Evidence row 120537

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/regex/test"
    ]
  ],
  "name": "Saylor Innovations Dev Tools",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:devkit:regex-test",
          "name": "USD Coin",
          "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:devkit:regex-test",
          "reference": "8r1SgUtaStTfxung23TGCqvEKRK7UazNJCNwLXgDnaH1",
          "session": "eyJhcnRpY2xlSWQiOiJkZXZraXQ6cmVnZXgtdGVzdCIsInJlZmVyZW5jZSI6IjhyMVNnVXRhU3RUZnh1bmcyM1RHQ3F2RUtSSzdVYXpOSkNOd0xYZ0RuYUgxIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIzNjM2NjgxNTR9.7IAOnc1Jbbl2AMLFmCKQDJng1QcLx_Zm_ECTtUG4FK4"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Regex tester - matches, capture groups and named groups for a JavaScript pattern against text",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "flags": "g",
              "pattern": "(\\d{4})-(\\d{2})-(\\d{2})",
              "text": "Released 2026-10-12, patched 2026-11-03."
            },
            "type": "http"
          },
          "output": {
            "example": {
              "engine": "ECMAScript (V8) regular expressions; the text is not stored",
              "flags": "g",
              "match_count": 2,
              "matched": true,
              "matches": [
                {
                  "captures": [
                    "2026",
                    "10",
                    "12"
                  ],
                  "end": 19,
                  "index": 9,
                  "match": "2026-10-12",
                  "named": null
                },
                {
                  "captures": [
                    "2026",
                    "11",
                    "03"
                  ],
                  "end": 39,
                  "index": 29,
                  "match": "2026-11-03",
                  "named": null
                }
              ],
              "pattern": "(\\d{4})-(\\d{2})-(\\d{2})",
              "text_length": 40,
              "truncated": false
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "POST",
                    "PUT",
                    "PATCH",
                    "DELETE",
                    "HEAD"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "flags": {
                      "default": "g",
                      "description": "Regex flags from g i m s u y d, each at most once (default g)",
                      "pattern": "^[gimsuyd]{0,7}$",
                      "type": "string"
                    },
                    "pattern": {
                      "description": "JavaScript regular expression source without slashes, max 500 characters",
                      "examples": [
                        "(\\d{4})-(\\d{2})-(\\d{2})",
                        "\\b[A-Z][a-z]+\\b"
                      ],
                      "maxLength": 500,
                      "type": "string"
                    },
                    "text": {
                      "description": "Text to search, max 5,000 characters",
                      "maxLength": 5000,
                      "type": "string"
                    }
                  },
                  "required": [
                    "pattern",
                    "text"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "checked_at": {
                      "description": "Time the check was run (UTC)",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "engine": {
                      "description": "Engine or model that produced the result",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "flags": {
                      "description": "Flags that were applied",
                      "type": "string"
                    },
                    "match_count": {
                      "description": "Total matches found (before truncation)",
                      "type": "number"
                    },
                    "matched": {
                      "description": "True when at least one match was found",
                      "type": "boolean"
                    },
                    "matches": {
                      "description": "Up to 100 matches in order",
                      "items": {
                        "properties": {
                          "captures": {
                            "description": "Numbered capture groups, null when unmatched",
                            "items": {
                              "type": [
                                "string",
                                "null"
                              ]
                            },
                            "type": "array"
                          },
                          "end": {
                            "description": "End offset (exclusive)",
                            "type": "number"
                          },
                          "index": {
                            "description": "Start offset in the input",
                            "type": "number"
                          },
                          "match": {
                            "description": "The matched text",
                            "type": "string"
                          },
                          "named": {
                            "description": "Named capture groups, or null",
                            "type": [
                              "object",
                              "null"
                            ]
                          }
                        },
                        "type": "object"
                      },
                      "type": "array"
                    },
                    "pattern": {
                      "description": "The pattern that was tested",
                      "type": "string"
                    },
                    "text_length": {
                      "description": "Text length",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "truncated": {
                      "description": "True when more than 100 matches were found",
                      "type": "boolean"
                    }
                  },
                  "required": [
                    "pattern",
                    "matched",
                    "match_count",
                    "matches"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "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/v1790235422/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-18T22:45:48.203Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-18T22:45:48.014Z"
    },
    "resource": "https://saylorinnovations.com/api/regex/test",
    "serviceName": "Saylor Innovations Dev Tools",
    "tags": [
      "regex",
      "regular expression",
      "pattern matching",
      "capture groups",
      "developer tools"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Regex tester - matches, capture groups and named groups for a JavaScript pattern against text"
}

What the leaf hashes

{"body":"357fd608beb73d49f45727c864f6313afb38d02d7cac356812f73a2978c398fb","id":120537,"kind":"listing","method":"baseline/1","observed_us":1793025618203684,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/regex/test","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. 0x0c92b157a8a3dbc15483ffe401c0f4acc15dc09b2087fd7ce89ae2f5d0d2cc98
2. 0x90f7ec8db3eff92f5a3de4515b16e5f64e561d4dc83a6a1ece5dd93632c86371
3. 0x96cef5ede03b774803c6b29a85566da92557823b3c5e57db76ca934e9547d501
4. 0x6e37e35340f13f029483ff026b82898c2581082002539fefd026639af2716203
5. 0x3172832110063e2bac956f9e4264db37a6dc0b9ef6f44483922fcc6d82f2b688
6. 0x36656823041f5561cb082affde5ee965cc262a7741080a79caabc5f9681ffeac
7. 0x987fb7da99e2f1bc7a9372539bff346dbfccaa99e8eb42e7f5dc5d513e961102
8. 0x25a61c9b6fd1a5b6a279ffd25f45121262f66fec4dff658ca9f3817b2ab8ba2e
9. 0x129f73a337baa96ceb94e1a7ffee4d71964bd465bd366e92667f98088d3ac037
10. 0x3c4894f4b32e18391502aac10c1c4092f71b1b7995859ea31b24350027233ca9
11. 0x1dd760089997f06dc5264f791d622a6e7eaf78f6daa715333a752d033cdb2e03
12. 0x362683225b724b8d2d652a95968c57a6f4199ed4f2ad60900fc3603492f17520
13. 0x5aefcf9e3d86e125861c0d490079969110eea8fc901ec61531bba10bb58258a1
14. 0xa96bb9408ce00a0d40ddaba8736257dfce76d5478b131d69db1afdf8a824312b
15. 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae