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Evidence layer for onchain payments

x402 overview

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

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x402 overview

ProofRails includes x402-style payment-gated API endpoints. The x402 layer is separate from the core receipt model: it controls access to premium actions, while ProofRails records and verifies evidence around payment activity.

Premium endpoint examples:

  • paid bundle verification
  • statement generation
  • ISO artifact access
  • FX lookup
  • bulk verification
  • refund workflow access

Use precise language: “x402 payment-gated API endpoints” is accurate. Do not imply unsupported payment networks or production settlement paths are live unless deployment configuration proves it.