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BitVM3 Advances Bridging Efficiency

Bitcoin Amsterdam released a new presentation by Robin Linus detailing BitVM3, outlining how garbled circuits reduce bridge dispute data from megabytes to kilobytes. The talk provides an update on the evolution from BitVM1–3 and explains how the new design enables trust-minimized Bitcoin sidechains and rollups using existing Bitcoin script.

Closing Panel "BitVM - Bridging Bitcoin" at BTC++ Istanbul, September 2025

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BitVM3 is the biggest leap in Bitcoin bridge efficiency since BitVM1. In this talk from Bitcoin Amsterdam, Robin Linus unveils BitVM3 — using garbled circuits to slash on-chain dispute costs from megabytes to kilobytes while keeping the 1-of-n honest security model. This is the breakthrough that finally makes trust-minimized Bitcoin sidechains and rollups practical. No covenants needed yet, no trusted operators, just pure Bitcoin script doing SNARK verification the smart way.

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