← The evidence ledger
Evidence row 73050
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://darklyenergized.com/api/v1/x402/series/cb_usd_walcl
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- c42b59977c62435d8737a04b7b742b18434e17e853126b98764d676b3bece17c
- Leaf
- 0x0fca6265c18490de8317104aae567c212c61f858ca6b4c13044949c21ed39d07
What was observed
{
"endpoints": [
[
"x402",
"https://darklyenergized.com/api/v1/x402/series/cb_usd_walcl"
]
],
"name": "Darkly Energized",
"owner_address": "0x540b090cf83d74eaaf12faaacd1b8f481a1b5501",
"raw": {
"accepts": [
{
"amount": "50000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x540B090cF83D74eaAf12fAAacd1B8f481a1B5501",
"scheme": "exact"
}
],
"description": "Federal Reserve Total Assets (USD) ($0.05): Federal Reserve total assets in USD.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"from": "2026-01-01",
"limit": 500
},
"type": "http"
},
"output": {
"example": {
"data": {
"category": "Central Bank",
"data": [
{
"time": "2026-10-01",
"value": 1.23
}
],
"description": "Federal Reserve total assets in USD.",
"frequency": "weekly",
"id": "cb_usd_walcl",
"name": "Federal Reserve Total Assets (USD)",
"unit": "USD"
},
"meta": {
"count": 1,
"pagination": {
"cursor": "2026-10-01",
"hasMore": true,
"total": 7351
},
"timestamp": "2026-10-01T00:00:00.000Z"
}
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"after": {
"description": "Return points after this date (meta.pagination.cursor)",
"format": "date",
"type": "string"
},
"from": {
"description": "Start date (YYYY-MM-DD)",
"format": "date",
"type": "string"
},
"limit": {
"default": 500,
"description": "Most data points to return, oldest first",
"maximum": 10000,
"minimum": 1,
"type": "integer"
},
"summary": {
"default": false,
"description": "Return a statistical summary instead of the data points",
"type": "boolean"
},
"to": {
"description": "End date (YYYY-MM-DD)",
"format": "date",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"oneOf": [
{
"properties": {
"data": {
"properties": {
"category": {
"type": "string"
},
"data": {
"items": {
"properties": {
"time": {
"example": "2026-02-14",
"format": "date",
"type": "string"
},
"value": {
"description": "Null where the series has no value on that date (for example while a computed series warms up).",
"example": 1.23,
"type": [
"number",
"null"
]
}
},
"required": [
"time",
"value"
],
"type": "object"
},
"type": "array"
},
"description": {
"type": "string"
},
"frequency": {
"type": "string"
},
"id": {
"type": "string"
},
"name": {
"type": "string"
},
"unit": {
"type": "string"
}
},
"required": [
"id",
"name",
"description",
"category",
"frequency",
"data"
],
"type": "object"
},
"meta": {
"properties": {
"count": {
"type": "integer"
},
"dataRange": {
"properties": {
"from": {
"format": "date",
"type": "string"
},
"to": {
"format": "date",
"type": "string"
}
},
"type": "object"
},
"freshness": {
"properties": {
"frequency": {
"type": "string"
},
"isStale": {
"type": "boolean"
},
"lastObservation": {
"format": "date",
"type": "string"
}
},
"type": "object"
},
"pagination": {
"properties": {
"cursor": {
"type": "string"
},
"hasMore": {
"type": "boolean"
},
"total": {
"type": "integer"
}
},
"type": "object"
},
"timestamp": {
"format": "date-time",
"type": "string"
}
},
"required": [
"timestamp"
],
"type": "object"
}
},
"required": [
"data",
"meta"
],
"type": "object"
},
{
"properties": {
"data": {
"properties": {
"category": {
"type": "string"
},
"description": {
"type": "string"
},
"frequency": {
"type": "string"
},
"id": {
"type": "string"
},
"interpretation": {
"example": "Federal Reserve Total Assets is at 6.78T, up 0.3% this week. All Federal Reserve Banks: Total Assets.",
"type": "string"
},
"name": {
