← The evidence ledger
Evidence row 66424
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.grid-hub.app/v1/map/snapshot
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 31c576567b8335ae7f21cc5e47fd271ad29e8b4ea5d353c832e74f8bf6874852
- Leaf
- 0x6cd940dedd55d9a165f180e937ba6a7743472758ef976ca1928bc4689bb70cc6
What was observed
{
"endpoints": [
[
"x402",
"https://api.grid-hub.app/v1/map/snapshot"
]
],
"name": "GridHub Electricity Data",
"owner_address": "0x7ca97ae70e38736a94eea00427d50846bab978dd",
"raw": {
"accepts": [
{
"amount": "2000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"discoverable": true,
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payTo": "0x7ca97aE70E38736a94eEa00427D50846Bab978DD",
"scheme": "exact"
}
],
"description": "Current headline values (price, demand, and where published carbon intensity) for all 25 GridHub zones in one call. Use to compare or rank grids right now; rebuilt every 5 minutes. For one zone with context use /v1/brief/{zone}.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {},
"type": "http"
},
"output": {
"example": {
"generated": 1790496358,
"zones": {
"DE-LU": {
"attribution": "Data: ENTSO-E Transparency Platform",
"license": "CC-BY-4.0",
"metrics": {
"demand": {
"resolution": "15m",
"ts": 1790492400,
"unit": "MW",
"value": 43724.47645
},
"price": {
"resolution": "15m",
"ts": 1790631900,
"unit": "EUR/MWh",
"value": 192.3
}
},
"updated": 1790496275,
"zone": "DE-LU"
},
"GB": {
"attribution": "Supported by National Energy SO Open Data",
"license": "NESO-Open-Licence",
"metrics": {
"demand": {
"resolution": "30m",
"ts": 1790494200,
"unit": "MW",
"value": 20878
},
"price": {
"resolution": "30m",
"ts": 1790467200,
"unit": "GBP/MWh",
"value": 141.97
}
},
"updated": 1790496352,
"zone": "GB"
}
}
},
"type": "json"
}
},
"routeTemplate": "/v1/map/snapshot",
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"sample": {
"description": "Free truncated sample, no payment or credentials",
"enum": [
"true"
],
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"generated": {
"type": [
"number",
"null"
]
},
"zones": {
"additionalProperties": {
"properties": {
"attribution": {
"type": [
"string",
"null"
]
},
"license": {
"type": [
"string",
"null"
]
},
"metrics": {
"additionalProperties": {
"properties": {
"resolution": {
"type": [
"string",
"null"
]
},
"ts": {
"type": [
"number",
"null"
]
},
"unit": {
"type": [
"string",
"null"
]
},
"value": {
"type": [
"number",
"null"
]
}
},
"type": [
"object",
"null"
]
},
"type": [
"object",
"null"
]
},
"updated": {
"type": [
"number",
"null"
]
},
"zone": {
"type": [
"string",
"null"
]
}
},
"type": [
"object",
"null"
]
},
"type": [
"object",
"null"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-11T06:01:15.066Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-11T06:01:14.833Z"
},
"resource": "https://api.grid-hub.app/v1/map/snapshot",
"serviceName": "GridHub Electricity Data",
"tags": [
"electricity",
"energy",
"prices",
"grid",
"snapshot"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Current headline values (price, demand, and where published carbon intensity) for all 25 GridHub zones in one call. Use to compare or rank grids right now; rebuilt every 5 minutes. For one zone with context use /v1/brief/{zone}."
}What the leaf hashes
{"body":"31c576567b8335ae7f21cc5e47fd271ad29e8b4ea5d353c832e74f8bf6874852","id":66424,"kind":"listing","method":"baseline/1","observed_us":1793025460548652,"prev":null,"subject":"x402_bazaar:https://api.grid-hub.app/v1/map/snapshot","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
- 0x6cd9499cc56af3a9cde5d42b46d1995fc7a4aa5d066ef44554dc1e0f6d2c6f46
- 0xe6296c3a38c73987d987702f444a1568d23bfb10918fac0d1563a31a5bf54a8f
- 0x934d1b7904ff9f693dda5bccbbd60326c151d5587de86f0c83e6b15376c3a8f0
- 0x35ef7381b1eb46e316958db5d8e1067d18eb110f5749639ee89d52befbd76da1
- 0x2d8ff736f4b5be24a70fc965e8a49881ddedbdbeb0b6e5a4d0ce2ad2f30d28f5
- 0x433ca2824c37d17c8e1d1af8aa109358e05b461f0e225ee32278bec93acbc365
- 0xb48e6c56c7517d0b45f735ea8129c0461f3a0effba84e64bb12ddade1e134d8f
- 0xd2d3ed98518cebd52e53f506178b5281fa1b7bdec306738eac0ecdb8d1f816a8
- 0x14a9586f7a6c1eba5dc4e3d198697ab11dcb9502547bad9045b6b8f1d0dc156e
- 0x6d1ec73e7e908c75c9a03e6c7f6d0598ca0cfcd0c5fbb1cf6d796177fafa5410
- 0x82b0a13483194285c0c386d5ad47eb953493b28955a9a8e58da3a2e6e220ed30
- 0x929b3f59cbf01edbae456522161805dd51e098dc3a66d845508de46581bb953c
- 0x9dc4d6f64bc3c323d2c45a28209068cd473b6979bd632a0d694bf94d19bc39df
- 0xfc9b5a81a7a83a1c735a4fe64590beb9db14d2366f463161358af28c3ea9a81d
- 0xa2d436d488e3600b0e5c3e3ed9c9234cd52853c59830b786334fd0c4292d9f40
- 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae