Evidence row 2201199

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://text-similarity.x402tookit.com/cosine-tokens"
    ]
  ],
  "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": "Cosine similarity of the word-count vectors of two texts, with shared terms and vector norms.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "a": "the cat sat",
              "b": "the cat sat on the mat"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-12T00:50:06.339Z",
              "cosine": 0.8165,
              "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.",
              "distinctA": 3,
              "distinctB": 5,
              "dot": 4,
              "ignoreCase": true,
              "normA": 1.7321,
              "normB": 2.8284,
              "notChecked": [
                "no stop-word removal, stemming or IDF weighting: raw word counts only",
                "word order and meaning",
                "…1 more"
              ],
              "reasons": [
                "Cosine = dot product / (norm A * norm B) of word-count vectors. SIMILAR means 0.7 or more, a convenience band. Identical word counts in any order give 1."
              ],
              "sharedTerms": 3,
              "source": "computed locally (term-frequency cosine)",
              "summary": "Cosine 0.8165 over 3 shared distinct words (3 and 5 distinct).",
              "tokensA": 3,
              "tokensB": 6,
              "verdict": "SIMILAR"
            },
            "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 (default) lowercases both texts first",
                      "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"
                      ]
                    },
                    "cosine": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "distinctA": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "distinctB": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "dot": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "ignoreCase": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "normA": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "normB": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "sharedTerms": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "tokensA": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "tokensB": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-02T04:08:46.72Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-02T04:08:46.512Z"
    },
    "resource": "https://text-similarity.x402tookit.com/cosine-tokens",
    "serviceName": "Text Similarity",
    "tags": [
      "text",
      "cosine",
      "bag-of-words",
      "tokens",
      "similarity"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Cosine similarity of the word-count vectors of two texts, with shared terms and vector norms."
}

What the leaf hashes

{"body":"7061f2c0546801d072495751aa3b571c7cbc668ec9218aba0674f4526c814f11","id":2201199,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646801255662,"prev":null,"subject":"x402_bazaar:https://text-similarity.x402tookit.com/cosine-tokens","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. 0x536c8d966891042b79ded4c83b32030cc5034e8d1d6735d1d7a7f4e4a7d8c532
2. 0xe54146644bd70f3cc8b470ea139c1adf7f0c45b660c96497a5b3971218603e98
3. 0xcbb069ceefadce306a89f3d8289c41cb701a095e8dabd44214545d69c2d7286c
4. 0x20f8946368c5e8cfc63d0014f937c1ad6285c38e6699a30aa8a46b706530e10a
5. 0xf02a2cda51e26187b98ad72e6408ac51f6388b68539891282867f1ec67313f1a
6. 0x99a08c1bc4390652ac988d7117e8946f4f9be0758831320babddf625df79b9ff
7. 0xdbfe2e1e16582d20413d2974cdff3a22df1b183ba67bab39d9d0396e1a836471
8. 0x1d5bf3e68ae5b20c6feb0406f61db0a4dddbd29605209b556fae02026bcb7fa2
9. 0x287954d9c45a86d234b10b1fafbb0d5a98a65c2ea7fb158eaeb7ac0c9d3e91ec
10. 0x1b06b6bb904da35bb20a98cc337e6f6f1b7849933153c9d273a4e0d0a1728517
11. 0xe86129f34106e46ab2a3a4266a79c8d3f2f77e5d556cf49b9ac214800195e0c4
12. 0x72adf61d2802939b48d74a549823053f636277c76140db963cda7bbd192a3539
13. 0x1af6bd9d49aa04d9f41d673388facaaa9e6daacb0aa9aad0dcf31353556f6ee6
14. 0xa96ecfe7ab9f1788120ca262a1b69b7b258160df41b4041d36fcd211c95d26d9
15. 0x67c99d356de30f9cfab88af48fbaa18909ef230dd09947e84da060bc03aca929
16. 0x1068659ec8f2bcf26e4ad39786557a8c45d60e5ebba4fce2fb9962b2c9c59920
17. 0xf9973981f80219d4f00fa9186b40a8144accc0c9875572fb79eaea312a21a187
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af