addrbookFor publishers
← The evidence ledger

Evidence row 67361

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://api.mekler.ai/v1/images/qr/generate-code
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
24ccc2ee79fb6f592c61fd4e34952f045d8f3c8cc4b399302265d6b4a53d6dfa
Leaf
0x772aeaf086fda8a6ec6973e015f1ccaf3fc7968ee9f7a5c534b556c2c58d4a27

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.mekler.ai/v1/images/qr/generate-code"
    ]
  ],
  "name": "Mekler AI",
  "owner_address": "0xf6c6e2e530bb311c14a49c1a07c720fc232c07c5",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "meklerQuote": "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.da1a719d34b21e5eb5728eeb45e929197759041068fe9fe68f2f8bf9a9b548ae",
          "memo": "m:2hpxnTSyHl61co7rRekpGQ"
        },
        "maxTimeoutSeconds": 60,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "9mMDrHabSf73MPn1ANdANSmsNw2wKiqE7JZ7eD6EUSRc",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "meklerQuote": "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.0dfb493010f76fd0e3d61112a4cd32dc18eceb1fa3a40ac290ec744607090d06",
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0xF6c6E2e530bb311c14a49C1a07C720fc232c07c5",
        "scheme": "exact"
      }
    ],
    "description": "Generate a standards-based QR code from supplied UTF-8 text or a payment URI. Return SVG or PNG as base64 with dimensions, SHA-256, QR version and error-correction level. Maximum 1024 UTF-8 bytes, scale 1–8 and fixed four-module quiet zone. Encodes the supplied payload; does not validate a payment destination, execute payment or host an image.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "error_correction": "M",
              "format": "png",
              "request_id": "qr-generation-example-001",
              "scale": 4,
              "text": "https://mekler.ai/"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "byte_length": 252,
              "data": "iVBORw0KGgoAAAANSUhEUgAAAIQAAACEAQAAAAB5P74KAAAAw0lEQVR42u1W0QkCUQwLLpD9t8wGtclDQUEQ4+cVOWo/QpumucO8hXBVXisAOCBOohve45vK4jC/zZIUOCAJDZ20OEPNH3CWGNb9jEd6EPU7jteUKPfl4FMSDT/Wj6wfVjikBD/Y8aPoWVl/gaPVII6oS348muGgSj8LpD2M0Nz1s5O5GXZ61rENk9zdlz2D+VPrOb2wvq8Vj3Lw7b3bxgblvo5tnCFbH4t7qPbDpbnWjyU0ee1oWj90VzO1H15fBR8qd5tY9Osict9SAAAAAElFTkSuQmCC",
              "encoding": "base64",
              "error_correction": "M",
              "format": "png",
              "height": 132,
              "mime_type": "image/png",
              "payload_bytes": 18,
              "quiet_zone_modules": 4,
              "sha256": "c25a99d2a24dbe4f167e747c2af350ec7360c9630002aff31a5979b6cc665780",
              "status": "ok",
              "version": 2,
              "width": 132
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "error_correction": {
                      "default": "M",
                      "enum": [
                        "L",
                        "M",
                        "Q",
                        "H"
                      ],
                      "type": "string"
                    },
                    "format": {
                      "default": "svg",
                      "enum": [
                        "svg",
                        "png"
                      ],
                      "type": "string"
                    },
                    "request_id": {
                      "pattern": "^[A-Za-z0-9_-]{16,64}$",
                      "type": "string"
                    },
                    "scale": {
                      "default": 4,
                      "maximum": 8,
                      "minimum": 1,
                      "type": "integer"
                    },
                    "text": {
                      "maxLength": 1024,
                      "minLength": 1,
                      "type": "string"
                    }
                  },
                  "required": [
                    "text",
                    "request_id"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "additionalProperties": false,
                  "properties": {
                    "byte_length": {
                      "type": "integer"
                    },
                    "data": {
                      "type": "string"
                    },
                    "encoding": {
                      "type": "string"
                    },
                    "error_correction": {
                      "type": "string"
                    },
                    "format": {
                      "type": "string"
                    },
                    "height": {
                      "type": "integer"
                    },
                    "mime_type": {
                      "type": "string"
                    },
                    "payload_bytes": {
                      "type": "integer"
                    },
                    "quiet_zone_modules": {
                      "type": "integer"
                    },
                    "sha256": {
                      "type": "string"
                    },
                    "status": {
                      "type": "string"
                    },
                    "version": {
                      "type": "integer"
                    },
                    "width": {
                      "type": "integer"
                    }
                  },
                  "required": [
                    "status",
                    "format",
                    "mime_type",
                    "encoding",
                    "data",
                    "sha256",
                    "byte_length",
                    "width",
                    "height",
                    "version",
                    "error_correction",
                    "quiet_zone_modules",
                    "payload_bytes"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-19T18:35:08.399Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-19T18:35:08.037Z"
    },
    "resource": "https://api.mekler.ai/v1/images/qr/generate-code",
    "serviceName": "Mekler AI",
    "tags": [
      "Images",
      "QR codes",
      "Encoding"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Generate a standards-based QR code from supplied UTF-8 text or a payment URI. Return SVG or PNG as base64 with dimensions, SHA-256, QR version and error-correction level. Maximum 1024 UTF-8 bytes, scale 1–8 and fixed four-module quiet zone. Encodes the supplied payload; does not validate a payment destination, execute payment or host an image."
}

What the leaf hashes

{"body":"24ccc2ee79fb6f592c61fd4e34952f045d8f3c8cc4b399302265d6b4a53d6dfa","id":67361,"kind":"listing","method":"baseline/1","observed_us":1793025462644267,"prev":null,"subject":"x402_bazaar:https://api.mekler.ai/v1/images/qr/generate-code","subject_kind":"source_record"}

Proof

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

  1. 0x772acc9133ef5d0aa4c988eb761ba948d25c62a973877bd83ab038e02b0fd0be
  2. 0xf358a0ffee7ff1a1fad51277506c3b4ff39366c0722adf969b9d1cb2aadc51eb
  3. 0x174af649db387a11136de056eec5625b36e2d7937b9296784824c03a095754fb
  4. 0x67b0736fc593d388328a676043cbd7a162acb1c9df0220404b64ad083e77d19f
  5. 0x73180923f89ee2017d7d2ea1cf95a162aef145acf91e704482da6f475009621b
  6. 0xc4e55076791bbf3f15849b51728e55d0ff0d99a21507eda10d0af5806a4f4653
  7. 0x45614675ac83379c8a2ec4cee0ea87f584d497c661e41d58869baca31e1a860b
  8. 0x6c85e800b21bdbc298e7154a128e75b8a9aab031b1ca987504614da22538ad40
  9. 0xa60cb04f271a4bf19685fb57224cee257668e691285287d8827f8ab8edfb9129
  10. 0xb543a7014a7da7ab1677250ea2e4cf5246b237487bd67575741c51bad8f72af0
  11. 0x2b0f6f9a9d5201404fd0cd99316c4ea1c2b3853278de26cb244fc2433c8b6831
  12. 0x8fdfac9874f184de58b63efbdab0fc27674958d741146d02f58b04d3c559cabf
  13. 0xdef3cab0b4070d8ad7f4f91288da4881d19789f131b1b353621df79df04a0617
  14. 0xc4fe2177880ea1b0e82b6fe4c270090fd0fbe5af3a42a8cbf6a6ba2fa35625f6
  15. 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
  16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
  17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
  18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON