← The evidence ledger
Evidence row 2201913
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://exoplanets-nasa.x402tookit.com/nearest-planets
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- a2119d179edfcf4ad6752b3aca9cf3c37dcc22c1d8b186eda6384a6cb49fd57b
- Leaf
- 0x2d5de4d77960c7dc5ea571375da0ddbd2e628f46c228c2959267ebd0749b5263
What was observed
{
"endpoints": [
[
"x402",
"https://exoplanets-nasa.x402tookit.com/nearest-planets"
]
],
"name": "NASA Exoplanets",
"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": "Closest known exoplanets to the Sun in light-years, optional size filter, with star type, orbit and habitable-zone position.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"limit": 10,
"maxDistancePc": 8,
"maxRadiusEarth": 1.6
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T08:48:45.178Z",
"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.",
"maxDistancePc": 8,
"notChecked": [
"planets with no archive distance (they cannot be ranked)",
"undiscovered planets: nearby planets are mostly found by radial velocity, which favours large close-in planets",
"…2 more"
],
"planets": [
{
"discoveryMethod": "Radial Velocity",
"discoveryYear": 2016,
"distanceLightYears": 4.244,
"distanceParsecs": 1.30119,
"equilibriumTempK": 218,
"habitableZonePosition": "INSIDE_CONSERVATIVE_ZONE",
"host": "Proxima Cen",
"insolationEarth": 0.641,
"massEarth": 1.055,
"massIsMinimum": true,
"name": "Proxima Cen b",
"orbitalPeriodDays": 11.18465,
"radiusEarth": 1.02,
"semiMajorAxisAu": 0.04848,
"sizeClass": "Earth-size",
"starSpectralType": "M5.5 V"
},
{
"discoveryMethod": "Radial Velocity",
"discoveryYear": 2025,
"distanceLightYears": 4.244,
"distanceParsecs": 1.30119,
"equilibriumTempK": 282,
"habitableZonePosition": "TOO_HOT_INSIDE_OPTIMISTIC_INNER_EDGE",
"host": "Proxima Cen",
"insolationEarth": 1.814,
"massEarth": 0.26,
"massIsMinimum": true,
"name": "Proxima Cen d",
"orbitalPeriodDays": 5.12338,
"radiusEarth": 0.692,
"semiMajorAxisAu": 0.02881,
"sizeClass": "sub-Earth",
"starSpectralType": "M5.5 V"
}
],
"reasons": [
"Ranked by the host star's distance; planets of one star share a distance.",
"31 more match but are not listed."
],
"returned": 10,
"source": "NASA Exoplanet Archive (Caltech/IPAC)",
"sourceUrl": "https://exoplanetarchive.ipac.caltech.edu",
"summary": "41 confirmed planet(s) within 8 pc (26.1 light-years) with radius 0 to 1.6 Earth radii; nearest: Proxima Cen b at 4.244 light-years. 1 of the 10 listed orbit inside the conservative habitable zone.",
"totalMatches": 41,
"verdict": "PLANETS_LISTED"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
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"additionalProperties": false,
"properties": {
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"queryParams": {
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"type": "integer"
},
"maxDistancePc": {
"description": "Search out to this many parsecs, 1 to 25 (default 10; 1 pc = 3.26 light-years)",
"type": "number"
},
"maxRadiusEarth": {
"description": "Only planets at most this many Earth radii, 0.1 to 30 (use 1.6 for likely rocky)",
"type": "number"
},
"minRadiusEarth": {
"description": "Only planets at least this many Earth radii, 0.1 to 30",
"type": "number"
}
},
"required": [],
"type": "object"
},
"type": {
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"type": "string"
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},
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},
"degraded": {
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"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"maxDistancePc": {
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"number"
]
},
"notChecked": {
"items": {
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"type": [
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"null"
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},
"planets": {
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"null",
"string"
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},
"discoveryYear": {
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},
"distanceLightYears": {
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"null",
