Wiki / Concepts / Ordinals and inscriptions

Ordinals and inscriptions

From the Bitcoin Takeover Wiki · ✓ 8 sources · 3 podcast anchors · built 2026-11-13

Casey Rodarmor's numbering scheme for satoshis and the inscriptions built on it, which put arbitrary data in Taproot witnesses from 2023 and set off the data-carrier dispute.

◆ Takeover vieweditorial · opinion, labelled

The wiki's angle: Ordinals needed no fork at all, yet they produced the next fork fight, because they changed what people thought blocks were for.[8][3]

Contents

  1. Theory
  2. Inscriptions
  3. Debate
  4. References

Theory

The ord handbook says “Ordinals are a numbering scheme for satoshis that allows tracking and transferring individual sats”, with sats numbered in the order they are mined and transferred “first-in-first-out”[1]. The ord README describes the software as an index, block explorer and command-line wallet[2].

Inscriptions

The handbook says inscription content “is entirely on-chain, stored in taproot script-path spend scripts”, made with a two-phase commit/reveal procedure and wrapped in “envelopes” of the form OP_FALSE OP_IF … OP_ENDIF[3]. The ord 0.4.0 release was published on 20 January 2023[4]. On Bitcoin Takeover in February 2023 Casey Rodarmor said the design he settled on puts the inscription content “in what is called the witness”[5]. In the same episode he compared Ordinals and inscriptions with Taro and RGB[6]. The episode's transcript is titled S13 E3 while its file name says s12_e13; the wiki cites it by date[5].

Debate

Murch argued on S15 E50 against the claim that Taproot caused ordinals[7]. The Takeover BLAKE2b feature traces the 2025 OP_RETURN fight to “the Ordinals wave of 2023”[8].

References

  1. primaryord handbook, “Ordinal Theory Overview” [archived]
  2. primaryord README, GitHub ordinals/ord [archived]
  3. primaryord handbook, “Inscriptions” [archived]
  4. primaryord release 0.4.0 (published 2023-01-20 18:45 UTC) [archived]
  5. episodeCasey Rodarmor on Ordinals (6 Feb 2023; transcript titled S13 E3, file s12_e13): inscriptions in the witness▶ listen at 8:44timestamp transcript-derived, pending a listen [archived]
  6. episodeCasey Rodarmor on Ordinals (6 Feb 2023): Ordinals and inscriptions compared with Taro and RGB▶ listen at 50:12timestamp transcript-derived, pending a listen [archived]
  7. episodeS15 E50: Murch on “Taproot caused ordinals”▶ listen at 54:45timestamp transcript-derived, pending a listen [archived]
  8. btkBitcoin BLAKE2b: The Fork That Fired the Miners (BTCTKVR: Forks!) [archived]

Related

The 2025 OP_RETURN fight
The 2025 dispute over Bitcoin Core lifting its default OP_RETURN limit, which pushed opponents to Bitcoin Knot
Taproot activation (2021)
The Schnorr/Taproot soft fork, signalled through Speedy Trial in 2021, locked in at block 687,285 and activate
Bitcoin Knots
Luke Dashjr's derivative of Bitcoin Core: the long-running alternative client that became the base of the 2025
Bitcoin BLAKE2b (XBT / BTCB2)
The 2026 fork that grew out of Luke Dashjr's BIP-110 anti-spam soft fork and replaced SHA-256d with BLAKE2b. S
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