Bitcoin-native protocol enables direct BTC cross-chain swaps

TLDR

A new integration between Bitcoin-native AMM radFi and cross-network solver SODAX now lets users swap native BTC directly into assets like ETH, SOL, and USDC across chains without wrapping.

1. RadFi and SODAX launched live BTC/ETH, BTC/SOL, and BTC/USDC cross-network swaps that settle in under one minute while keeping users in self-custody.
2. The design avoids wrapped BTC and centralized exchanges, aiming to cut bridge risk and unify liquidity for Bitcoin holders who want multi-chain exposure.
3. Adoption, security, and competition from other Bitcoin DeFi stacks like OP_NET will determine whether this becomes a core route for moving BTC across ecosystems.

Deep Dive

1. How Direct BTC Cross-Chain Swaps Work

RadFi is a Bitcoin-native automated market maker that has integrated with SODAX to enable direct cross-network trading of native BTC for Ethereum, Solana, and USDC without wrapped tokens or custodial hops. The launch supports BTC/ETH, BTC/SOL, and BTC/USDC, with real assets moving on their respective mainnets, coordinated by the SODAX Solver across more than 17 networks including Ethereum, Solana, Arbitrum, Base, Avalanche, and Sui.

According to the integration announcement, trades settle in under one minute, reportedly more than 10 times faster than typical cross-network Bitcoin flows that can take around 27 minutes, and the system does not wait for a standard Bitcoin block confirmation by relying on radFis own instant-finality infrastructure. RadFi currently has about $1.88 million in total value locked and more than 10,000 registered wallets, with plans to add Rune-based assets in future phases.

2. Why This Is Different From Wrapped BTC And Bridges

Traditional cross-chain BTC usage often locks coins on Bitcoin and mints a synthetic version elsewhere, or routes through centralized exchanges, creating large custodial and bridge attack surfaces that have led to billions in losses industry-wide. The radFiSODAX model instead treats the swap as a coordinated multi-chain trade where the users BTC never becomes a synthetic token, and settlement happens atomically across native assets.

This fits a broader shift toward native swap-based interoperability that avoids the classic lock-and-mint bridge model and tries to keep users in self-custody while still giving them access to liquidity on chains like Ethereum and Solana. For Bitcoin holders, that could make it easier to move into DeFi or stablecoins without trusting a centralized venue or long-lived wrapped BTC bridge.

3. Adoption Signals, Trade-Offs, And Competitors

The integration is still early-stage, with relatively modest TVL and a press-release style launch, so its importance will depend on whether volumes, wallet counts, and supported pairs grow meaningfully over time. The architecture also introduces its own risks: SODAX uses a multi-bridge, solver-based execution system, so users inherit smart contract and routing risk even as they sidestep traditional bridges and exchanges.

At the same time, other Bitcoin-focused efforts are competing for similar territory. OP_NET has gone live with a SlowFi DeFi stack that runs smart contracts and token swaps directly in Bitcoin transactions using BTC as the only gas asset, while services like Boltz use atomic swaps to connect Lightning BTC to assets like USDT via wrapped intermediaries.

Conclusion

RadFis integration with SODAX is a meaningful step toward letting Bitcoin function as a first-class, self-custodied asset across multiple chains without relying on wrapped BTC or centralized exchanges. The real test will be whether this approach can scale liquidity and maintain security while competing with other emerging Bitcoin DeFi stacks and atomic swap solutions. For now, it is an early signal that Bitcoin-native no longer has to mean Bitcoin-isolated.