← The evidence ledger
Evidence row 63923
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://agentshelf.syntexa.ch/v1/base-events
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 9884ed144511f7ca92ffc92bf7b44f3ef9f097b849572dbcf189912c4ee058e6
- Leaf
- 0x625df219d2e5e75a051e84304512324e339cd22311c63c49898e3e777febdbd4
What was observed
{
"endpoints": [
[
"x402",
"https://agentshelf.syntexa.ch/v1/base-events"
]
],
"name": "agentshelf.syntexa.ch/v1/base-events",
"owner_address": "0x1d61faa032d3f40d9c470d2bf3a3f53de0e55a38",
"raw": {
"accepts": [
{
"amount": "5000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
"scheme": "exact"
}
],
"description": "Call when an agent needs raw Base logs for one contract, with optional topic0-topic3, a capped block range, and an optional event signature for decoding. Public mainnet.base.org windows stay small and HTTP 429 is not billed. Read-only. Send JSON fields address (string), topic0 (string), event (string). Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/base-events first.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"event": "Transfer(address indexed from, address indexed to, uint256 value)",
"topic0": "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"billed": true,
"from_block": 26246376,
"logs": [
{
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"block_number": 26246401,
"data": "0x00000000000000000000000000000000000000000000000000000000000f4240",
"decoded": {
"args": [
{
"indexed": true,
"name": "from",
"type": "address",
"value": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
},
{
"indexed": true,
"name": "to",
"type": "address",
"value": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
{
"indexed": false,
"name": "value",
"type": "uint256",
"value": "1000000"
}
],
"event": "Transfer"
},
"log_index": 12,
"topics": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
"0x000000000000000000000000d8da6bf26964af9d7eed9e03e53415d37aa96045",
"0x000000000000000000000000833589fcd6edb6e08f4c7c32d4f71b54bda02913"
],
"transaction_hash": "0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060"
}
],
"network": "eip155:8453",
"ok": true,
"receipt_id": "rcpt_01EXAMPLE000000000000000",
"to_block": 26246401,
"truncated": false,
"warnings": []
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"examples": [
{
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"event": "Transfer(address indexed from, address indexed to, uint256 value)",
"topic0": "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
}
],
"properties": {
"address": {
"description": "Contract on Base mainnet. Example: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (Circle USDC). Logs are filtered to this address. EIP-55 or all one case.",
"examples": [
"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
],
"type": "string"
},
"event": {
"description": "Optional Solidity event signature. Example: Transfer(address indexed from, address indexed to, uint256 value). topic0 defaults to its keccak. Arrays are not decoded.",
"examples": [
"Transfer(address indexed from, address indexed to, uint256 value)"
],
"maxLength": 300,
"pattern": "^[A-Za-z_][A-Za-z0-9_]*\\([A-Za-z0-9_,\\s]*\\)$",
"type": "string"
},
"from_block": {
"description": "First block, inclusive. On public Base the span is at most 16 blocks. With a configured BASE_RPC_URL, or on Ethereum, the span is at most 2000. Omit both bounds for the default recent window.",
"pattern": "^(0|[1-9]\\d*)$",
"type": "string"
},
"to_block": {
"description": "Last block, inclusive, or latest. On public Base the span is at most 16 blocks. With a configured BASE_RPC_URL, or on Ethereum, the span is at most 2000. Omit it to anchor the default window.",
"type": "string"
},
"topic0": {
"description": "First log topic, 32 bytes of hex. Example: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef is ERC-20 Transfer. Omit it for a wildcard in that position.",
"examples": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
],
"pattern": "^0x[0-9a-fA-F]{64}$",
"type": "string"
},
"topic1": {
"description": "Second log topic, 32 bytes of hex. Example: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef is ERC-20 Transfer. Omit it for a wildcard in that position.",
"pattern": "^0x[0-9a-fA-F]{64}$",
"type": "string"
},
"topic2": {
"description": "Third log topic, 32 bytes of hex. Example: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef is ERC-20 Transfer. Omit it for a wildcard in that position.",
"pattern": "^0x[0-9a-fA-F]{64}$",
"type": "string"
},
"topic3": {
"description": "Fourth log topic, 32 bytes of hex. Example: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef is ERC-20 Transfer. Omit it for a wildcard in that position.",
"pattern": "^0x[0-9a-fA-F]{64}$",
"type": "string"
}
},
"required": [
"address"
],
"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": [
{
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"billed": true,
"from_block": 26246376,
"logs": [
{
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"block_number": 26246401,
