BitcoinOS announced on May 4, 2025, the completion of a bridgeless Bitcoin transfer to the Cardano mainnet. This achievement was powered by BitcoinOS’s BitSNARK protocol and the new xBTC token standard, marking a historic first for decentralized finance.
BitSNARK and xBTC: Redefining Cross-Chain Transfers
The process began with 1 BTC locked on Bitcoin Layer 1 via the BitSNARK zero-knowledge protocol, which was then wrapped into an unchained token named xBTC. Unlike traditional bridging solutions, BitcoinOS sent 1 xBTC directly to Sundial’s Cardano wallet, bypassing third-party custodians. This was made possible through Sundial Protocol, a hybrid Layer 2 infrastructure supporting both Bitcoin and Cardano networks.
The token’s journey concluded with its transfer to a wallet owned by ADA Handle, followed by the burning of the xBTC token and the release of the original BTC back to Bitcoin, completing a full round-trip without centralized intermediaries. This bridgeless model, grounded in zero-knowledge cryptography, ensures enhanced security, transparency, and decentralization.
BOSes – we did it.🟧🧙♂️
— BitcoinOS (@BTC_OS) May 5, 2025
On May 4 2025, we successfully demoed the first *bridgeless* transfer of BTC between Bitcoin and Cardano mainnet. 🟠🤝🔵
Performed with @SundialProtocol and @adahandle, using our all-new unchained token standard.🔓
Here’s what happened. 🧵👇 pic.twitter.com/JO9xZKrLUE
DeFi Implications and Cardano’s Rising Role
This development significantly boosts Cardano’s standing in the DeFi space, enabling direct Bitcoin interaction without traditional risks. Charles Hoskinson, Cardano’s founder, hailed the integration as a “major step” toward a more interconnected blockchain environment. Analysts at Bitget echoed this, citing the potential for new DeFi applications and broader utility for Bitcoin holders within the Cardano ecosystem.
Although ADA experienced a 2.86% dip over the past 24 hours, currently trading around $0.6585, Crypto News Flash (CNF) noted that ADA could surge to $10 if it breaks its $1 resistance, signaling optimism despite short-term price fluctuations.
The Road Ahead: Bitcoin Staking and Beyond
The successful bridgeless transfer showcases Cardano’s strategic vision centered on interoperability and security. Future developments may include Bitcoin staking and advanced DeFi use cases, positioning Cardano as a core infrastructure layer in the evolving multi-chain ecosystem. As cross-chain protocols mature, Cardano is now clearly leading the charge toward a decentralized, interoperable Web3 future.
Disclaimer: The information in this article is for general purposes only and does not constitute financial advice. The author’s views are personal and may not reflect the views of Chain Affairs. Before making any investment decisions, you should always conduct your own research. Chain Affairs is not responsible for any financial losses.
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