← The evidence ledger
Evidence row 2201916
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://exoplanets-nasa.x402tookit.com/habitable-zone
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- dbb09dce8f8ef6200481648b5c3eb9ce3bf1e5669bf58ea18e1db0999f32e0df
- Leaf
- 0x27fc87a9f9cb8d8cb2dfd34e2cb0247bb5230488bb11b035e915f66ea43f6768
What was observed
{
"endpoints": [
[
"x402",
"https://exoplanets-nasa.x402tookit.com/habitable-zone"
]
],
"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": "Habitable-zone edges in AU for a star from luminosity or radius, plus temperature (Kopparapu 2013), and where an orbit falls.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"luminositySolar": 1,
"orbitAu": 1,
"teffK": 5780
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T08:48:41.986Z",
"conservativeZoneAu": {
"inner": 0.9931,
"outer": 1.705
},
"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.",
"inFittedTemperatureRange": true,
"luminositySolar": 1,
"luminositySource": "given",
"method": "Kopparapu et al. 2013 (ApJ 765, 131): moist greenhouse to maximum greenhouse limits (conservative); recent Venus to early Mars limits (optimistic); distance = sqrt(L / S_eff(Teff))",
"notChecked": [
"planet properties: mass, atmosphere, albedo and the greenhouse effect set what the zone really is for a given planet",
"stellar activity, flares, tidal locking and the star's changing brightness over time",
"…2 more"
],
"optimisticZoneAu": {
"inner": 0.7505,
"outer": 1.774
},
"orbitAu": 1,
"orbitSource": "given",
"position": "INSIDE_CONSERVATIVE_ZONE",
"reasons": [
"Star temperature is inside the model's fitted range (2600 to 7200 K)."
],
"source": "computed locally",
"summary": "For L = 1 solar and Teff 5780 K, the conservative habitable zone is 0.993 to 1.71 au and the optimistic zone 0.751 to 1.77 au. An orbit at 1 au: inside conservative hz.",
"teffK": 5780,
"verdict": "INSIDE_CONSERVATIVE_HZ"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"luminositySolar": {
"description": "Star luminosity in solar units (give this, or radiusSolar)",
"type": "number"
},
"massSolar": {
"description": "Star mass in solar masses, used with periodDays",
"type": "number"
},
"orbitAu": {
"description": "Planet semi-major axis in AU, to place it against the zone",
"type": "number"
},
"periodDays": {
"description": "Orbital period in days (with massSolar, instead of orbitAu)",
"type": "number"
},
"radiusSolar": {
"description": "Star radius in solar radii (used with teffK when luminosity is not given)",
"type": "number"
},
"teffK": {
"description": "Star effective temperature in K, 2000 to 10000 (model fitted for 2600 to 7200)",
"type": "number"
}
},
"required": [
"teffK"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"conservativeZoneAu": {
"properties": {
"inner": {
"type": [
"null",
"number"
]
},
"outer": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"inFittedTemperatureRange": {
"type": [
"boolean",
"null"
]
},
"luminositySolar": {
"type": [
"null",
"number"
]
},
"luminositySource": {
"type": [
"null",
"string"
]
},
"method": {
"type": [
"null",
"string"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"optimisticZoneAu": {
"properties": {
"inner": {
"type": [
"null",
"number"
]
},
"outer": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"orbitAu": {
"type": [
"null",
"number"
]
},
"orbitSource": {
"type": [
"null",
"string"
]
},
"position": {
"type": [
"null",
"string"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"teffK": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:53:08.778Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T22:53:08.59Z"
},
"resource": "https://exoplanets-nasa.x402tookit.com/habitable-zone",
"serviceName": "NASA Exoplanets",
"tags": [
"habitable-zone",
"exoplanet",
"star",
"astronomy",
"calculator"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Habitable-zone edges in AU for a star from luminosity or radius, plus temperature (Kopparapu 2013), and where an orbit falls."
}What the leaf hashes
{"body":"dbb09dce8f8ef6200481648b5c3eb9ce3bf1e5669bf58ea18e1db0999f32e0df","id":2201916,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646810188045,"prev":null,"subject":"x402_bazaar:https://exoplanets-nasa.x402tookit.com/habitable-zone","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).
- 0x27fc8140c8adad689107c4f126c83b9a1d549ccece11d06d7293836c2bcf69e7
- 0x385708fc8f9650cac407dc15dfbca4bbbefc4e744ef61a841f9f409977b18c04
- 0xa367661195623fa7bc978b506dd18a868ef4549c44ab9969824b85b81b4fb5d0
- 0x7cc1f67cfc7ead47563dd2c11a9dece0313759f7333de077a926726a057c5129
- 0x204b7e65801b13381ace473269fdd5e48e2dccd96f8c818383e03c50c5444fcf
- 0xc05358d45ae06b8b04cf2a2f3167621e77dc6c0d05c944dcd85af8458a1549eb
- 0xaa6b4c96586223e379c187df7e7b6c41bdb2923278ead9bc2c278b6d3deca627
- 0x7fac7153513d3bb7484ed05fdf3d166cf6ec9414ca3b75e796a060716959d4d9
- 0x21a854a909d12869be81a2198923ba8ee39648314201e24151b12cdc49836ae8
- 0x60048d128f35d182690bce0dbfc8c6b0d66f79da360a18d15f1800c6c1e0934f
- 0xe1b8509e01d1532793b61f1dc718c65fb553f0a888aca1c23fcbe02c5333eab4
- 0x3a4530c387a03c52b7afbd39200548993215a4cb14f3e53ead9b1517fcfe0b2c
- 0x51e311ca2900bdc02d33f863997ecf605beee83455e2af17106fa126c029645d
- 0x8d443fc9063dd9f00f5f7476005a8915a8222f4611f5601e212bafbdbbdd6165
- 0x9cb76be6423133397c3da69f801d6af35dcce77b458aa17bd796c877ed7bc8fd
- 0xd42916b5c6441e9c8d91ff91715af1489cb83dee26d47e7da107caa4d2a68b65
- 0xa20b9be86af7d690e040c9060a373b2fc5498edf3432f43c26f74fa2febc1e9a
- 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af