Fifth Edition · July 2026
Consensus Change Standards
A legal and technical framework for Bitcoin protocol governance.
The problem
Bitcoin has no minimum standard a consensus change must meet.
The BIP system provides a way to propose changes to Bitcoin's consensus rules, but sets no bar a proposal must clear before the community considers activation. There are no required review periods, no mandatory code-audit standards, no agreed activation thresholds, and no framework for weighing the legal and economic fallout of a failed activation.
This paper proposes one — a comprehensive framework, including a 20-point Consensus Change Readiness Checklist — drawn from the record of Bitcoin's prior consensus changes, established software-governance practice, and a legal analysis of the liabilities created by reckless activation.
What's inside
Seven sections and two appendices.
From the problem statement through historical precedent, the framework itself, the legal analysis, and a ready-to-apply adoption kit.
The Problem
BIP-110 as a case study for every failure mode a governance framework should prevent.
Historical Precedent
P2SH, SegWit, SegWit2x, and Taproot — activation parameters and outcomes, analyzed.
The Framework
Submission requirements, tiered review periods, audit standards, activation-threshold minimums, sunset clauses.
Legal Analysis
Negligence, tortious interference, fiduciary duties, pool-operator liability, and chain-split regulation.
Proposed Standards
The 20-criterion readiness checklist with a scoring system — the core of the framework.
Objections & Responses
The strongest counter-arguments to the framework, answered on their merits.
Documentary Record
The archived evidentiary record for the BIP-110 case study.
Adoption Kit
Model policy language for exchanges, mining pools, and node-software platforms.
Interactive tool · in your browser
Score any proposal against the §5.1 standard.
Run a proposed Bitcoin consensus change through the 20-criterion readiness checklist and get a live Green / Yellow / Orange / Red classification. Taproot and BIP-110 come preloaded. Nothing leaves your browser.
Why now
BIP-110 is on a block schedule.
The framework's Section 1 case study is not hypothetical. BIP-110's activation is keyed to specific block heights in 2026 — the reason the paper's timing matters.
Cite this work
Every edition is archived and citable.
Asaf Fulks, Consensus Change Standards: A Legal and Technical Framework for Bitcoin Protocol Governance (5th ed. 2026), consensuschange.org.
Prior editions stay live for pinned citations: Fourth Edition · Third Edition. Machine-readable metadata lives in CITATION.cff.