Evidence row 73516

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://distribution.openverbs.com/v1/poisson"
    ]
  ],
  "name": "Poisson 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": "Poisson distribution with rate `lambda` (> 0, ≤ 1e9). `function` selects the mass (pmf), cumulative distribution (cdf) or quantile / inverse-CDF.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "function": "pmf",
              "lambda": 1,
              "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": {
                    "function": {
                      "enum": [
                        "pmf",
                        "cdf",
                        "quantile"
                      ],
                      "type": "string"
                    },
                    "lambda": {
                      "description": "Rate λ > 0.",
                      "exclusiveMinimum": 0,
                      "type": "number"
                    },
                    "x": {
                      "description": "Count k (integer for pmf) for pmf/cdf, or the probability p ∈ (0,1) for quantile.",
                      "type": "number"
                    }
                  },
                  "required": [
                    "function",
                    "x",
                    "lambda"
                  ],
                  "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": "2026-10-02T02:02:39.759Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-02T02:02:39.5Z"
    },
    "resource": "https://distribution.openverbs.com/v1/poisson",
    "serviceName": "Poisson distribution",
    "tags": [
      "poisson distribution",
      "poisson pmf",
      "poisson cdf",
      "poisson quantile",
      "rate lambda probability"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Poisson distribution with rate `lambda` (> 0, ≤ 1e9). `function` selects the mass (pmf), cumulative distribution (cdf) or quantile / inverse-CDF."
}

What the leaf hashes

{"body":"89b7321483439e6b796e495ceca8db59403792cc0bf6c3ee380f005298fcf12f","id":73516,"kind":"listing","method":"baseline/1","observed_us":1793025487726065,"prev":null,"subject":"x402_bazaar:https://distribution.openverbs.com/v1/poisson","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. 0xc3f39c3f5d709c7d2127708e2dfc613796976435f6d50e12e15eace9abb1c806
2. 0x865dec181cc5eac7a98a0b7e8a5a7b31f486e3d5e07159746ccb0d2ccd9eeede
3. 0xd171a7f4c4b19561aa078f72be7212f4c25afe938b88404d0e86e2a5f8d5d729
4. 0x723fdbb362e64f7e10218b7b95e4b92cd99caae98a5affcf51951d2e5d794951
5. 0xd1d7c6081795ec80adf2e1fcdfcad5cb7d242970b307409daa9c57d55e69240a
6. 0xdb8a9196e1ea41463f213b5cbf792c2fcdc269bcf6d9cd5efda74b1043bc357d
7. 0x587676b668d749d1153470b4af0102118e7906b589d598b12f933e5738010dc9
8. 0x43ca5f2c71067cfc9b7d53c8472dc77c0f9a17d42d54f2a9ad57a505ceb49029
9. 0x96af53cab0b6484baa5b5de03c539cb87a76d8f71b3a639a422035419c9fbaf3
10. 0xdc850e305944c852a3843d2749ca3439ee04fdbf864b6a8660cc3fd8b5aced96
11. 0x2cd92a66ffb802d7ebc327d20fe07925be80289ee1c2910e6818dc40c67f2487
12. 0x63002f2569d43725bbf2d04d90ec9e6cf925c96b6dda5e7e220ecfbdd9c2444d
13. 0x641fba1f23ec69d96721e34ace1926954d835b9614cb5eae215a069c056399b8
14. 0xdbe2e8dd65ea1248b2936612538f18268abd5cf27ebdab3737694571ad496004
15. 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae