{
      "tool_id": "art-129-webbotauth-signature-verifier",
      "tool_version": "1.0.0",
      "display_name": "Web Bot Auth Signature Verifier (RFC 9421)",
      "mcp_name": "verify_webbotauth_signature",
      "mandate_type": "compliance_mandate",
      "wave": 24,
      "gpu": false,
      "url": "https://ainumbers.co/chaingraph/art-129-webbotauth-signature-verifier.html",
      "description": "Reconstruct the RFC 9421 signature base and verify the Ed25519 Web Bot Auth signature against a caller-supplied public key, zero network. Checks alg=ed25519, tag=web-bot-auth, and freshness. Feeds the signatures-directory validator (art-130).",
      "input_schema_ref": "chaingraph/art-129-webbotauth-signature-verifier.html#manifest",
      "consumes": [],
      "feeds": [
        "art-130-signature-directory-validator"
      ],
      "status": "live",
      "conformance_fixtures": true,
      "compute_capability": "server",
      "compute_images": [{"system":"sha256-source","image_id":"sha256:6e54e84c5d83d433fc37b31030c1fd5bc32d029f016f7ab3ea0a37883b3f8615","valid_from":"2026-07-10"},{"system":"risc0","image_id":"sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6","valid_from":"2026-06-28"}],
      "compute_proof": {
        "type": "ZkVmReceipt",
        "system": "risc0",
        "receiptFormat": "groth16-bn254",
        "imageId": "sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6",
        "seal": "DwmfLy2utKYiGXhE6ongaMCUx9dJ+T9rQ20MTC//goArqs8uVhTVuW0wY25dH560HwmpX8hwm3paZKsoIVQljxEMLhSGvgEyfwWW7BhBfOX0dT5J0dshHAMrqwKCqmIHLHvQ16cbdQodCxzM1xZJ0+feR13rs16r5wyr2RNkouQHZ8PMglG2BdOAF6wYE6WjRsAkQpVNNRX9ZJMCd6CmixpCk4Il9lQSILJuvaTV60KPY7frGR8p3IGLtLN64z5TD8aIm+pDu0fX/OG4653HR549usyNhhat1mQc5/nbB4kIE4XCNKExY/UR2X+ucpmfx6a/euCArOHKN9WSAEkypQ==",
        "journal": {
          "chaingraph_version": "0.4.0",
          "kernel_digest": "sha256:3ce2b0efbe2ecde4d522d881a0d91334ba1da4d676327120e485608e13f22a8d",
          "output": {}
        }
      },
      "export_capability": [
        "json",
        "vc"
      ]
    }