Cardano Marks a Milestone with First BTC-ADA Atomic Swap
Cardano has successfully executed its first atomic swap between Bitcoin and ADA, facilitating trustless transactions with low fees.
The cryptocurrency market is currently facing challenges due to a prolonged downturn; however, several projects are thriving and expanding their platforms. Recently, Cardano achieved a significant milestone in its Bitcoin decentralized finance (DeFi) integration by completing its first atomic swap involving BTC and ADA.
According to a tweet, the Cardano-based DeFi platform Fluid Tokens completed the swap of 0.0001 native BTC for 50 native ADA, illustrating that the Cardano team has successfully made BTC operable on its proof-of-stake blockchain.
The First BTC-ADA Atomic Swap
Fluid Tokens provides various services, including lending, borrowing, staking, NFT rentals, and cross-chain liquidity configurations involving Cardano and Bitcoin. This multi-chain platform utilizes users’ assets to deliver access to many services. Data from mempool indicates that the BTC-ADA atomic swap took place on March 25, with a fee rate of 15.0sat/vB.
This transaction is notable as it eliminated the need for third-party intermediaries, such as centralized exchanges. The entire process was managed through smart contracts, which are fundamental to atomic swaps. This advancement paves the way for Cardano users to conduct secure transactions involving both BTC and ADA, characterized by low gas fees and elimination of custody risks.
For years, Cardano has emphasized interoperability, integrating the Bitcoin network through trustless bridging. In October 2024, the ecosystem, through EMURGO—its initiative to promote Web3 adoption—announced a partnership with BitcoinOS (BOS) aimed at granting users access to BTC’s capital. BOS is a Bitcoin smart contract operating system.
This collaboration intends to incorporate the BOS Grail bridge into Cardano’s blockchain architecture, facilitating access to Bitcoin’s $1.3 trillion capital using Zero-Knowledge (ZK) proofs without depending on third-party intermediaries. That initiative has set a solid foundation for the interoperability that has flourished between Bitcoin and Cardano over the previous year.
Fostering Deeper Interactions Between Bitcoin and Cardano
Around one year ago, Cardano was gearing up to launch a system enabling Bitcoin DeFi, facilitating trustless bridging through the BOS Grail. By May 2025, the foundation was laid. Cardano is the first layer-1 blockchain to employ BOS in enabling DeFi applications, such as Fluid Tokens, to incorporate BTC functionalities for their users.
