Evidence row 121565

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://space.halowerk.com/v1/orbit-decay"
    ]
  ],
  "name": "space.halowerk.com/v1/orbit-decay",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "4000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "asset": "USDC",
          "assetTransferMethod": "eip3009",
          "eip712Domain": {
            "chainId": 8453,
            "name": "USD Coin",
            "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "version": "2"
          },
          "name": "USD Coin",
          "network_name": "Base Mainnet",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "recipient": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "scheme": "exact"
      }
    ],
    "description": "Uses da/dt = -rho×sqrt(mu×a)/ballistic_coefficient for a circular orbit, holds density and ballistic coefficient constant, and linearly projects altitude over a bounded horizon. Real density changes rapidly with altitude and solar activity; the result is not a lifetime prediction or maneuver plan.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "altitude_km": 410,
              "atmospheric_density_kg_m3": 4e-12,
              "ballistic_coefficient_kg_m2": 120,
              "horizon_days": 30,
              "minimum_altitude_km": 180
            },
            "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": {
                    "altitude_km": {
                      "maximum": 2000,
                      "minimum": 100,
                      "type": "number"
                    },
                    "atmospheric_density_kg_m3": {
                      "description": "Caller-supplied density at the modeled altitude.",
                      "maximum": 1,
                      "minimum": 0,
                      "type": "number"
                    },
                    "ballistic_coefficient_kg_m2": {
                      "description": "Mass divided by drag coefficient and reference area.",
                      "maximum": 1000000000,
                      "minimum": 0.000001,
                      "type": "number"
                    },
                    "horizon_days": {
                      "maximum": 36500,
                      "minimum": 0,
                      "type": "number"
                    },
                    "minimum_altitude_km": {
                      "maximum": 2000,
                      "minimum": 0,
                      "type": "number"
                    }
                  },
                  "required": [
                    "altitude_km",
                    "ballistic_coefficient_kg_m2",
                    "atmospheric_density_kg_m3",
                    "horizon_days",
                    "minimum_altitude_km"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T05:40:27.887Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-08T05:40:27.444Z"
    },
    "resource": "https://space.halowerk.com/v1/orbit-decay",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Uses da/dt = -rho×sqrt(mu×a)/ballistic_coefficient for a circular orbit, holds density and ballistic coefficient constant, and linearly projects altitude over a bounded horizon. Real density changes rapidly with altitude and solar activity; the result is not a lifetime prediction or maneuver plan."
}

What the leaf hashes

{"body":"c66f06927578b40d98e7a7e70bf56a0fab6df543b5bfe1bc76edb1935de2da64","id":121565,"kind":"listing","method":"baseline/1","observed_us":1793025620077125,"prev":null,"subject":"x402_bazaar:https://space.halowerk.com/v1/orbit-decay","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. 0xf6bc3a82346fe5e45308868bcdfb70d28441f413d640d4ff82a2f6467a8e9a7a
2. 0xf16415ac4d93bb122de150592103dfbcc36bea4795a670a6b71c14a584cf3eda
3. 0xf3e2f4b2aec77507b402a487272845738608ce0692f96fd6bf5deeeeb4fd0605
4. 0x2ab624850eb49a3faf716f2de14e5bfc1c357cf021510b7aad4c6e7137d2e8d9
5. 0x827089c92ac6161d3b4e2caaa01c99e07cd19ad18cc83614daf38ed351e2b1c5
6. 0x0bf89ab07e8c3e19e1e07e33160a90f8f64f11e1fc48ba232ab8577944a267cc
7. 0x7de332611c2ecf66cbae6d47efd045f0f3c682f46aea499e9cb21bb101dabfc5
8. 0x9b11c481a0e88d2635c69ef2742a0865450efcdc279a7649107713d94b0e9c5a
9. 0x44982429bc4cac168c83025519db3b3f237c3366371304152a69cac496ff6262
10. 0xf5e8ef3ab5f9c23f542cbe0c046fd1eee75e680d15d275dfceddbf77d8c87937
11. 0xd987c6ca981b8dd0b1b11d115372fd199a82de229e1bc3db5a7a430cbc5575be
12. 0x4eeaa4735423e7633e0aaa6154804920315f945b1e4ceabd29282ec021cce244
13. 0x79695e4356ea25a2b58265a824698704cd2c743099ce2dca9e41384ce8f1a8c5
14. 0xd769d41500075835c3b2f9184d223699fb983fd05c29fbcb44d964abc7ee380d
15. 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae