← The evidence ledger
Evidence row 2201220
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://satellite-catalog.x402tookit.com/decay-risk
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- e0fcbd691e2ead24a3265addee5ecdd5fe2a8fd8cffebdf29679f9cb1c3958d1
- Leaf
- 0xbc61e808d0d7e40ac9d80ae6e47eed7d2fcb6161681001fa0bd20ff066cdedd5
What was observed
{
"endpoints": [
[
"x402",
"https://satellite-catalog.x402tookit.com/decay-risk"
]
],
"name": "Satellite Catalog",
"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "30000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"transactionVersions": [
0
]
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "Screen a CelesTrak group for low-perigee objects (default under 250 km). A heuristic flag, not a re-entry prediction.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"group": "stations",
"perigee_km": 250
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-21T00:37:07.364Z",
"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.",
"flagged": [
{
"apogeeAltKm": 215.9,
"bstar": 0.001116767,
"epochAgeDays": 0.7,
"meanMotionDot": 0.03059098,
"name": "UITMSAT-2",
"noradId": 67686,
"perigeeAltKm": 202.5,
"periodMin": 88.7
}
],
"flaggedCount": 1,
"flaggedTruncated": false,
"group": "stations",
"lowestPerigee": {
"apogeeAltKm": 215.9,
"bstar": 0.001116767,
"epochAgeDays": 0.7,
"meanMotionDot": 0.03059098,
"name": "UITMSAT-2",
"noradId": 67686,
"perigeeAltKm": 202.5,
"periodMin": 88.7
},
"notChecked": [
"an actual re-entry date or probability: this is a perigee threshold, not a decay model",
"solar activity, drag coefficient, mass or attitude, which drive real decay",
"…2 more"
],
"objectsChecked": 21,
"reasons": [
"Screening heuristic only, not a prediction: objects with perigee below about 250 km usually have days to weeks of life left at typical solar activity, but that depends on drag, solar flux and the obje…"
],
"source": "CelesTrak GP data (group query); perigee computed from mean motion and eccentricity",
"sourceUrl": "https://celestrak.org/NORAD/elements/",
"summary": "1 of 21 objects in stations have a perigee below 250 km; the lowest is UITMSAT-2 at 202.5 km.",
"thresholdKm": 250,
"verdict": "LOW_PERIGEE_FOUND"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"group": {
"description": "CelesTrak group, e.g. stations, starlink, weather, last-30-days",
"type": "string"
},
"perigee_km": {
"description": "Flag perigee below this altitude, 120 to 600 km (default 250)",
"type": "integer"
}
},
"required": [
"group"
],
"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"
]
},
"flagged": {
"items": {
"properties": {
"apogeeAltKm": {
"type": [
"null",
"number"
]
},
"bstar": {
"type": [
"null",
"number"
]
},
"epochAgeDays": {
"type": [
"null",
"number"
]
},
"meanMotionDot": {
"type": [
"null",
"number"
]
},
"name": {
"type": [
"null",
"string"
]
},
"noradId": {
"type": [
"null",
"number"
]
},
"perigeeAltKm": {
"type": [
"null",
"number"
]
},
"periodMin": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"flaggedCount": {
"type": [
"null",
"number"
]
},
"flaggedTruncated": {
"type": [
"boolean",
"null"
]
},
"group": {
"type": [
"null",
"string"
]
},
"lowestPerigee": {
"properties": {
"apogeeAltKm": {
"type": [
"null",
"number"
]
},
"bstar": {
"type": [
"null",
"number"
]
},
"epochAgeDays": {
"type": [
"null",
"number"
]
},
"meanMotionDot": {
"type": [
"null",
"number"
]
},
"name": {
"type": [
"null",
"string"
]
},
"noradId": {
"type": [
"null",
"number"
]
},
"perigeeAltKm": {
"type": [
"null",
"number"
]
},
"periodMin": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"objectsChecked": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"sourceUrl": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"thresholdKm": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-02T04:08:05.154Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-02T04:08:04.901Z"
},
"resource": "https://satellite-catalog.x402tookit.com/decay-risk",
"serviceName": "Satellite Catalog",
"tags": [
"satellites",
"decay",
"reentry",
"screening"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Screen a CelesTrak group for low-perigee objects (default under 250 km). A heuristic flag, not a re-entry prediction."
}What the leaf hashes
{"body":"e0fcbd691e2ead24a3265addee5ecdd5fe2a8fd8cffebdf29679f9cb1c3958d1","id":2201220,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646801321761,"prev":null,"subject":"x402_bazaar:https://satellite-catalog.x402tookit.com/decay-risk","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).
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- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af