BitcoinOS Executes First-Ever Bridgeless BTC Transfer Between Bitcoin and Cardano
BitcoinOS has achieved a major milestone in blockchain interoperability by completing the first bridgeless cross-chain transfer of 1 BTC between the Bitcoin and Cardano blockchains—without using traditional custodial bridges or intermediaries.
How It Worked: A Bridgeless Transfer Using ZK Proofs
The transaction, conducted on the mainnet, wrapped 1 BTC into xBTC, a programmable token powered by BitSNARK—BitcoinOS’s zero-knowledge proof system. This innovative method eliminated the need for custodial bridges, reducing both risk and transfer delays.
xBTC was:
Wrapped on Bitcoin,
Transferred to a Cardano wallet via Sundial Protocol,
Moved to Handle’s wallet (Cardano’s identity platform),
Returned to Bitcoin and unwrapped back into native BTC.
This process demonstrated a secure, fast, and trustless method of transferring assets across blockchains.
Collaborative Effort and Industry Impact
BitcoinOS partnered with:
Sundial Protocol – a hybrid L2 solution connecting Bitcoin and Cardano,
Handle – a Cardano-based identity and transaction platform.
Edan Yago, core contributor at BitcoinOS, said this proves Bitcoin can now gain smart contract functionality without compromising its core principles.
Sheldon Hunt, founder of Sundial, called it a turning point for decentralized interoperability.
Jonah Peralta of Handle emphasized that the breakthrough unlocks smart contracts and scalability for Bitcoin, while preserving its security and decentralization.
Why It Matters
This innovation allows Bitcoin to participate in DeFi across multiple blockchains without relying on bridges, solving long-standing issues like:
Custodial risk
Fragmented liquidity
Interoperability limitations
By embedding programmable logic through zero-knowledge proofs, BitcoinOS paves the way for secure, scalable Layer 2 (L2) solutions anchored directly to the Bitcoin network.
