Evidence row 2201194

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://text-similarity.x402tookit.com/lcs"
    ]
  ],
  "name": "Text Similarity",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "transactionVersions": [
            0
          ]
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "Longest common subsequence and longest common substring of two texts, with their lengths and a 0 to 1 ratio.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "a": "AGGTAB",
              "b": "GXTXAYB"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-12T00:50:07.672Z",
              "degraded": false,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "ignoreCase": false,
              "lengthA": 6,
              "lengthB": 7,
              "notChecked": [
                "when several longest answers tie, only one is returned (the earliest in the first text for the substring)",
                "meaning: shared characters are not shared ideas",
                "…1 more"
              ],
              "ratio": 0.5714,
              "reasons": [
                "Ratio is subsequence length divided by the longer text's length."
              ],
              "source": "computed locally (classic dynamic programming)",
              "subsequence": "GTAB",
              "subsequenceLength": 4,
              "substring": "A",
              "substringLength": 1,
              "substringStartA": 0,
              "substringStartB": 4,
              "summary": "Longest common subsequence 4 (\"GTAB\"), longest common substring 1 (\"A\").",
              "verdict": "SHARED"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "a": {
                      "description": "First text, up to 2000 characters",
                      "type": "string"
                    },
                    "b": {
                      "description": "Second text, up to 2000 characters",
                      "type": "string"
                    },
                    "ignoreCase": {
                      "description": "true to compare case-insensitively (default false)",
                      "type": "boolean"
                    }
                  },
                  "required": [
                    "a",
                    "b"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "ignoreCase": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "lengthA": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "lengthB": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "ratio": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "subsequence": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "subsequenceLength": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "substring": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "substringLength": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "substringStartA": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "substringStartB": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-02T04:08:59.885Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-02T04:08:59.744Z"
    },
    "resource": "https://text-similarity.x402tookit.com/lcs",
    "serviceName": "Text Similarity",
    "tags": [
      "text",
      "lcs",
      "subsequence",
      "substring",
      "similarity"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Longest common subsequence and longest common substring of two texts, with their lengths and a 0 to 1 ratio."
}

What the leaf hashes

{"body":"3f6b6dabffce9cfac5eddf57d715f1770d7bf57598555570111352b00f0d65d0","id":2201194,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646801241364,"prev":null,"subject":"x402_bazaar:https://text-similarity.x402tookit.com/lcs","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0xa791198ff891d158b72c5c704a7c196ec5a18c825e98d1de87e8de4d848fac7f
2. 0xf12e9f62b11a29fcaffad6e8cea76935ef6b02270085e286e2824c583da8a1be
3. 0x386f46f33a1e04451b868ac2e3f85fc2874d2503dcc738ef13f339a2e541d531
4. 0xdfd0452c620aa33d0ce97c8957ee5e4eb60253f07559f2fa8b2eb195f56c39fe
5. 0x57c53e51e2965beb4c180d2f5e7228d964f1bf49c07dd4875e61f450e0bf1940
6. 0xd11458eedae381d18498890fca97ee6abc3f7b5eeabeab9657875137d023fd66
7. 0x6f806afeb45326a40733d3c635351e48dea32bc793af844cda90fe36763a4bdf
8. 0xbf731c5b087ae428b8ea4c440c69ecb3a1ebdfa71c5ff446f79b21baca7abd11
9. 0x812cd86632eb603114167a928765cff28b32586ed847d2abdf75dd33997ef4fa
10. 0x632e01af30bf48600dc240065072c2f7363326d8ef394581a2d9b79bf29f22a8
11. 0xf612792c76e2762a7c9a811eee99a08adac1c9d0c055bdb36e75aa9397664eb4
12. 0x40fd0f6dda83194fb5e17438b1c4dc895d08871eef37ae05317aee45785e29ac
13. 0xf7fc51348087e5c1e3d386772d38113ebc053fa2bb0a5e6728e5f86d0ac25db5
14. 0x7a6e52c5cebe3ec69d18cc200885d32108ba1be1b19f2da2ead8becbf3db3cb1
15. 0x7abf7290721a0b95be706db03c09de9df65bcba8e18ffe4616da43d9c31d6b0a
16. 0x7731256c7406f95d30aabe3bbcb574b72535b9c28e8eb3db363210761a28a6b9
17. 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af