Bitcoin DeFi on Cardano Reaches Milestone with First BTC-ADA Atomic Exchange

This development opens the doors for Cardano users to start trustless transactions involving BTC and ADA, with low gas costs and no risks of arrest.

The crypto sector may be struggling with the ongoing bear market, but some projects are endlessly building and expanding their ecosystem. One such is Cardano, which recently hit a milestone in its integration of Bitcoin decentralized finance (DeFi), by completing the first atomic exchange between BTC and the blockchain’s native asset, ADA.

According to the tweet, the Cardano-based DeFi platform Fluid Tokens has completed the transaction, exchanging 0.0001 native BTC for 50 native ADA. Such a move shows that the Cardano team has succeeded in making BTC available on the proof-of-stake blockchain.

The first BTC-ADA Atomic Swap

Fluid Tokens offers many services such as borrowing, lending, monetization, NFT rental, and cross-chain liquidity across Cardano and Bitcoin. A multi-chain platform uses user assets to provide access to various services. Data from mempool shows that the BTC-ADA atomic swap happened on March 25th with a payout rate of 15.0sat/vB.

The function is important because it did not require third-party intermediaries, such as centralized exchanges. Everything is facilitated by smart contracts, as is always the case with atomic exchanges. This development opens the doors for Cardano users to start trustless transactions involving BTC and ADA, with low gas costs and no risks of arrest.

Cardano has been eager to collaborate for years, connecting the Bitcoin network through a trustless bridge. In October 2024, the network, through EMURGO, its project to improve the adoption of Web3, announced a collaboration with BitcoinOS (BOS) to give users access to the BTC capital. BOS is a Bitcoin smart contract operating system.

The partnership aims to integrate the BOS Grail bridge into the Cardano blockchain framework, providing access to Bitcoin’s $1.3 trillion capital using Zero-Knowledge (ZK) proof without relying on third-party intermediaries. That move set the stage for a blossoming partnership between Bitcoin and Cardano last year.

Promoting Deep Collaboration Between Bitcoin and Cardano

This time last year, Cardano was preparing to launch Bitcoin DeFi capabilities, allowing for trustless bridging with BOS Grail. By May 2025, the wheels have started to move. Cardano is the first layer-1 chain to use BOS in allowing DeFi applications, such as Fluid Tokens, to provide BTC functionality to their users.

You may also like:

After breaking the atomic exchange principle of BTC-ADA, decentralized applications on Cardano are working to improve the stability and organization of the BOS to create an environment that allows for deeper communication between the contract infrastructure of Bitcoin and Cardano.