How are teams implementing BitVM2 - and is it the final form of trustless Bitcoin bridging? š
At House of ZKās @Bitcoin Economy Conference, experts shared how their BitVM2 implementations differ, debated tradeoffs, and gave a sneak peek into BitVM3 and garbled circuits.
Featuring:
š¹ @robin_linus, Creator of BitVM
š¹ @sd_eigen, Core Contributor at @GOATRollup
š¹ @AlpacaYovela, Co-founder of @fiamma_labs
š¹ @PimaBTC, Head of Ecosystem at @BimaBTC
š¹ @trackoor, Co-founder of @nubit_org
š¹ @nikki_sunset, Ecosystem Growth Lead at @build_on_bob
BitVM2 implementations are diverging - but teams are aligning around shared tooling and SNARK verifiers.
Also available on YouTube:
Key takeaways from the panel āDifferences in BitVM2 Implementations - and is BitVM2 the Final Form?ā at House of ZKās @Bitcoin Economy Conference š
1ļøā£ Design Divergence:
ā¢ @fiamma_labs: 1-click BTC bridge + off-chain challenge mechanism
ā¢ @GOATRollup: Decentralized sequencer + VRF-based challenge selection
ā¢ @build_on_bob: Uses Babylon staking to checkpoint state to Bitcoin for finality
ā¢ @nubit_org: Formal verification tools & dev-friendly DSL
2ļøā£ Optimization Paths:
ā¢ Everyone wants to shrink ~4MB assert/proof txs
ā¢ BitVM3 leverages garbled circuits to drastically compress proofs - cutting tx size by ~1000x vs BitVM1, but at the cost of more complex challenger coordination and encoding logic
ā¢ But garbled circuits adds complexity, especially around challenger setup
3ļøā£ Trust Assumptions:
ā¢ Tradeoffs: offloading data to @ethereum vs staying BTC-native
ā¢ Some L2s still rely on permissioned validators or fragile light clients for proof verification
4ļøā£ Fragmentation vs Alignment:
ā¢ Each L2 needs custom bridge logic
ā¢ BitVM Alliance unifies core SNARK verifier
ā¢ BitVM is early, not final - but alignment around SNARK-based verification is accelerating
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