Computing on Bitcoin #29
March 07, 2025 - Week 10
Happy Friday everyone!
Let's unpack the must-read stories and new breakthroughs in scalability, privacy, and interoperability in the space. Whether it’s zk-proofs, rollups, or bridges, Computing on Bitcoin News has got you covered.
Sergio Demian Lerner, Martin Jonas, and Ariel Futoransky from Fairgate Labs and RootstockLabs introduce ESSPI, an optimized method for signing BitVMX program inputs using ECDSA/Schnorr signatures. It enhances efficiency over one-time signatures, reducing storage overhead and enabling verification of uncompressed inputs like SPV proofs, NiPoPoWs and STARKs.
fairgate.io/publications
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ESSPI: ECDSA / Schnorr Signed Program Input for BitVMX
To verify Schnorr/Winternitz signature equivalence and safeguard against malformed or fraudulent data publications, we incorporate a secondary BitVMX instance. Furthermore, we integrate a SHA-256 hasher into the BitVMX CPU to hash and verify unsigned program input.
Our most advanced scheme, based on enveloping, seamlessly integrates with standard Bitcoin transactions, ensuring minimal overhead while maintaining security and scalability.
Bitlayer has partnered with Base, Starknet, Arbitrum, Sonic, and Plume Network to push forward BitVM development and compete in the race to make it practical.
blog.bitlayer.org
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Bitlayer Advances the First BitVM Implementation Through Major Strategic Partnerships
As the most immediate benefit of integration, BitVM Bridge will help unlock Bitcoin’s $1.9 trillion USD worth of liquidity on multichain ecosystems, allowing users on Base, Starknet, Arbitrum, Sonic, and Plume Network to gain access to a range of DeFi opportunities, while enjoying the highest security of Bitcoin.
A new paper explores multiparty computation in the context of Bitcoin, analyzing its implications for security and scalability. The research discusses cryptographic techniques that enhance trust-minimized protocols within Bitcoin’s ecosystem.
sciencedirect.com
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A lattice-based privacy-preserving decentralized multi-party payment scheme
Within many research efforts such as [2], [3], [4], in order to solve the aforementioned privacy protection problems, there are many proposed schemes to conceal the amount of a transaction or the addresses of the payer and payee. Except for hiding the amount of a transaction we are concerned about, it is noteworthy that most of the existing solutions only take into account the one-to-one tradings between one payer and one payee of a transaction, whereas other styles of tradings can be seen everywhere.
BOB integrates Fireblocks’ MPC wallet into its BTC DeFi ecosystem, leveraging BitVM for secure, trust-minimized Bitcoin transactions. This partnership enables institutions to participate in BTC DeFi without relying on custodial solutions.
docs.gobob.xyz
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BOB announces Fireblocks integration to provide institutions with access to BTC DeFi
BitVM is a mechanism to execute arbitrary programs on Bitcoin in an optimistic manner: the execution happens off-chain but in case of failures, disputes are resolved and enforced on-chain. Think Optimism, but on Bitcoin. The two main use cases are Bitcoin rollups and trust-minimized bridges. In both cases, we want to allow users to deposit and withdraw BTC from an L2 without trusting a 3rd party. With BitVM we can ensure BTC deposits cannot be stolen as long as there is a single honest and online node in the network - this node can be the depositor herself.
That’s it for this week! If you enjoyed this edition, please share it with fellow builders and thinkers.
We’ll be back next Friday with more insights from the world of Computing on Bitcoin ⚡
The Fairgate Team