"number"
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},
"distanceParsecs": {
"type": [
"null",
"number"
]
},
"equilibriumTempK": {
"type": [
"null",
"number"
]
},
"habitableZonePosition": {
"type": [
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"string"
]
},
"host": {
"type": [
"null",
"string"
]
},
"insolationEarth": {
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"null",
"number"
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},
"massEarth": {
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"null",
"number"
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"massIsMinimum": {
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"null"
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},
"name": {
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},
"orbitalPeriodDays": {
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"number"
]
},
"radiusEarth": {
"type": [
"null",
"number"
]
},
"semiMajorAxisAu": {
"type": [
"null",
"number"
]
},
"sizeClass": {
"type": [
"null",
"string"
]
},
"starSpectralType": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
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},
"type": [
"array",
"null"
]
},
"returned": {
"type": [
"null",
"number"
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},
"source": {
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"null",
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},
"sourceUrl": {
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"string"
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},
"summary": {
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"string"
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},
"totalMatches": {
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"number"
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},
"verdict": {
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"string"
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}
},
"type": "object"
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},
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},
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}
},
"lastUpdated": "2026-11-01T22:53:19.237Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T22:53:19.046Z"
},
"resource": "https://exoplanets-nasa.x402tookit.com/nearest-planets",
"serviceName": "NASA Exoplanets",
"tags": [
"exoplanet",
"nasa",
"nearby",
"astronomy",
"star"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Closest known exoplanets to the Sun in light-years, optional size filter, with star type, orbit and habitable-zone position."
}What the leaf hashes
{"body":"a2119d179edfcf4ad6752b3aca9cf3c37dcc22c1d8b186eda6384a6cb49fd57b","id":2201913,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646810177202,"prev":null,"subject":"x402_bazaar:https://exoplanets-nasa.x402tookit.com/nearest-planets","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).
- 0x2d5df9bd71c6145419fcf745d398018b80bfbda3b44645d558db3f56cbc42964
- 0xa3e3da5218c15a6bd1c9749e3416a4b79a169f67bb4097c8bc22626d3db84df3
- 0xe79ed9fe6069ef651cb33c74001d03079b12f6786b7253bb106264d6ec01850f
- 0x2e11cd4f9d6e325a0d5925a8e0daf3c6c06170c7e3ce8414ea4e7be3ba9dd4ad
- 0x9bc67727fc139688490a0eb05def66c602ed93fcb6d4e7e446000107b76c8286
- 0x1782de5ef3ab8cd3dfd03d12579b5df58bf65dcb85f2dfb9529cc6849204b260
- 0x08c62a1287463c6e91569b497f18275dbdf4adc2b143f01f32222226e92c45b9
- 0x64e3d4ec6a3d8f36f3610ef2b2df26e96f6ff52900fe5512f65cba1023c29fca
- 0x7c83940d83952bd9e614b31a9053639c4d0e082743a59721349618d0c4fac0b7
- 0xb54eacc3a5c5af7cd7feb0a89f7679f144fb1f8195e09c1198dfdd3e26e63e5f
- 0xf841c7290e13c2f19f6233e2749504226882012e0f94bbd35c3af3acb819872c
- 0x26d664b9a64503faf3758ae1668259d0b90ae74690be3dfcdbce789134ec2455
- 0xf1aa667ce80c3cfa851957b2154c374229551d079e3666ba4d1ea5e32bfbe79b
- 0x037a66c2ea899586d58b52761f6b950a97cda22bb80294e40013ebea171a684f
- 0x9cb76be6423133397c3da69f801d6af35dcce77b458aa17bd796c877ed7bc8fd
- 0xd42916b5c6441e9c8d91ff91715af1489cb83dee26d47e7da107caa4d2a68b65
- 0xa20b9be86af7d690e040c9060a373b2fc5498edf3432f43c26f74fa2febc1e9a
- 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af