← The evidence ledger
Evidence row 63912
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://agentshelf.syntexa.ch/v1/base-block-number
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 2bf35b6c26ec578792f9feddc458962981b7619189852a148fc3cbe952713494
- Leaf
- 0x8e3ee6ff59d40da056c43dd9a444d76456c20bd4cde7cc2e49c3cdf42062ea4d
What was observed
{
"endpoints": [
[
"x402",
"https://agentshelf.syntexa.ch/v1/base-block-number"
]
],
"name": "agentshelf.syntexa.ch/v1/base-block-number",
"owner_address": "0x1d61faa032d3f40d9c470d2bf3a3f53de0e55a38",
"raw": {
"accepts": [
{
"amount": "1000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
"scheme": "exact"
}
],
"description": "Call when an agent needs the latest Base block number and its timestamp. Send tag latest, or an empty object. Read-only eth_getBlockByNumber on eip155:8453. No spend. Send JSON {\"tag\":\"latest\"}. Exact $0.001 USDC on Base. Try unpaid POST /v1/sandbox/base-block-number first.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"tag": "latest"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"billed": true,
"block_number": 52930834,
"network": "eip155:8453",
"ok": true,
"receipt_id": "rcpt_01EXAMPLE000000000000000",
"tag": "latest",
"timestamp": 1792651020,
"warnings": []
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"examples": [
{
"tag": "latest"
}
],
"properties": {
"tag": {
"const": "latest",
"description": "Block tag. Only latest is accepted. Example: latest. Omit it for the same current Base block number and timestamp. No address.",
"examples": [
"latest"
],
"type": "string"
}
},
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"examples": [
{
"billed": true,
"block_number": 52930834,
"network": "eip155:8453",
"ok": true,
"receipt_id": "rcpt_01EXAMPLE000000000000000",
"tag": "latest",
"timestamp": 1792651020,
"warnings": []
}
],
"properties": {
"billed": {
"examples": [
true
],
"type": "boolean"
},
"block_number": {
"examples": [
52930834
],
"minimum": 0,
"type": "integer"
},
"network": {
"const": "eip155:8453",
"examples": [
"eip155:8453"
],
"type": "string"
},
"ok": {
"const": true,
"examples": [
true
],
"type": "boolean"
},
"receipt_id": {
"examples": [
"rcpt_01EXAMPLE000000000000000"
],
"type": "string"
},
"tag": {
"const": "latest",
"examples": [
"latest"
],
"type": "string"
},
"timestamp": {
"examples": [
1792651020
],
"minimum": 0,
"type": "integer"
},
"warnings": {
"default": [],
"examples": [
[]
],
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"ok",
"receipt_id",
"billed",
"network",
"tag",
"block_number",
"timestamp"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-22T07:20:44Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-22T07:20:43.292Z"
},
"resource": "https://agentshelf.syntexa.ch/v1/base-block-number",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Call when an agent needs the latest Base block number and its timestamp. Send tag latest, or an empty object. Read-only eth_getBlockByNumber on eip155:8453. No spend. Send JSON {\"tag\":\"latest\"}. Exact $0.001 USDC on Base. Try unpaid POST /v1/sandbox/base-block-number first."
}What the leaf hashes
{"body":"2bf35b6c26ec578792f9feddc458962981b7619189852a148fc3cbe952713494","id":63912,"kind":"listing","method":"baseline/1","observed_us":1793025455785410,"prev":null,"subject":"x402_bazaar:https://agentshelf.syntexa.ch/v1/base-block-number","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).
- 0x8e3e78fcf09724a5d8d33f7e9a8b2d8adf57b314bc0a4c38c6f2ecbbdb7ca5fb
- 0xe8cddf8dba25f44208231f20936f5d7db91635332becb0e7cba287797e06f666
- 0x52458b2ed6f28e475e17d8c97c8c8336420d4604cf9f1dd46607ae6525f61f1a
- 0xd35c371328a285d19544beb301df996f5f442591fe2d6d02a770affee2edc70b
- 0xc85b15fe5e02b2a8c398d2a68f9d14b4846fb1f6c34c4904b7f922feee579bfd
- 0xa9bb5327c462948e5d96838d3f1bff87f870c481c246923a8c39e471d0d70ad5
- 0xaaf114ef168082dd9225b72ad0aebb4cb5b6caf5932cda61a7777898f4c41172
- 0x22383eb1c8caadbe21ceb23d47dfbdb642449ab68e6d2e8175136edf06ec9e1c
- 0xa2dbfbb305c76bbf2107c06571bf81e6175882b7efa54da7a6353e5a8936d68c
- 0xb45d7f3c0bbf1dbd174936f74bee2215bba98889ae1b45f88dec07545b773ee4
- 0xf44f104cf96a81c75851a644746103fcbe6ade398683a18e789cc91eff4537ff
- 0x59a4efa65a01e4e2abdb3b8b7bb673db6d1c72e0f9d52dd2f94777b14a5b061c
- 0xc0cb184c9bdf71abcf18fda97bd59289153d120dbf8fee9f517b63bf303deb95
- 0xf0edabbb9ba0d643e5505d19d07637eb6f6aed0a1c7356af43ae7d84ae9ef0c5
- 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
- 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
- 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae