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ProofBridge is currently deployed on testnet. You can bridge assets between Ethereum Sepolia and Stellar Testnet today using the ProofBridge app. Mainnet deployment and additional chains are on the roadmap.
ProofBridge is testnet-only at this time. Do not send mainnet assets to any of the contract addresses below. Mainnet deployment is on the roadmap.

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Live networks

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Ethereum Sepolia

Chain ID: 11155111EVM chain running Solidity contracts. Supports native ETH bridging (auto-wrapped to WETH) and the ProofBridge example ERC-20.
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Stellar Testnet

Internal chain ID: 1000001Network passphrase: Test SDF Network ; September 2015Soroban-based contracts. Supports native XLM bridging, Stellar Asset Contracts (SAC), and SEP-41 tokens.

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Active cross-chain routes

Bridge native ETH from Ethereum Sepolia to wrapped ETH on Stellar (a SEP-41 token), or in the reverse direction.
DirectionSource tokenDestination token
Sepolia → StellarETH (auto-wrapped to WETH)wETH (SEP-41)
Stellar → SepoliawETH (SEP-41)ETH (auto-unwrapped)
Native ETH is automatically wrapped to WETH on deposit and unwrapped back to ETH on withdrawal. You never need to manually wrap or unwrap.

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Deployed contract addresses

The deployed contract addresses for AdManager, OrderPortal, MerkleManager, Verifier, and every bridged token on both chains live on the Smart contracts reference page — that page is the single source of truth and stays in sync with the on-chain deployment manifests in the monorepo.

View all deployed addresses

Sepolia and Stellar Testnet contract IDs with explorer links, plus the Order struct definition and per-contract role.

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Planned networks

ProofBridge is designed to extend across EVM and non-EVM chains. The following networks are planned for future deployment:

Arbitrum

Ethereum Layer 2 — high throughput, low latency.

Base

Ethereum Layer 2 — Coinbase-backed OP Stack chain.

Optimism

Ethereum Layer 2 — OP Stack ecosystem.

Polygon

EVM-compatible, wide DeFi ecosystem.

Starknet

ZK-rollup with native proof-friendly primitives.

Solana

High-throughput non-EVM chain, reached via the Soroban-style interface pattern.
Adding a new EVM chain requires deploying the four core contracts (Verifier, MerkleManager, AdManager, OrderPortal), configuring bidirectional chain links, and registering token routes. Non-EVM chains use the Stellar pattern: WASM contracts compiled against the target runtime. See the smart contracts reference.

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No registration required

You connect with your wallet — there are no accounts, usernames, or KYC requirements. Your wallet address is your identity on ProofBridge, and all trade terms are enforced on-chain rather than by any off-chain service.