Swap BTC to ETH on Starknet

atomiq.exchange lets you swap BTC to ETH on Starknet in a fully trustless, atomic way. Swaps are secured by a Bitcoin light client and on-chain smart contracts, so you keep custody of your funds the entire time and can always reclaim them if a swap does not complete.

Swap BTC to ETH

Why swap with Atomiq

Trustless & atomic

You keep custody the entire time and can always reclaim your funds if a swap does not complete.

No bridge or CEX

No custodial bridge and no centralized exchange: no deposits, no withdrawals, no counterparty risk.

Bitcoin-secured

Swaps are verified against Bitcoin proof-of-work via an on-chain Bitcoin light client.

RFQ pricing

Competitive quotes straight from market makers, with no AMM pools and no slippage.

What you need

A Bitcoin wallet and a Starknet wallet. Connect both in the app to begin your swap.

FAQ

1.What is Starknet?

Starknet is an Ethereum layer-2 ZK-rollup. Atomiq enables trustless, atomic swaps between native Bitcoin and Starknet assets, secured by a Bitcoin light client and on-chain contracts.

2.Do I have to trust anyone?

The whole swap is fully trustless and atomic, therefore you are not trusting anyone with the swap funds.

This means that your trade counterparty can only take the swap funds once it processes the swap (e.g. pay you out in BTC for Solana/Starknet -> Bitcoin swaps, or pay you out in Solana/Starknet asset for Bitcoin -> Solana/Starknet swaps) - this is ensured by using Submarine swaps and Proof-time locked contracts.

In case the counterparty don't cooperate you can claim the full amount back in a short while (5 days for lightning network swaps & 1 day for on-chain swaps) - this is ensured by smart contracts on Solana & Starknet.

Additionally all our code is open source and available on github for anyone to see. This includes smart contracts (Solana contracts, Starknet contracts), SDK, swap LP & also this webapp.

3.Why should you use atomiq.exchange?

1. No counterparty risk

You don't have to trust anyone with your swap, if the counterparty doesn't cooperate the smart contract makes sure you get the funds back. This is in stark contrast to centralized exchanges where you have to fully trust the exchange to not run away with your funds!

2. Hassle free swapping

No need for multiple steps like sending funds to an exchange, waiting for confirmations, making the trade, withdrawing the funds... With us you simply create the swap, send in the money directly from your wallet and receive it directly in your other wallet.

3. Best pricing

Our diverse network of market makers makes sure you always get the best pricing possible for the volume you are swapping!

4. Low fees

A competitive network of market makers is always trying to give you the best possible fee, unlike with AMMs like uniswap, every market maker chooses its own fee creating a dynamic market that makes sure you always get the lowest possible fee on the market.

4.Are you audited?
Our smart contracts were audited by independent security auditors:

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