What you can do with ProofBridge
ProofBridge supports two roles. You can use ProofBridge as a Bridger when you want to move assets from one chain to another, or as a Maker when you want to earn by providing cross-chain liquidity.Bridge assets
Deposit tokens on one chain and receive equivalent tokens on another. No registration, no KYC — just connect your wallet.
Provide liquidity
Post a liquidity ad on your chosen chain and earn fees whenever a Bridger uses your liquidity to settle a transfer.
Key benefits
Trustless settlement. Funds are released only after a zero-knowledge proof confirms both sides of the trade are valid. Neither party can take the other’s funds without completing their end of the deal. Peer-to-peer matching. Bridgers and Makers interact directly through on-chain contracts. There is no bridge operator controlling liquidity pools or deciding which transfers to process. No registration required. Signing in with your wallet is all the authentication you need — either via Sign-In With Ethereum (SIWE) for EVM wallets or a Stellar wallet signature. Non-custodial. Your tokens are locked in auditable smart contracts, not held by a third party. The contracts release funds only when the ZK proof passes on-chain verification.Supported networks
ProofBridge is currently live on the following testnets:| Network | Chain ID | Role |
|---|---|---|
| Ethereum Sepolia | 11155111 | Source or destination chain |
| Stellar Testnet | 1000001 | Source or destination chain |
Stellar does not have a native numeric chain ID —
1000001 is the internal identifier ProofBridge uses to distinguish Stellar Testnet inside the relayer and frontend. The canonical Stellar network identity is the passphrase Test SDF Network ; September 2015.ProofBridge is currently deployed on testnets. Mainnet deployments are on the roadmap. Use testnet funds only.
Active bridging routes
The live routes for native token bridging are:- ETH (Sepolia) ↔ wETH (Stellar) — ETH is automatically wrapped to WETH on deposit and unwrapped on withdrawal. The Stellar side uses a SEP-41-compatible contract.
- XLM (Stellar) ↔ wXLM (Sepolia) — XLM is automatically wrapped to WXLM on deposit and unwrapped on withdrawal.
The two user roles
Bridgers
A Bridger is any user who wants to move assets from one chain to another. You deposit tokens on the source chain using the OrderPortal contract. Once the deposit is confirmed and a ZK proof is generated, you receive the equivalent tokens on the destination chain — all without trusting an intermediary.Makers
A Maker is a liquidity provider. You post a liquidity ad on a chain using the AdManager contract, specifying how much liquidity you want to offer and at what rate. When a Bridger selects your ad and completes a deposit, the ZK proof system releases your destination-chain liquidity to the Bridger and sends the Bridger’s source-chain tokens to your designated address.You do not need to choose a role permanently. The same wallet can act as a Bridger on one trade and a Maker on another.
Why we’re building ProofBridge
Cross-chain bridges have lost more than $2B to hacks, almost all of them targeting the same architectural weak point: a trusted multisig, validator set, or relayer that custody user funds mid-transfer. ProofBridge replaces that trust boundary with cryptography — users prove their own deposits, funds never leave on-chain escrow, and the relayer can only submit proofs the contract independently verifies.Read the full problem statement and solution
The security failures we’re designing away, the dual authentication model, and the end-state design with BLS signature aggregation.
What’s on the roadmap
ProofBridge is live on testnet with a single relayer coordinating settlement. That single-relayer dependency is a transitional bootstrap, not the end state. Planned upgrades include:- BLS signature aggregation for a decentralized relayer set, removing the last trust assumption.
- AI automation layer for anomaly detection, automated order matching, and a Maker/Bridger co-pilot that can act inside scoped, user-authorized bounds.
- More chains: Arbitrum, Base, Optimism, Polygon, Starknet, and Solana.
See the full roadmap
Phased rollout from testnet to mainnet, BLS aggregation milestone, and the AI agent enhancement design.
Where to go next
Quickstart
Connect your wallet and make your first bridge transfer in a few steps.
How it works
See the full end-to-end flow, from liquidity ads to ZK-proof settlement.
Run it locally
Bootstrap the full stack on your machine with one command.
Compared to other bridges
How ProofBridge differs from Hashport, Wormhole, Stargate, and LayerZero.