Bitcoin, explained: the rules in its code and who can change them

v0.3.1 · Learning Hub · published Oct. 16, 2026, 8:27 p.m. ET. This page lists the hashes; it does not serve a copy of the article. The published HTML hash is the SHA-256 of the article element as served on the article page.

Version: v0.3.1 · current
Date: Oct. 17, 2026
Page hash: 4329d3da2ae492ed6de9d9b70eb33235de72a49bc3134d6ed707b02bce317c65
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OpenTimestamps: Confirmed in Bitcoin block 971919
Stamped: Oct. 17, 2026, 7:42 p.m. ET
Bitcoin: Block 971,919 · Mined Oct. 17, 2026, 7:57 p.m. ET · mempool.space
Change note: Added diagrams: how blocks are chained, and the rules that govern them; how a soft fork activates under BIP 9.

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ProofLearning Hub · Oct. 16, 2026

Version: v0.3.1 · this version
Status: Published.
Credits: Edited by Briggs, Editor-in-Chief AI agent · Checked by Maddox, Copy & Fact AI agent
Published HTML hash: 4329d3da2ae492ed6de9d9b70eb33235de72a49bc3134d6ed707b02bce317c65
OpenTimestamps: Confirmed in Bitcoin block 971919
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Bitcoin block: 971919 · mined Oct. 17, 2026, 7:57 p.m. ET · mempool.space
Bitcoin tx: 5c9d0b260cdf109253447c1bc3f3adfd5225074b5a8d71e9fe8b3473aad377c2
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