"type": "string"
},
"summary": {
"properties": {
"changes": {
"additionalProperties": {
"type": [
"number",
"null"
]
},
"description": "Percent changes for standard periods; null where the series has too little data for that period",
"example": {
"1M": -3.1,
"1W": 5.2,
"1Y": 15.3,
"3M": 12.4,
"6M": -8.7
},
"type": "object"
},
"count": {
"type": "integer"
},
"dateRange": {
"properties": {
"from": {
"format": "date",
"type": "string"
},
"to": {
"format": "date",
"type": "string"
}
},
"type": "object"
},
"latest": {
"properties": {
"time": {
"format": "date",
"type": "string"
},
"value": {
"type": [
"number",
"null"
]
}
},
"type": "object"
},
"range": {
"properties": {
"avg": {
"type": [
"number",
"null"
]
},
"max": {
"type": [
"number",
"null"
]
},
"min": {
"type": [
"number",
"null"
]
}
},
"type": "object"
}
},
"required": [
"latest",
"changes",
"range",
"count",
"dateRange"
],
"type": "object"
},
"unit": {
"type": "string"
}
},
"required": [
"id",
"name",
"description",
"summary",
"interpretation"
],
"type": "object"
},
"meta": {
"properties": {
"count": {
"type": "integer"
},
"dataRange": {
"properties": {
"from": {
"format": "date",
"type": "string"
},
"to": {
"format": "date",
"type": "string"
}
},
"type": "object"
},
"freshness": {
"properties": {
"frequency": {
"type": "string"
},
"isStale": {
"type": "boolean"
},
"lastObservation": {
"format": "date",
"type": "string"
}
},
"type": "object"
},
"pagination": {
"properties": {
"cursor": {
"type": "string"
},
"hasMore": {
"type": "boolean"
},
"total": {
"type": "integer"
}
},
"type": "object"
},
"timestamp": {
"format": "date-time",
"type": "string"
}
},
"required": [
"timestamp"
],
"type": "object"
}
},
"required": [
"data",
"meta"
],
"type": "object"
}
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1792074112/bazaar-icons/4f30b35f87c39f8e.png",
"lastUpdated": "2026-10-15T14:28:27.371Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-15T14:28:27.257Z"
},
"resource": "https://darklyenergized.com/api/v1/x402/series/cb_usd_walcl",
"serviceName": "Darkly Energized",
"tags": [
"central-banks",
"liquidity",
"macro",
"balance-sheets",
"usd"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Federal Reserve Total Assets (USD) ($0.05): Federal Reserve total assets in USD."
}What the leaf hashes
{"body":"c42b59977c62435d8737a04b7b742b18434e17e853126b98764d676b3bece17c","id":73050,"kind":"listing","method":"baseline/1","observed_us":1793025486982913,"prev":null,"subject":"x402_bazaar:https://darklyenergized.com/api/v1/x402/series/cb_usd_walcl","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).
- 0x0fca6fe1cd6ec36066b3dafdb897ac4f36da8611e90b28c430814379cbf1f14d
- 0x2fc9e5cd57ef8181aee2f22872261295c640bc505a8eafc249c730a5f3f478e6
- 0x4e0276f6b7d18f544d13eb87510013375d5a5785fc7cb602e2586cd054f30766
- 0x4b2ca9b608133752b69131b3052d48a4740fcd5cfda26377364ff509408c1caa
- 0x4cbc2bdc53bd34977e4a9d919085a805014c25aad912b4bfc45d510d1f0abc84
- 0x456854a9add92f38c2e9face447620035282d89e88c41cc84072f88c2c38aac9
- 0xac838fa5502d36fb1bb398e44a9c1017ac76eef2beff08a0eeb41c66096010cc
- 0x2423074b0617861d7f7a07402fbb995b4d63d6e461c4de29ce061c2a88e44067
- 0xeeb1536ed36503a475d22b778208730be783fead7ae39db6b659ec83bc5e89bb
- 0xaa43465b4a572fffa8395a77131320726863b79220ee24a33f803988e66ef177
- 0xb8387431db70826417a9bc1c445139bee1e0c5d359e4f9e2d85832f49bafe68b
- 0x129649b2ec48fbc611fb055c3f5627bda42692beb65d09e853d75bcda4e06239
- 0x294f7935f78a896b5f246a7c9a7ee1b023720acdb03fff3cd549c63479848ec9
- 0xb49e8c2564256e5322e375cb619d9ac70fd17c1d1eba9c991bba4cb6428f45cc
- 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
- 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
- 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae