BitcoinOS has completed the transaction of transferring Bitcoin to Cardano and vice versa without a bridge, opening a new era for cross-chain interoperability.
BitcoinOS has marked an important step in blockchain interaction by successfully announcing the first bitcoin transfer transaction between two blockchains – Bitcoin and Cardano – without using traditional bridges. This demonstration was performed on the Primary Network and opens up new prospects for cross-chain interoperability in the cryptocurrency space.
Breakthrough Technology with Zero-Knowledge Proof
The core of this achievement is the use of BitSNARK – a zero-knowledge proof system developed by BitcoinOS. During the demonstration, 1 Bitcoin was wrapped into xBTC, a programmable token capable of moving between blockchains without intermediary custody.
This cross-chain transaction process included four main steps: First, BTC was wrapped into xBTC on the Bitcoin blockchain. Next, xBTC was transferred to the Sundial wallet on Cardano without using a bridge. Then, xBTC was transferred to the Handle wallet, confirming ownership. Finally, the token returned to Bitcoin and was unwrapped back to the original BTC.
The entire process was carried out in collaboration with Sundial Protocol – a Layer 2 solution combining Bitcoin-Cardano – and Handle, Cardano's digital identity platform.
Edan Yago, a key member of BitcoinOS, emphasized the significance of this achievement: "This model proves that Bitcoin can expand smart contract capabilities while maintaining the original blockchain security." He also mentioned that this technology could be expanded to other UTXO blockchains like Litecoin or Kaspa.
Sheldon Hunt, founder of Sundial Protocol, called this "a turning point for the entire blockchain ecosystem", while Jonah Peralta from Handle assessed it as a "breakthrough that enables Bitcoin to activate smart contracts and expand processing capabilities while maintaining the original security layer."
This technology addresses many long-standing issues in the blockchain space such as custody risks, liquidation fragmentation between ecosystems, and Bitcoin's smart contract limitations. By applying zero-knowledge proof, BitcoinOS has embedded programming logic directly into Bitcoin transactions, opening up possibilities for Layer 2 solutions with full native security from the Bitcoin network.
This achievement opens up prospects for BitcoinOS to engage more deeply in decentralized finance (DeFi) applications across multiple blockchains without using bridges, while creating a foundation for the development of safer cross-chain applications in the future.
