Evidence row 2202009

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://data-calc.x402tookit.com/capacity-planning"
    ]
  ],
  "name": "Systems Capacity Calculators",
  "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": "Units needed for a peak load at a target utilisation plus N+k redundancy, utilisation after failures, and growth projection.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "capacityPerUnit": 800,
              "peakLoad": 5000,
              "spareUnits": 1,
              "targetUtilizationPercent": 70
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T20:19:38.922Z",
              "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.",
              "headroomPercentOverPeak": 60,
              "loadAtWhichTotalSaturates": 8000,
              "notChecked": [
                "whether capacityPerUnit was measured under realistic load (synthetic benchmarks overstate it)",
                "non-linear scaling: coordination, shared databases and caches mean 2x units rarely gives 2x capacity",
                "…2 more"
              ],
              "reasons": [
                "Units for load = ceil(peak / (capacity x target utilisation)); spares are added on top so a failure does not push the survivors over target.",
                "Check the post-failure utilisation: if it exceeds your latency knee (often 80 to 85%), add a spare."
              ],
              "source": "computed locally",
              "spareUnits": 1,
              "summary": "Peak 5000 at 800 per unit and a 70% utilisation target needs 9 units, 10 with 1 spare; after losing 1 unit utilisation is 69.44%.",
              "unitsForLoad": 9,
              "unitsTotal": 10,
              "usableCapacityPerUnit": 560,
              "utilizationAfterLosingOneUnitPercent": 69.44,
              "utilizationAfterLosingSparesPercent": 69.44,
              "utilizationAtTargetWithNeedOnlyPercent": 69.44,
              "utilizationNormalPercent": 62.5,
              "verdict": "RESILIENT"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "capacityPerUnit": {
                      "description": "Maximum load ONE unit (server, node, pod) handles in the same unit, measured at its limit",
                      "type": "number"
                    },
                    "growthPercentPerMonth": {
                      "description": "Compound monthly growth of the peak load for a projection (default 0)",
                      "type": "number"
                    },
                    "months": {
                      "description": "Projection horizon in months, 1 to 120 (default 12)",
                      "type": "integer"
                    },
                    "peakLoad": {
                      "description": "Peak load in any unit (requests/s, jobs/hour, GB/s), above 0",
                      "type": "number"
                    },
                    "spareUnits": {
                      "description": "Extra units kept so the cluster survives failures (N+k, default 1)",
                      "type": "integer"
                    },
                    "targetUtilizationPercent": {
                      "description": "Highest steady utilisation you will run at, 10 to 100 (default 70)",
                      "type": "number"
                    }
                  },
                  "required": [
                    "peakLoad",
                    "capacityPerUnit"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "headroomPercentOverPeak": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "loadAtWhichTotalSaturates": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "spareUnits": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "unitsForLoad": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "unitsTotal": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "usableCapacityPerUnit": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "utilizationAfterLosingOneUnitPercent": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "utilizationAfterLosingSparesPercent": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "utilizationAtTargetWithNeedOnlyPercent": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "utilizationNormalPercent": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:47:07.517Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:47:07.348Z"
    },
    "resource": "https://data-calc.x402tookit.com/capacity-planning",
    "serviceName": "Systems Capacity Calculators",
    "tags": [
      "capacity-planning",
      "redundancy",
      "utilization",
      "scaling"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Units needed for a peak load at a target utilisation plus N+k redundancy, utilisation after failures, and growth projection."
}

What the leaf hashes

{"body":"c777f1913d95d21fd10a8d58e3007eaec3aef3fd46a43e34c3cd41b43ada8d8f","id":2202009,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646811336191,"prev":null,"subject":"x402_bazaar:https://data-calc.x402tookit.com/capacity-planning","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. 0x4d8e8b5a605d42321e5a2e11af885cfafb6a80a751ea2081c7ed550aa65d1d3d
2. 0x0105407bbf149f0761f7ae9ebbc73d20aa8182f10f91ce3e71c1fbe0410c4cd4
3. 0x82088b5b4b24c61e5b36bc98dcef5ba09ca0d709bfad194206963b645c9f1fd4
4. 0x2f78630a9b5bbcb5cd678129bfdc10bfb02f793cf3ebfff5cad0a381d2ed1b98
5. 0xe13c3c8bebc41f4119be098092873a9258e449f3f2db3953bab03b6340a82885
6. 0x40914647af91ed586ca471bb440b87c33467b66fc3a41fa32ea1ce8847a0294d
7. 0xa5a2163e51836a93747de0b25646e057019a6c16c1f0b4c875793df19a1d87a0
8. 0x51767c2c8ad515af5b9325fcb3f69feb8d3ec12c6f7dbcfeae7ad449535e1e24
9. 0x60a264b1d7d51126bf8ac294f622f235d7505910cef990a9e6dc320dc79f970d
10. 0x3fe5c55a2621d0a1c6f0e1062b28be248856c23553b31bccc582813d06b6ee73
11. 0xd5a90644c0f94ae06fc12ccc920a6aa5194e367054cea3ae88cae25c31aa8c8a
12. 0x61b34ad045e6450b81b7a4502b2d97d0cc31cbac450cec30794ecaf30d1a78e3
13. 0xc2ea6f7cdcf0c6904201c0d186a72f2a6fa2d355f41deec0e55aad057d5b8897
14. 0xf01d425f0c05ac504062d9b471f06fbf10480b3526efb1ee77bb71aebd05f0de
15. 0x67c99d356de30f9cfab88af48fbaa18909ef230dd09947e84da060bc03aca929
16. 0x1068659ec8f2bcf26e4ad39786557a8c45d60e5ebba4fce2fb9962b2c9c59920
17. 0xf9973981f80219d4f00fa9186b40a8144accc0c9875572fb79eaea312a21a187
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af