Evidence row 73517

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://distribution.openverbs.com/v1/t"
    ]
  ],
  "name": "Student's t distribution",
  "owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
  "raw": {
    "accepts": [
      {
        "amount": "4000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
        "scheme": "exact"
      }
    ],
    "description": "Student's t distribution with df degrees of freedom (> 0). `function` selects the density (pdf), cumulative distribution (cdf) or quantile / inverse-CDF.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "df": 1,
              "function": "pdf",
              "x": 1
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "df": {
                      "description": "Degrees of freedom ν > 0.",
                      "exclusiveMinimum": 0,
                      "type": "number"
                    },
                    "function": {
                      "enum": [
                        "pdf",
                        "cdf",
                        "quantile"
                      ],
                      "type": "string"
                    },
                    "x": {
                      "description": "Evaluation point: the variate for pdf/pmf/cdf, or the probability p ∈ (0,1) for quantile.",
                      "type": "number"
                    }
                  },
                  "required": [
                    "function",
                    "x",
                    "df"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-02T11:05:50.763Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-02T11:05:50.481Z"
    },
    "resource": "https://distribution.openverbs.com/v1/t",
    "serviceName": "Student's t distribution",
    "tags": [
      "student t distribution",
      "t distribution cdf",
      "t distribution quantile",
      "t test probability",
      "degrees of freedom distribution"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Student's t distribution with df degrees of freedom (> 0). `function` selects the density (pdf), cumulative distribution (cdf) or quantile / inverse-CDF."
}

What the leaf hashes

{"body":"4c4adf1d1b2028c58ac23f1c3c81289d5e6cd099e0b727bf44f9214415462ee7","id":73517,"kind":"listing","method":"baseline/1","observed_us":1793025487727566,"prev":null,"subject":"x402_bazaar:https://distribution.openverbs.com/v1/t","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. 0xee6870147b9d9518019fa1eedc0641ae65215c6587a803df3d000a1bcba8d3f7
2. 0x672d7f94142c03d0a3664b4d6393aea311b4b93de14750873846ae3019009a03
3. 0xd42cae16d871c8be793295b6e8f6d131858cea6d11bb51333d830099e249fd50
4. 0x9648fbd926049a40946f32a0ab16825c4475757652742d7c611e80f3fb2d7b50
5. 0x56a396c581035c61d70b7e6cde91bb81ca6bb6e5b2112642eeaf588b149c1d8f
6. 0xa831ec351a5666999cadb129f577ef6f74e3fd3f2619c5ac32b04d9c6eff8c51
7. 0x9f2ce29388c3fdb144d1d7bc033bfa63f433cba80c7fad594381a9aaa426e05d
8. 0xfa0c63a97410343c5394a7c177246c11ba1e1aab2b11c567c830beeac4c9fcc7
9. 0x7084cd3d864c3a9e0b71070dc7e40ee89972541dec82ca743206a05c94a6830d
10. 0x369a54d4fb4b5d5efccd93cfab5ea92ec0db3c689c151271b86dbcfa3a3a2a8f
11. 0x31325ab4dbdfc029b65672f927dfb6f0b046d1c4c19b63eb548ad58c295af08c
12. 0xe158f09cdbfb4f7be1bfd45fce3afcad32c2b3bb2fc2e181dadc193bbf194bfc
13. 0x746e9e5b6765727b6b96f41204cc115b0302259f6c67be0cf0efbf245601d500
14. 0x614d844c9e0509d9f9e63697aa2935555bce5f13695a8dc0047aa9e9898d70b3
15. 0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae