{
  "x402Version": 2,
  "id": 7700,
  "slug": "7700",
  "resource": "https://fractalai.net.co/api/x402/attest-decision",
  "description": "Pay-per-Attestation: an AI agent pays to seal its own decision (input hash, output, model, timestamp) in FractalAI's post-quantum L1 — Dilithium-2 (NIST FIPS 204) signed, Black-Box chained, on-chain anchored (VAID-1). Returns a re-verifiable receipt. Built for EU AI Act Art.12 record-keeping. x402-native.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "50000",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "50000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "body": {
        "agent_id": "agent-42",
        "input": "ctx",
        "output": "decision"
      },
      "bodyType": "json",
      "description": "Pay-per-Attestation: an AI agent pays to seal its own decision (input hash, output, model, timestamp) in FractalAI's post-quantum L1 — Dilithium-2 (NIST FIPS 204) signed, Black-Box chained, on-chain anchored (VAID-1). Returns a re-verifiable receipt. Built for EU AI Act Art.12 record-keeping. x402-native.",
      "info": {
        "input": {
          "body": {
            "agent_id": "agent-42",
            "input": "ctx",
            "output": "decision"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "example": {
            "algorithm": "ml-dsa-65",
            "attestation_hash": "0x…",
            "permalink": "https://fractalai.net.co/attestation/0x…",
            "signature": "BASE64_ML_DSA65"
          },
          "type": "json"
        }
      },
      "method": "POST",
      "output": {
        "example": {
          "algorithm": "ml-dsa-65",
          "attestation_hash": "0x…",
          "permalink": "https://fractalai.net.co/attestation/0x…",
          "signature": "BASE64_ML_DSA65"
        },
        "schema": {
          "properties": {
            "algorithm": {
              "description": "ml-dsa-65 (the served signature algorithm).",
              "type": "string"
            },
            "attestation_hash": {
              "description": "On-chain (VAID-1) attestation hash — re-verifiable proof the decision was sealed.",
              "type": "string"
            },
            "entry_hash": {
              "description": "Black Box entry hash: sha256 of the chained, canonical decision content.",
              "type": "string"
            },
            "entry_public_key": {
              "description": "Base64 Dilithium-2 public key that verifies entry_signature.",
              "type": "string"
            },
            "entry_signature": {
              "description": "Base64 Dilithium-2 (NIST FIPS 204) signature over the Black-Box entry hash — the chained on-chain-anchored seal.",
              "type": "string"
            },
            "input_hash": {
              "description": "sha256 of the declared input.",
              "type": "string"
            },
            "output_hash": {
              "description": "sha256 of the declared output.",
              "type": "string"
            },
            "payment": {
              "description": "Settlement receipt (scheme, network, asset, txHash, payer, settled).",
              "type": "object"
            },
            "permalink": {
              "description": "Permalink to the on-chain Dilithium-2 anchor (VAID-1), when the L1 anchor succeeds.",
              "type": "string"
            },
            "prev_hash": {
              "description": "Hash of the previous Black Box entry this one is chained to (tamper-evident order).",
              "type": "string"
            },
            "public_key": {
              "description": "Base64 ML-DSA-65 public key (1952 bytes) that verifies the served signature.",
              "type": "string"
            },
            "seq": {
              "description": "Append-only sequence number of this decision in the agent Black Box.",
              "type": "number"
            },
            "signature": {
              "description": "Base64 ML-DSA-65 / Dilithium-3 (NIST FIPS 204) SERVED signature (3309 bytes) over the EXACT bytes echoed in `signed_message` = FRACTALAI-x402-served-v1\\nx402-attest-decision\\n<sha256(canonical decision message)> (route-separated, 3 lines). Verify offline: ml_dsa65.verify(b64(signature), utf8(signed_message), b64(public_key)).",
              "type": "string"
            },
            "signed_message": {
              "description": "The EXACT UTF-8 bytes the served signature covers (FRACTALAI-x402-served-v1\\nx402-attest-decision\\n<sha256(canonical)>). Pass verbatim to ml_dsa65.verify.",
              "type": "string"
            }
          },
          "required": [
            "entry_hash",
            "input_hash",
            "output_hash",
            "signature",
            "public_key"
          ],
          "type": "object"
        },
        "type": "json"
      },
      "route_key": "POST /api/x402/attest-decision",
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "type": "object"
              },
              "bodyType": {
                "enum": [
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                  "form-data",
                  "text"
                ],
                "type": "string"
              },
              "headers": {
                "additionalProperties": {
                  "type": "string"
                },
                "type": "object"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "queryParams": {
                "additionalProperties": {
                  "type": "string"
                },
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      },
      "serviceName": "FractalAI Notary",
      "tags": [
        "ai-provenance",
        "decision",
        "audit",
        "eu-ai-act",
        "on-chain"
      ],
      "type": "http"
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "fractalai.net.co",
  "lastUpdated": "2026-09-15T15:46:14.337Z",
  "quality": {
    "calls30d": 1,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-15T15:46:13.905Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "fractalai.net.co",
    "manifest_name": "fractalai.net.co",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}