Introduction
Atomiq.exchange is a fully trustless cross-chain decentralized exchange (DEX) enabling swaps between Bitcoin and smart contract blockchains (Solana, Starknet, EVM) without trusting any intermediary.
In contrast to existing cross-chain solutions that force users to choose between usability and trustlessness, Atomiq achieves both by leveraging Bitcoin proof-of-work consensus through on-chain light client verification and two novel swap primitives: Proof-time locked contracts (PrTLCs) and UTXO-controlled vaults. These primitives enable non-custodial, trustless swaps with atomic settlement guarantees. For swaps involving the Bitcoin Lightning Network, the protocol also utilizes established HTLC-based mechanisms. Combined with an off-chain request-for-quote (RFQ) system, this enables zero slippage swaps with competitive price discovery—without exposing participants to MEV risks.
The protocol uses a network of Liquidity Provider nodes to process swaps via RFQ—anyone can run an LP node. LPs are not trusted: swaps only complete when both sides cooperate, enforced by smart contract escrows with atomic settlement guarantees. In case the swap fails, the user will simply get their funds returned to them in a refund.
Learn
Learn how Atomiq works end to end: the actors in the protocol, the primitives that secure settlement, the swap flows they enable, and the smart contracts that implement them.
📄️ Protocol Actors
An overview of actors in the atomiq swap protocols.
📄️ Core Primitives
Core primitives used in the atomiq swap protocols.
📄️ Swap Protocols
Description of atomiq swap protocols.
📄️ Smart Contracts
Smart contracts architecture, modules, and deployed addresses.
Use Cases
Swap
Fast, secure, and trustless cross-chain swaps between Bitcoin and smart chain assets. No custody risk, no bridging delays—just atomic settlement with cryptographic guarantees.
Build
Integrate trustless Bitcoin swaps into your application using the Atomiq SDK. Build Bitcoin-native onboarding flows, DeFi integrations, or custom swap interfaces.
SDK Documentation → | SDK Reference →
Provide Liquidity
Become a Liquidity Provider by running an LP node. Earn fees by providing quotes and settling swaps, while maintaining full control of your funds through non-custodial smart contracts.