Evidence row 2201192

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://text-similarity.x402tookit.com/ngram-overlap"
    ]
  ],
  "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": "Dice and Jaccard n-gram overlap of two texts by character or word, as sets and as multisets.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "a": "night",
              "b": "nacht",
              "n": 2
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-12T00:50:08.198Z",
              "degraded": false,
              "diceMultiset": 0.25,
              "diceSet": 0.25,
              "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": 4,
              "distinctB": 4,
              "gramsA": 4,
              "gramsB": 4,
              "ignoreCase": true,
              "jaccardMultiset": 0.1429,
              "jaccardSet": 0.1429,
              "n": 2,
              "notChecked": [
                "no padding with boundary markers: grams do not wrap the text edges",
                "meaning and word order beyond the gram window",
                "…1 more"
              ],
              "reasons": [
                "Set scores count each distinct gram once; multiset scores count repeats (Dice 2*shared/(grams A + grams B) with shared = sum of minimum counts; Jaccard = sum of minimums / sum of maximums). HIGH_OVERL…"
              ],
              "sharedDistinct": 1,
              "source": "computed locally (Sorensen 1948, Dice 1945, Jaccard 1901)",
              "summary": "char 2-grams: Dice 0.25, Jaccard 0.1429 on sets (1 shared of 4 and 4 distinct).",
              "unit": "char",
              "verdict": "PARTIAL_OVERLAP"
            },
            "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"
                    },
                    "n": {
                      "description": "Gram size 1 to 6 (default 2)",
                      "type": "integer"
                    },
                    "unit": {
                      "description": "char (default) or word grams",
                      "enum": [
                        "char",
                        "word"
                      ],
                      "type": "string"
                    }
                  },
                  "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"
                      ]
                    },
                    "diceMultiset": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "diceSet": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "distinctA": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "distinctB": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "gramsA": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "gramsB": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "ignoreCase": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "jaccardMultiset": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "jaccardSet": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "n": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "sharedDistinct": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "unit": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-02T04:09:04.847Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-02T04:09:04.69Z"
    },
    "resource": "https://text-similarity.x402tookit.com/ngram-overlap",
    "serviceName": "Text Similarity",
    "tags": [
      "text",
      "ngram",
      "dice",
      "jaccard",
      "similarity"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Dice and Jaccard n-gram overlap of two texts by character or word, as sets and as multisets."
}

What the leaf hashes

{"body":"1fa68d03141325ab2c4af556e7583bce4e1f8b97b7599302aa5799eb34937961","id":2201192,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646801235649,"prev":null,"subject":"x402_bazaar:https://text-similarity.x402tookit.com/ngram-overlap","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. 0xee209ba66524e0c4f9b0d1e2900846d3213b834b1adcda4629d18b73e64d8b7b
2. 0x1f66bc441e95c55db45931632e098e647a3b8d4a8397cc3abbbe81df83ad7fac
3. 0x85a0e2e48502f7746bc0bb7557cd791e190eef04c193443f7c475e68f2d17f1a
4. 0x8c1892638c6dc58e721027939879c06c0184236910e5615976d8e31810900a0f
5. 0x32ff16598268103eadfc792767700dfeb6ffdfb47535ae412d6626d2ca2a0c57
6. 0xbb8b87a3f214f6bd3834801f5e1e4369c393583e819b1db413028e1fcfac4b71
7. 0x8640ddb619da6cb5214068a18db25b50173da89e16ca7f21efcbbcd36efad1cd
8. 0xafe301d57e09d7f85f3b7621d0230f02c3cb84364edf54c3dedc8533ccb338af
9. 0x4a2b3d0d89788ce6fdb9f3e5fa6ab53afbd48fc4ba8360f4c8893ea08c6c8991
10. 0xd601d517ca4ee4e6d71c4d03ed97228900ea403ab4acd8ad71ff60deca2cd10f
11. 0x3e8e0a80d0d1e6892613c589815216d3f150228df9977c0e1624cab3ea6ebfdc
12. 0x81186f1d3fe58c5a37fc5a986c2e4440f453481f9e7d23a13c45f48adcec0bb2
13. 0x56222576ccb9eb1523f81d1cc3cad919b4c5bb42ade03a1c402e7008640051ad
14. 0xbb465466dac90179fd91fd4d3b6985e80736d1ab4662dc57a78b5e5098d6f074
15. 0xde6a8fd6590b70565baa6078cbc8add8d94950fe959ebaf8c3716adcdbd78aa8
16. 0x6dd7e4db65395e8670c7c2747d44fec79e03305934ef4746bf5dbca04ec6ec49
17. 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
18. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af