Roundhouse AI

FractalAI Provenance

Pay-per-Seal: one post-quantum (Dilithium-2) provenance seal + a self-contained ML-DSA-65/Dilithium-3 (NIST FIPS 204) signature — drand-timestamped and on-chain-anchored — over a dataset/training/content hash. EU AI Act (Art. 10/50/53) provenance for autonomous agents, x402-native.

DataLiveeip155:8453Exactvia cdp
https://fractalai.net.co/api/x402/seal
ProvenanceDatasetTimestampC2paDrand
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 10 snapshots so far.
$1.10
Verified settled volume
53 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-15 15:22Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xC13789e82661635d9Cea38a53A0390CF9939ef4f

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required",
  "price": "$0.05",
  "usage": "POST { content | content_hash, kind?, issuer?, anchor? }. First call → 402 with `accepts` (facilitator EIP-3009 gasless, or pay-first txHash). Facilitator-native: retry with X-PAYMENT = base64(JSON(exact-scheme payload with a signed EIP-3009 authorization)). Fallback: retry with X-PAYMENT = base64(JSON({ txHash })). Returns a drand-timestamped, on-chain-anchored, Dilithium-2 provenance seal. FREE re-verification: GET ?seal=<JSON>[&content_hash=<hex>].",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "decimals": 6,
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f",
      "amount": "50000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USDC",
        "decimals": 6,
        "settlement": "txHash",
        "instructions": "Facilitator-less: send exactly `amount` USDC to `payTo` on Base, then retry with PAYMENT-SIGNATURE = base64(JSON({ txHash })) (X-PAYMENT also accepted)."
      },
      "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f",
      "amount": "50000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "service": "FractalAI x402 Pay-per-Seal — post-quantum provenance seals for autonomous agents (dataset / training / AI content)",
  "resource": {
    "url": "https://fractalai.net.co/api/x402/seal",
    "tags": [
      "provenance",
      "dataset",
      "timestamp",
      "c2pa",
      "drand"
    ],
    "mimeType": "application/json",
    "description": "Pay-per-Seal: one post-quantum (Dilithium-2) provenance seal + a self-contained ML-DSA-65/Dilithium-3 (NIST FIPS 204) signature — drand-timestamped and on-chain-anchored — over a dataset/training/content hash. EU AI Act (Art. 10/50/53) provenance for autonomous agents, x402-native.",
    "serviceName": "FractalAI Provenance"
  },
  "extensions": {
    "bazaar": {
      "body": {
        "kind": "dataset",
        "content_hash": "sha256hex"
      },
      "info": {
        "input": {
          "body": {
            "kind": "dataset",
            "content_hash": "sha256hex"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "seal_id": "…",
            "permalink": "https://fractalai.net.co/attestation/0x…",
            "attestation_hash": "0x…",
            "served_signature": {
              "algorithm": "ml-dsa-65"
            }
          }
        }
      },
      "tags": [
        "provenance",
        "dataset",
        "timestamp",
        "c2pa",
        "drand"
      ],
      "type": "http",
      "method": "POST",
      "output": {
        "type": "json",
        "schema": {
          "type": "object",
          "required": [
            "seal"
          ],
          "properties": {
            "seal": {
              "type": "object",
              "description": "The re-verifiable provenance seal: { version, content_hash, drand_round, drand_randomness, sealed_at, algorithm, signature (base64 Dilithium-2), public_key }."
            },
            "anchor": {
              "type": "object",
              "description": "On-chain anchor receipt (attestation_hash, block_number, permalink) or a note if anchoring was unavailable. Advisory — the seal is valid without it. The anchor is Dilithium-2 (ML-DSA-44), bound to the node."
            },
            "payment": {
              "type": "object",
              "description": "Settlement receipt (scheme, network, asset, txHash, payer, settled)."
            },
            "verify_drand_at": {
              "type": "string",
              "description": "URL to independently re-check the drand round on drand.sh."
            },
            "served_signature": {
              "type": "object",
              "description": "Self-contained, OFFLINE-verifiable Dilithium-3 / ML-DSA-65 (NIST FIPS 204) signature over the canonical seal bytes: { algorithm: \"ml-dsa-65\", algorithm_label, digest (sha256 hex signed), signature (base64 ML-DSA-65, 3309 bytes), public_key (base64, 1952 bytes), signed_message (the EXACT UTF-8 bytes signed = \"FRACTALAI-x402-served-v1\\nx402-seal\\n<digest>\", route-separated, 3 lines) }. Additive — verify with ml_dsa65.verify(b64(signature), utf8(signed_message), b64(public_key)); pass signed_message verbatim, do not reconstruct it."
            }
          }
        },
        "example": {
          "seal_id": "…",
          "permalink": "https://fractalai.net.co/attestation/0x…",
          "attestation_hash": "0x…",
          "served_signature": {
            "algorithm": "ml-dsa-65"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object"
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "headers": {
                "type": "object",
                "additionalProperties": {
                  "type": "string"
                }
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "additionalProperties": {
                  "type": "string"
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "bodyType": "json",
      "route_key": "POST /api/x402/seal",
      "description": "Pay-per-Seal: one post-quantum (Dilithium-2) provenance seal + a self-contained ML-DSA-65/Dilithium-3 (NIST FIPS 204) signature — drand-timestamped and on-chain-anchored — over a dataset/training/content hash. EU AI Act (Art. 10/50/53) provenance for autonomous agents, x402-native.",
      "serviceName": "FractalAI Provenance"
    }
  },
  "x402Version": 2,
  "honest_scope": "Proves this exact dataset/training/content hash EXISTED no later than the drand round, was not altered since, and was signed by this server's post-quantum (Dilithium-2, NIST FIPS 204) key. It does NOT prove authorship, originality, nor the quality/truthfulness/lawfulness of the content — it is a provenance SEAL, not an audit. Dilithium-2 is resistant to known classical & quantum attacks, not \"unbreakable\"."
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.05USDC≈ $0.05 USD
on Base · exact scheme

