# BIP66 activation (v3)

> A passage of **The βook of βitcoin** — the Bitcoin chain read as a book. This is
> block 363,725 read as a chapter, and its transaction 1
> (of 1) read as a section of Glossia prose. Every byte of the
> transaction is carried in the prose and decodes back out losslessly; the
> connective grammar is the translator's, the content is the chain's.

- **Citation:** II β77 ■510 §1 (Volume II, Book 77, Chapter 510, section 1)
- **Block:** 363,725 — BIP66 activation (v3)
- **Block hash:** `00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931`
- **Transaction id:** `20ec1f9a155beb9f46cef7dab5bc86e7c9e26052b3b1a960106f0586d773a8f0`
- **Read live:** https://bookofbitcoin.io/bitcoin-book.html?txid=20ec1f9a155beb9f46cef7dab5bc86e7c9e26052b3b1a960106f0586d773a8f0

## Chapter frontispiece — block 363,725

Block hash, as prose: ⌘¹⁸⁶ *Abuse abuse marriage to hope. Bachelor far donate session. Pond debate a first fever. Muscle foot a claim. Shoe may set a denial. Cow reflect tuna to siege. Our far scale is rid.* ⓪⁷⁰

- **version:** v3 — block version 3 (0x00000003) — pre-BIP9 integer form
- **previous block:** ⌘¹⁸⁸ Abuse account its sick yes across script. Thunder may ice dentist to sniff. Person set our endless curve. Master may stock patrol. A praise too accuse concert. A pop bit may observe the scale. ⓪⁶⁸
  - hex: `00000000000000000fb32e0d606a42615d44d93449a36ba64ee018de6009f898`
- **merkle root:** ⋔ Abandon get an acid luxury. Brother see pyramid to gate. Resource may dose the benefit. Out is random to tax. The bet once oblige sheriff. Oyster select version to our robust water. Impulse pony its stove. The rally due snack the leisure lottery.
  - hex: `20ec1f9a155beb9f46cef7dab5bc86e7c9e26052b3b1a960106f0586d773a8f0`
- **timestamp:** 2015-07-04 01:54 UTC
- **difficulty target:** β₆₇ < 1458574×256²¹ — the block hash above reads below this target — nBits 1816418e — mantissa 1458574 (2·13·56099) shifted up 21 bytes: the target 000000000000000016418e000000000000000000000000000000000000000000, which a valid block hash must read below (67 leading zero bits) — difficulty 49,402,014,931 (relative to the genesis block)
- **nonce:** η 2·23·47·4549

## § 1 — BIP66 activation (v3)

Transaction id, as prose: ⌘²⁵⁶ *Abandon get an acid luxury. Brother see pyramid to gate. Resource may dose the benefit. Out is random to tax. The bet once oblige sheriff. Oyster select version to our robust water. Impulse pony its stove. The rally due snack the leisure lottery.*

- **version:** 1
- **input 1:** coinbase (∅ — no previous output; new coin)
  - script: ■363725η29 “Mined by AntPool” Abandon abuse to adapt. The sky once see our health. Liberty pause its trigger. Apple now traffic design. Figure abandon gasp to gym. Abandon may set a cap.
  - sequence: ● — final — disables the transaction locktime for this input
- **output 1:** 25.00000000 ₿
  - script: ⧉ ⌖ h²⁰ An absurd account powder baby. Hit may believe relief. A green poem miss venue to safe. Spike may inherit opera via move between parade. ≡ ∇
- **locktime:** □ — no locktime — final with respect to time

## Commentary

> A reading of the record, not the record. The passage above is the chain's own
> speech — verifiable byte for byte, no author, public domain. What follows is
> somebody's account of why it is worth reading: editorial, licensed CC BY 4.0,
> and no more authoritative than the argument behind it.

Strict DER encoding: a signature must from here be written one way only. The rule closed a class of disagreement that came from asking a general-purpose cryptography library what counted as a signature — a consensus system cannot delegate that question.

Its activation also produced a six-block fork: miners building on a block they had not themselves validated extended an invalid chain, and the split was resolved by hash power and phone calls rather than by rules. A soft fork is only as strong as the validation standing behind the signals.

— Claude Fable 5

---

*Reading the notation:* italic prose passages are Glossia encodings of the raw
bytes (decodable with the [glossia](https://crates.io/crates/glossia) engine,
wordlist `bip39`, language `english`); glyphs are the book's script notation
(opcode and data marks); small structural integers (version, counts, values,
locktime) are printed literally. A block hash reads ⌘ᵐ <prose> ⓪ⁿ — the
m = 256 − n bits of the double-SHA256 (⌘, OP_HASH256), Glossia-encoded as
⌈m/8⌉ bytes, then the n proof-of-work zero bits that follow them in the
internal-order bytes the prose encodes. See
[/llms.txt](https://bookofbitcoin.io/llms.txt) for how any other passage on the chain can be
fetched and read the same way.