Evidence row 123901

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://voice.madebydevx.com/v1/ocr"
    ]
  ],
  "name": "DevX Voice",
  "owner_address": "0xe30c4544ec57ac44d8586eb49e49e267fc2d40db",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xe30c4544eC57ac44d8586eB49e49e267fc2d40DB",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xe30c4544eC57ac44d8586eB49e49e267fc2d40DB",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xe30c4544eC57ac44d8586eB49e49e267fc2d40DB",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9",
        "extra": {
          "name": "USD₮0",
          "version": "1"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xe30c4544eC57ac44d8586eB49e49e267fc2d40DB",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:43114",
        "payTo": "0xe30c4544eC57ac44d8586eB49e49e267fc2d40DB",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0x779Ded0c9e1022225f8E0630b35a9b54bE713736",
        "extra": {
          "name": "USD₮0",
          "version": "1"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:196",
        "payTo": "0xe30c4544eC57ac44d8586eB49e49e267fc2d40DB",
        "scheme": "exact"
      }
    ],
    "description": "OCR for agents: send an image URL or base64 (PNG, JPEG, WebP, GIF; up to 3 MB) and get the text it contains in reading order, as plain text or Markdown (tables, lists). Works on screenshots, receipts, invoices, signs and documents. $0.002 USDC per image on Base; images with no readable text are not charged. Gemma 4 vision. By DevX.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "image_url": "https://voice.madebydevx.com/samples/invoice.png"
            },
            "bodyType": "json",
            "discoverable": true,
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "operation_id": "3c2b1a09-8f7e-4d6c-9b5a-4e3d2c1b0a99",
              "payment": {
                "amount_raw": "2000",
                "network": "eip155:8453",
                "status": "paid",
                "tx_hash": "0x0000000000000000000000000000000000000000000000000000000000000000"
              },
              "result": {
                "characters": 35,
                "format": "text",
                "image": {
                  "bytes": 7868,
                  "mime": "image/png"
                },
                "lines": 2,
                "model": "gemma-4-26b-a4b-it",
                "text": "INVOICE #4021\nTotal due: 12.50 USDC",
                "truncated": false
              },
              "status": "paid"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "format": {
                      "description": "Output format (default text)",
                      "enum": [
                        "text",
                        "markdown"
                      ],
                      "type": "string"
                    },
                    "image_base64": {
                      "description": "Base64 image; a data: URI prefix is allowed",
                      "type": "string"
                    },
                    "image_url": {
                      "description": "Public http(s) URL of the image (max 3 MB)",
                      "type": "string"
                    },
                    "language_hint": {
                      "description": "Optional expected language",
                      "maxLength": 40,
                      "type": "string"
                    },
                    "requestKey": {
                      "description": "Optional idempotency key: the same payer + requestKey + input within 7 days returns the stored result without a second charge.",
                      "maxLength": 128,
                      "minLength": 8,
                      "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{7,127}$",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ],
                  "type": "string"
                },
                "discoverable": {
                  "type": "boolean"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "operation_id": {
                      "type": "string"
                    },
                    "payment": {
                      "type": "object"
                    },
                    "result": {
                      "type": "object"
                    },
                    "status": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "operation_id",
                    "status",
                    "result"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1792674330/bazaar-icons/e0e6fd42800bc2b7.png",
    "lastUpdated": "2026-10-24T15:38:02.107Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-24T15:38:01.915Z"
    },
    "resource": "https://voice.madebydevx.com/v1/ocr",
    "serviceName": "DevX Voice",
    "tags": [
      "ocr",
      "image-to-text",
      "text-extraction",
      "vision",
      "documents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "OCR for agents: send an image URL or base64 (PNG, JPEG, WebP, GIF; up to 3 MB) and get the text it contains in reading order, as plain text or Markdown (tables, lists). Works on screenshots, receipts, invoices, signs and documents. $0.002 USDC per image on Base; images with no readable text are not charged. Gemma 4 vision. By DevX."
}

What the leaf hashes

{"body":"3424823ad3cb3e17d038f65719dbdd37e1a5e1d3b0d00ffae474ebbb4de8e955","id":123901,"kind":"listing","method":"baseline/1","observed_us":1793025623847653,"prev":null,"subject":"x402_bazaar:https://voice.madebydevx.com/v1/ocr","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x7bfb7abba2987e1782f8293e4b02a2c566cb1970672b733abf84490146263f2e
2. 0xb433c6da5d78b8990ee88b6db70a0ed8fa4de10243a1f99310ca3732a19a1044
3. 0x9d5a178f5253906c761ff771356b69401f288e2f2cf8de350b2057ba01d3c192
4. 0xc4d25b7d82eac9f628aea9b5d3f3738d6d23fc92db91756004a7e4a69e5c56ad
5. 0xc36908f1dfcfe9af5ffaf50c2aa83aa50a3d352c4685a6fe170aa9a0a05f9584
6. 0x2b2de344682b7e27a5994a4a921dc4501496d1d5a39ef2abb4fe87b9ba1113b1
7. 0xc5ce060f58f4a093072f232a72d5605bc54a887da0e1455cc194b67a1c54aaf6
8. 0xc14dbe26f17f5dbc74f844d938d214286acb96bb37e05a3f32e7f4eb48a13404
9. 0xa3ae6abfe2623f21b3c91833ce5dc5008ff7d64e1c0d130ad93081e466ff531d
10. 0x0c2fac2a4320950bef314ab7fe7c8935c69ddf370144f7fc8c185fb2757cac53
11. 0x2c4bc324cca0a9cf9acc1b58f29ce72853140e0ac2b1e69e9b827dfe71904616
12. 0x779c77295186b32da6387dfb36d3a76522e7d713472a7cebed7c93529ccc4be6
13. 0x0bffb634300aa5609bddaa79e8d31d7cde36c0a5a4465472f809b9f5287e40d2
14. 0x7721d38652b6444b18e1193824e50490ade04851ce6221771f6e374c4527d80f
15. 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae