Anchor a SHA-256 digest (or a small document, which we hash for you) into the Animica data

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x5D17c40FD6b119dc6006C4Ab3C20a917FCaB2aCD",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "6958",
    "maxTimeoutSeconds": 60
  },
  {
    "scheme": "exact",
    "network": "animica:1",
    "payTo": "anim1zqpsmegc0qcvzjfukm89xs0zeu3eqyyyel7kelehuszvwfarqypky2gr946ga",
    "asset": "ANM",
    "amount": "82641748495",
    "maxTimeoutSeconds": 60
  }
]

{
  "animica": {
    "catalog": "https://animica.dev/.well-known/x402",
    "content_type": "application/json",
    "currency": "USDC",
    "description": "Anchor a SHA-256 digest (or a small document, which we hash for you) into the Animica data-availability layer and get back a commitment plus a Merkle inclusion proof anyone can check without trusting us. The record is erasure-coded across shards and committed to a Merkle root; the response carries the commitment, the leaf index and sibling path, and the chain head height and hash observed at the moment of anchoring. Verification is FREE and permanent at GET /x402/notarize/verify/{commitment} — a notarisation nobody can check would be worth nothing. Note precisely what this proves: the record is committed in this node's DA tree under the returned commitment, alongside the head it observed. That is not the same as a timestamp signed by the whole consensus set, and the response says so rather than blurring the two.",
    "documentation": "https://animica.dev/x402#product-notarize",
    "name": "Notarise a digest on-chain",
    "openapi": "https://animica.dev/x402/openapi.json",
    "price": "0.006958",
    "product": "notarize",
    "provider": "Animica",
    "terms": {
      "amount_atomic": "6958",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "chain_id": 8453,
      "network": "eip155:8453",
      "pay_to": "0x5D17c40FD6b119dc6006C4Ab3C20a917FCaB2aCD",
      "scheme": "exact"
    },
    "x402_version": 2
  },
  "bazaar": {
    "discoverable": true,
    "info": {
      "input": {
        "body": {
          "digest": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
          "memo": "notarize example"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "properties": {
            "body": {
              "properties": {
                "data": {
                  "description": "base64 document to hash and anchor (we store the digest and the memo, never your bytes, unless store_data is true)",
                  "type": "string"
                },
                "digest": {
                  "description": "a 32-byte SHA-256 digest as hex (with or without 0x). Supply this OR data.",
                  "type": "string"
                },
                "memo": {
                  "description": "optional label stored with the record, <=256 chars",
                  "type": "string"
                },
                "store_data": {
                  "description": "also store the supplied data itself, retrievable later (default false — by default only the digest is committed)",
                  "type": "boolean"
                }
              },
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {},
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  },
  "discovery": {
    "discoverable": true,
    "info": {
      "input": {
        "bodyFields": {
          "data": {
            "description": "base64 document to hash and anchor (we store the digest and the memo, never your bytes, unless store_data is true)",
            "required": false,
            "type": "string"
          },
          "digest": {
            "description": "a 32-byte SHA-256 digest as hex (with or without 0x). Supply this OR data.",
            "required": false,
            "type": "string"
          },
          "memo": {
            "description": "optional label stored with the record, <=256 chars",
            "required": false,
            "type": "string"
          },
          "store_data": {
            "description": "also store the supplied data itself, retrievable later (default false — by default only the digest is committed)",
            "required": false,
            "type": "boolean"
          }
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "description": "commitment, blob_id, namespace, digest, record (the exact bytes committed), proof {leaf_index, leaf_hash, siblings[], tree_height}, anchored_at {head_height, head_hash, observed_at}, verify_url, and what the proof does and does not establish",
        "type": "json"
      }
    }
  }
}

curl "https://animica.dev/x402/notarize"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://animica.dev/x402/notarize");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://animica.dev/x402/notarize")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header