · https://github.com/BitcoinCounters/counters.fun
- block.space leaderboard API · https://block.space/api/leaderboard
- block.space docs: rankings · https://block.space/docs/rankings
- The blockspacelabs.com page (index.html) · https://blockspacelabs.com
- blockspace.wiki README · https://blockspace.wiki

Updated: 2026-10-20