Evidence row 123633

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://utils.kagurazaka.dev/v1/regex"
    ]
  ],
  "name": "x402 Utils",
  "owner_address": "0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8",
        "scheme": "exact"
      }
    ],
    "description": "Run a regular expression on a text: every match with its position and capture groups (named too), and the text with a replacement applied. RE2 syntax, which runs in linear time (no lookaround or backreferences).",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "pattern": "(?P<year>\\d{4})-(\\d{2})",
              "replacement": "$2/$1",
              "text": "from 2026-10 to 2027-01"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "count": 2,
              "matched": true,
              "matches": [
                {
                  "groups": [
                    "2026",
                    "10"
                  ],
                  "index": 5,
                  "match": "2026-10",
                  "named": {
                    "year": "2026"
                  }
                }
              ],
              "replaced": "from 10/2026 to 01/2027"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "flags": {
                      "description": "any of i (ignore case), m (multiline), s (dot matches newline)",
                      "type": "string"
                    },
                    "pattern": {
                      "description": "the pattern (up to 2000 characters)",
                      "type": "string"
                    },
                    "replacement": {
                      "description": "optional replacement, $1 for groups",
                      "type": "string"
                    },
                    "text": {
                      "description": "the text (up to 1 MB)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "pattern",
                    "text"
                  ]
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "count": {},
                    "matched": {},
                    "matches": {},
                    "replaced": {}
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-25T08:26:39.836Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-25T08:26:39.745Z"
    },
    "resource": "https://utils.kagurazaka.dev/v1/regex",
    "serviceName": "x402 Utils",
    "tags": [
      "regex",
      "text",
      "developer-tools"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Run a regular expression on a text: every match with its position and capture groups (named too), and the text with a replacement applied. RE2 syntax, which runs in linear time (no lookaround or backreferences)."
}

What the leaf hashes

{"body":"4c19c96045ada7a96a4aad4dfca8a92f649e231684acdaeecc8f366e66349a3c","id":123633,"kind":"listing","method":"baseline/1","observed_us":1793025623523299,"prev":null,"subject":"x402_bazaar:https://utils.kagurazaka.dev/v1/regex","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. 0xeef8dc479b81210de3153a0e2126c7478e55a5da5e8d7a90e7439f3edb25be5c
2. 0xb11cee7bf3547efb2b4015809c2a408e5609885bbdad0072ce7b5cb62c24a3ff
3. 0xe1e5171db6c72ac18365e2bcd62c79f39b695d5541653f66421b50494e2b9b0f
4. 0x1023ac78dffda57524de72d71dda481a63641a51fea65a0a08c98c5901878110
5. 0x8d4df96807b7fd09e74a9d68e67316ec2a2eb57bb1ec96d8a06c41233c91d03d
6. 0x6fd61d045c1ac393e207372922bcb799764814efe0ddb11d64783091d39fb1b1
7. 0xd247db0c9d746831976cb67ea59e2769c615a49d55f9323eee90e6693af27a54
8. 0xa71c8fa81e37015f24511da8317cb24219669a6e8e781be37502e188a6c12692
9. 0x50febeddc5b4552a313a9cd5c0a118ec1c55e21a42b2ea7c98ecf12ac8161e8e
10. 0x6a342165fe5c2fa8b0f8cd8b99ab88e01f9e0a758f16ba9193ba775d71446fbb
11. 0xd1f02e907670bf2f4c72056210a7d4ee252934850293a927f852acd3952f44a4
12. 0xb0cc0b4ce5a68e83d3e3e55b0387f828adf6f5eb6cfa666d75f6e16ed9d89c1f
13. 0x746e9e5b6765727b6b96f41204cc115b0302259f6c67be0cf0efbf245601d500
14. 0x614d844c9e0509d9f9e63697aa2935555bce5f13695a8dc0047aa9e9898d70b3
15. 0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae