Looking for an independent verifier?
For an independent client-side verifier on a separate trust boundary, see
verify.headlessoracle.com
— same Ed25519 verification, served from a separate Cloudflare Pages deployment, source at
github.com/headlessoracle/verify.
Verify Signed Market-State Attestation
Paste a signed receipt JSON below to independently verify its Ed25519 signature using the Web Crypto API.
This happens entirely in your browser. No data is sent to our servers.
⚠️ Browser Incompatible: Your browser doesn't support Ed25519. Please use Chrome 113+, Firefox 128+, or the latest Safari.
Hex is the canonical format. PEM/SPKI is also accepted as a legacy fallback. Public keys are published at /.well-known/oracle-keys.json (RFC 8615).