Computing on Bitcoin #34
April 11, 2025 - Week 15
Happy Friday everyone. This is a very special week for us, as BitVMX FORCE has been announced.
BitVMX FORCE aims to accelerate adoption and develop standards within the Bitcoin ecosystem for all related Disputable Computing on Bitcoin projects.
We are truly excited to bring this alliance to life, and hope to share our enthusiasm with all of you.
Now, let's get into this week's news:
Fairgate Labs, RootstockLabs, and Input Output have announced BitVMX FORCE, a strategic coalition formed to accelerate the development and adoption of the BitVMX technology. The initiative addresses Bitcoin’s historical limitations in programmability by enabling scalable, verifiable off-chain computation secured by Bitcoin itself. It aims to drive governance, promote education, and support adoption.
bitvmx.org/force
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Fairgate, Rootstock Labs, and Input | Output Launch BitVMX FORCE to Advance Bitcoin’s Scalability
BitVMX FORCE is committed to advancing the research, development, and adoption of BitVMX as the leading framework for computational tasks on Bitcoin. The alliance focuses on standardization and protocol enhancements to ensure seamless integration with future Bitcoin soft-forks and infrastructure improvements.
Jeremy Rubin's draft paper, 'Delbrag', introduces an enhancement to BitVM-style constructions by utilizing Yao's Garbled Circuits to reduce on-chain costs.
risczero.com/blog
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Showcasing Bitlayer's BitVM Bridge
Delbrag is a new improvement to BitVM style constructions that take advantage of Yao’s Garbled Circuits to minimize the on-chain costs.
Disclaimer: This is published as a draft, sharing for the benefit of all in an unfinished state.
Alexei Zamyatin, cofounder of BOB, shares insights on how BitVM and BitVM2 are reshaping the Bitcoin L2 landscape. He explains their role in enabling true rollups on Bitcoin and what’s needed for these rollups to reach 'Stage 1' classification.
castleisland.libsyn.com
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Alexei Zamyatin (Build on Bitcoin) on True Rollups on Bitcoin (EP.608)
Delbrag is a new improvement to BitVM style constructions that take advantage of Yao’s Garbled Circuits to minimize the on-chain costs.
Disclaimer: This is published as a draft, sharing for the benefit of all in an unfinished state.
BOB has gone live on deBridge, enabling seamless cross-chain transfers with over 20 blockchains. This integration supports BOB’s broader BitVM-based approach to building trust-minimized Bitcoin bridges.
blog.citrea.xyz
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Citrea’s Fee Mechanism: Bitcoin Security at Scale
deBridge, is a high-speed cross-chain interoperability protocol that enables fast and secure transfers of assets, NFTs, and data between blockchains.
Thanks to deBridge’s Interoperability-as-a-Service (IaaS) program, assets and data from 20+ EVM and non-EVM blockchains like Solana, Berachain, Hyperliquid and Sonic can now freely move to BOB and back—unlocking new liquidity routes for Bitcoin DeFi.
StarkWare and Weizmann Institute researchers have introduced ColliderVM, a system that overcomes Bitcoin script limitations to enable complex smart contracts.
eprint.iacr.org
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ColliderVM: Stateful Computation on Bitcoin without Fraud Proofs
Bitcoin script cannot easily access and store state information onchain without an upgrade such as BIP-347 (OP CAT); this makes performing general (stateful) computation on Bitcoin impossible to do directly. Despite this limitation, several approaches have been proposed to bypass it, with BitVM being the closest to production. BitVM enables fraud-proof-based computation on Bitcoin, relying on a 1-out-of-n honesty assumption.
This left the question of whether it is possible to achieve computation under the same honesty assumption without requiring onlookers to ensure validity through fraud proofs. In this note, we answer this question affirmatively by introducing ColliderVM, a new approach for performing computation on Bitcoin today.
That’s all for this edition of Computing on Bitcoin News.
Stay tuned for next week’s breakthroughs!
Have a great weekend!
The Fairgate Team