Pay 0.05 USDC on Base to 0xC137…9ef4f. The signed payment is good for 5 minutes.

Paid to
0xC137…9ef4f
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
50000 smallest units
0.05USDC≈ $0.05 USD
on Base · exact scheme

Pay 0.05 USDC on Base to 0xC137…9ef4f. The signed payment is good for 5 minutes.

Paid to
0xC137…9ef4f
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
50000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "decimals": 6,
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USDC",
      "decimals": 6,
      "settlement": "txHash",
      "instructions": "Facilitator-less: send exactly `amount` USDC to `payTo` on Base, then retry with PAYMENT-SIGNATURE = base64(JSON({ txHash })) (X-PAYMENT also accepted)."
    },
    "payTo": "0xC13789e82661635d9Cea38a53A0390CF9939ef4f",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "body": {
      "kind": "dataset",
      "content_hash": "sha256hex"
    },
    "info": {
      "input": {
        "body": {
          "kind": "dataset",
          "content_hash": "sha256hex"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "seal_id": "…",
          "permalink": "https://fractalai.net.co/attestation/0x…",
          "attestation_hash": "0x…",
          "served_signature": {
            "algorithm": "ml-dsa-65"
          }
        }
      }
    },
    "tags": [
      "provenance",
      "dataset",
      "timestamp",
      "c2pa",
      "drand"
    ],
    "type": "http",
    "method": "POST",
    "output": {
      "type": "json",
      "schema": {
        "type": "object",
        "required": [
          "seal"
        ],
        "properties": {
          "seal": {
            "type": "object",
            "description": "The re-verifiable provenance seal: { version, content_hash, drand_round, drand_randomness, sealed_at, algorithm, signature (base64 Dilithium-2), public_key }."
          },
          "anchor": {
            "type": "object",
            "description": "On-chain anchor receipt (attestation_hash, block_number, permalink) or a note if anchoring was unavailable. Advisory — the seal is valid without it. The anchor is Dilithium-2 (ML-DSA-44), bound to the node."
          },
          "payment": {
            "type": "object",
            "description": "Settlement receipt (scheme, network, asset, txHash, payer, settled)."
          },
          "verify_drand_at": {
            "type": "string",
            "description": "URL to independently re-check the drand round on drand.sh."
          },
          "served_signature": {
            "type": "object",
            "description": "Self-contained, OFFLINE-verifiable Dilithium-3 / ML-DSA-65 (NIST FIPS 204) signature over the canonical seal bytes: { algorithm: \"ml-dsa-65\", algorithm_label, digest (sha256 hex signed), signature (base64 ML-DSA-65, 3309 bytes), public_key (base64, 1952 bytes), signed_message (the EXACT UTF-8 bytes signed = \"FRACTALAI-x402-served-v1\\nx402-seal\\n<digest>\", route-separated, 3 lines) }. Additive — verify with ml_dsa65.verify(b64(signature), utf8(signed_message), b64(public_key)); pass signed_message verbatim, do not reconstruct it."
          }
        }
      },
      "example": {
        "seal_id": "…",
        "permalink": "https://fractalai.net.co/attestation/0x…",
        "attestation_hash": "0x…",
        "served_signature": {
          "algorithm": "ml-dsa-65"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object"
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "headers": {
              "type": "object",
              "additionalProperties": {
                "type": "string"
              }
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "additionalProperties": {
                "type": "string"
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    },
    "bodyType": "json",
    "route_key": "POST /api/x402/seal",
    "description": "Pay-per-Seal: one post-quantum (Dilithium-2) provenance seal + a self-contained ML-DSA-65/Dilithium-3 (NIST FIPS 204) signature — drand-timestamped and on-chain-anchored — over a dataset/training/content hash. EU AI Act (Art. 10/50/53) provenance for autonomous agents, x402-native.",
    "serviceName": "FractalAI Provenance"
  }
}

Provenance

Seen in the source catalog
2026-09-15 15:22Z
Last indexed by Roundhouse
2026-09-25 18:10Z
Last enriched (probe, favicon, geo)
2026-09-15 19:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 402
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 10 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service FractalAI Provenance and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=FractalAI%20Provenance'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://fractalai.net.co/api/x402/seal, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.