BitcoinOS (BOS) Just Pulled Off a Cross-Chain Transfer of 1 BTC to Cardano… and Back Again

The team behind BitcoinOS (BOS) has just performed what they’re calling a “bridgeless cross-chain transfer” of 1 BTC to Cardano… and back again.

According to BOS devs, the whole round-trip was done without relying on any of the traditional bridging infrastructure, and it arrived in the form of a programmable xBTC token.

Here’s how they did it:

1 BTC was locked directly on the Bitcoin blockchain and wrapped into a new token called xBTC—a programmable asset with cryptographic proof linking it to the original coin.

xBTC was then sent to the Cardano network via Sundial Protocol, a hybrid Bitcoin/Cardano L2.

From there, it passed through Handle, Cardano’s on-chain ID platform, before making its way back to Bitcoin, where it was burned and unwrapped—returning it to BTC.

The transfer was also touted as being custodian-free and secured using zero-knowledge proofs (ZKPs), which is a step up from older wrapped BTC models launched back in 2019.

This story continues to develop and will be updated accordingly.

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