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Evidence layer for onchain payments

Coston2 testnet demo

Official documentation for ProofRails — the open evidence and translation layer for onchain payments.

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Coston2 testnet demo

The x402test app demonstrates a Coston2 payment unlock flow:

1. Connect wallet.

2. Switch to Coston2.

3. Fund gas.

4. Mint MockUSDT0.

5. Settle the x402-style payment.

6. Verify settlement with the backend.

7. Unlock the resource.

8. Create and verify a ProofRails receipt.

The settlement transaction is not the same object as a ProofRails receipt or bundle hash. A verifier should receive a receipt ID or bundle hash once receipt creation completes.