Evidence row 2202125

What was observed

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      "x402",
      "https://chemistry-calc.x402tookit.com/bond-polarity"
    ]
  ],
  "name": "Chemistry Calculators",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
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        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
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        "scheme": "exact"
      },
      {
        "amount": "20000",
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        "extra": {
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        "scheme": "exact"
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        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "Bond type between two elements from the Pauling electronegativity difference: nonpolar covalent, polar covalent or ionic.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "a": "Na",
              "b": "Cl"
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                "symbol": "Na"
              },
              "asOf": "2026-10-11T08:45:38.155Z",
              "b": {
                "electronegativity": 3.16,
                "symbol": "Cl"
              },
              "bondType": "ionic",
              "degraded": false,
              "difference": 2.23,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "moreElectronegative": "Cl",
              "notChecked": [
                "real bonding: ionic and covalent character is a spectrum and the cut-offs (0.4 and 1.7) are textbook conventions",
                "metallic bonding between two metals",
                "…2 more"
              ],
              "reasons": [
                "Textbook cut-offs on the Pauling scale: under 0.4 nonpolar covalent, 0.4 to 1.7 polar covalent, over 1.7 ionic.",
                "A convention, not a sharp physical boundary."
              ],
              "source": "computed locally",
              "summary": "Na (0.93) and Cl (3.16): difference 2.23, ionic; Cl pulls electrons harder (partial negative).",
              "verdict": "IONIC"
            },
            "type": "json"
          }
        },
        "schema": {
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                      "type": "string"
                    }
                  },
                  "required": [
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                  "type": "object"
                },
                "type": {
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                }
              },
              "required": [
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                "method"
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              "type": "object"
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            "output": {
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                            "number"
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                        "symbol": {
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                            "string"
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                      },
                      "type": [
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                        "object"
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                    },
                    "bondType": {
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                    },
                    "degraded": {
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                        "null"
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                    },
                    "difference": {
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                    },
                    "disclaimer": {
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                    },
                    "moreElectronegative": {
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                    },
                    "notChecked": {
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              "required": [
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              "type": "object"
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          },
          "required": [
            "input"
          ],
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    },
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    "quality": {
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      "l30DaysUniquePayers": 2,
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    "serviceName": "Chemistry Calculators",
    "tags": [
      "chemistry",
      "bond",
      "electronegativity",
      "polarity"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Bond type between two elements from the Pauling electronegativity difference: nonpolar covalent, polar covalent or ionic."
}

What the leaf hashes

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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. 0x801d2189d81e1edeaabb7cd1b3f047241f85b608e169735312f4e2bf2d09815e
2. 0x71498c88fd54762c3eda050d92fd4f2c43f8605c8063eca239e9794b792e10d8
3. 0x5779169f4e575e276dd18415f9d4be27f86475a829c1ab054039d7303e9391ef
4. 0x43fe6c97011ac8df3847a358de729ebf1403763718a5fc9226d5260f930b7245
5. 0x41c7145427dd778d71e6791bfd95af539b846d4750fe4d0b02679e63b5b2e57d
6. 0x6506078d1cb2c5df9a065297695a98b73c4af954814e4a60c14eccbb59cbaa16
7. 0x672b59ab2a5dd48b0d8d7de0d28a054485b82e3baa88d8d4c3a91a101bceac7c
8. 0x255e832714f988fc3ddb16a6e3a104fcfea1ec9b903328fc5afed09b92b5fe4d
9. 0xdc9829be6a14b02f14c1042ef8695f96af47b3981c467bffbb786606974c2e5d
10. 0x7acd09c58d01a756e6c20b6c271949667ad8bd764fafff4eef2cb4940f4b1b9e
11. 0x50bf2f84de7b53e5933e244004dac0d447346914337103a7d8bac4bfb694c60f
12. 0x786080c17714171e1c289cf0aed18e1ab976b18ce2fac2a219a07d49aadcb6c7
13. 0x6a06852e71057f53bcc6c658511dcfcda03ac93f8dd86e79a4db42c8e85677b9
14. 0x5d40473873ebe898bcca4e49df524bf4345695f06abe3579f4bdb7b306b863f8
15. 0x46991481c678139203ebc3c532867ce1643c09ddc33966c4fb48bb7f033ab22f
16. 0x3b89dd05634a82075204d3c671f613081ddfd9df739c64c0a8f39081bdfa32c7
17. 0x1805ef693fbdb2c23fcb61616f830408ca89bec1dc5b68ee47a770ffc0b9760a
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af