Bitcoin Core v30 Explained: Spam, Filters & the Knots Debate | Antoine Poinsot
10/7/2025 · 84 min · transcript via mlx
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Key topics
— Bitcoin Core v30 removes the OP_RETURN data limit and makes package relay robust for Lightning, addressing design flaws rather than responding to spam concerns.
— The Core vs Knots divide reflects fundamental disagreement about policy versus consensus changes, with Knots maintaining 1,500+ unreviewed modifications to Core's codebase.
— UTXO set bloat is better prevented by allowing legitimate use cases (like BitVM penalty transactions) to use OP_RETURN rather than forcing them toward fake pubkeys.
— Bitcoin Core operates on technical merit and code review, not ideology; developers assume corruption and design defenses accordingly, rather than being captured by politics.
— Policy relay rules cannot stop miners from including transactions; tighter filters make the network irrelevant rather than preventing adoption of unwanted data on-chain.
— Storing potentially illegal data on Bitcoin is an inherent protocol risk that cannot be solved by developers without breaking censorship resistance; the recent narrative shift appears to weaponize this concern.
Market & price signals
— None discussed.
Actionable insights
— Operators running Bitcoin Core should upgrade from v27 to at least v28 or v29 before v27 support ends; v30 does not require immediate adoption but offers important Lightning improvements and security fixes.
— Running Knots introduces unreviewed code changes to validation and peer-to-peer layers; if switching implementations, understand that no single developer review process replaces Bitcoin Core's multi-eyes standard.
— Do not assume Bitcoin needs ossification; known consensus bugs exist and legitimate new use cases (Lightning improvements, scriptable covenants) justify careful, reviewed changes over multi-year timescales.
Episode sponsorships
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