"data": "0x00000000000000000000000000000000000000000000000000000000000f4240",
"decoded": {
"args": [
{
"indexed": true,
"name": "from",
"type": "address",
"value": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
},
{
"indexed": true,
"name": "to",
"type": "address",
"value": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
{
"indexed": false,
"name": "value",
"type": "uint256",
"value": "1000000"
}
],
"event": "Transfer"
},
"log_index": 12,
"topics": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
"0x000000000000000000000000d8da6bf26964af9d7eed9e03e53415d37aa96045",
"0x000000000000000000000000833589fcd6edb6e08f4c7c32d4f71b54bda02913"
],
"transaction_hash": "0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060"
}
],
"network": "eip155:8453",
"ok": true,
"receipt_id": "rcpt_01EXAMPLE000000000000000",
"to_block": 26246401,
"truncated": false,
"warnings": []
}
],
"properties": {
"address": {
"examples": [
"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
],
"type": "string"
},
"billed": {
"examples": [
true
],
"type": "boolean"
},
"from_block": {
"examples": [
26246376
],
"minimum": 0,
"type": "integer"
},
"logs": {
"examples": [
[
{
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"block_number": 26246401,
"data": "0x00000000000000000000000000000000000000000000000000000000000f4240",
"decoded": {
"args": [
{
"indexed": true,
"name": "from",
"type": "address",
"value": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
},
{
"indexed": true,
"name": "to",
"type": "address",
"value": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
{
"indexed": false,
"name": "value",
"type": "uint256",
"value": "1000000"
}
],
"event": "Transfer"
},
"log_index": 12,
"topics": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
"0x000000000000000000000000d8da6bf26964af9d7eed9e03e53415d37aa96045",
"0x000000000000000000000000833589fcd6edb6e08f4c7c32d4f71b54bda02913"
],
"transaction_hash": "0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060"
}
]
],
"items": {
"additionalProperties": false,
"properties": {
"address": {
"type": "string"
},
"block_number": {
"minimum": 0,
"type": "integer"
},
"data": {
"type": "string"
},
"decoded": {
"anyOf": [
{
"additionalProperties": false,
"properties": {
"args": {
"items": {
"additionalProperties": false,
"properties": {
"indexed": {
"type": "boolean"
},
"name": {
"type": "string"
},
"type": {
"enum": [
"address",
"uint256",
"int256",
"bool",
"bytes32",
"bytes4",
"string",
"bytes"
],
"type": "string"
},
"value": {
"type": "string"
}
},
"required": [
"name",
"type",
"indexed",
"value"
],
"type": "object"
},
"maxItems": 16,
"type": "array"
},
"event": {
"type": "string"
}
},
"required": [
"event",
"args"
],
"type": "object"
},
{
"type": "null"
}
]
},
"log_index": {
"minimum": 0,
"type": "integer"
},
"topics": {
"items": {
"type": "string"
},
"maxItems": 4,
"type": "array"
},
"transaction_hash": {
"type": "string"
}
},
"required": [
"address",
"topics",
"data",
"block_number",
"transaction_hash",
"log_index",
"decoded"
],
"type": "object"
},
"maxItems": 50,
"type": "array"
},
"network": {
"const": "eip155:8453",
"examples": [
"eip155:8453"
],
"type": "string"
},
"ok": {
"const": true,
"examples": [
true
],
"type": "boolean"
},
"receipt_id": {
"examples": [
"rcpt_01EXAMPLE000000000000000"
],
"type": "string"
},
"to_block": {
"examples": [
26246401
],
"minimum": 0,
"type": "integer"
},
"truncated": {
"examples": [
false
],
"type": "boolean"
},
"warnings": {
"default": [],
"examples": [
[]
],
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"ok",
"receipt_id",
"billed",
"network",
"address",
"from_block",
"to_block",
"truncated",
"logs"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-22T09:31:18.382Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-22T09:31:17.364Z"
},
"resource": "https://agentshelf.syntexa.ch/v1/base-events",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Call when an agent needs raw Base logs for one contract, with optional topic0-topic3, a capped block range, and an optional event signature for decoding. Public mainnet.base.org windows stay small and HTTP 429 is not billed. Read-only. Send JSON fields address (string), topic0 (string), event (string). Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/base-events first."
}What the leaf hashes
{"body":"9884ed144511f7ca92ffc92bf7b44f3ef9f097b849572dbcf189912c4ee058e6","id":63923,"kind":"listing","method":"baseline/1","observed_us":1793025455808169,"prev":null,"subject":"x402_bazaar:https://agentshelf.syntexa.ch/v1/base-events","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).
- 0x625dfddf17b7acbac75128141d4b1d750327187d93f725f5a86045d1e8e46aed
- 0x2ee87face0679782e4ab2216a7dac00aecebc2b6be388d428925a7b56eaf2ab0
- 0x20a5905644f42ff6507aa7f1a1a0fbb60af3df5d1af8308e6f947499244aafa5
- 0x04a9e097cc86caf194319f770afc1972bd66a7fa494cb4fe9a0f316b05c58f11
- 0xf0dea2ad8ccaef3c0314ec5b039ea8b79570596e2490615d2b83fefa4e44926b
- 0x162d23bd7243e1a472b1b49915821e1fdc151ec6c87d3662c701568a91145129
- 0x082220eb4f26347e279f24e9fb924b6fc96fd0f88f1fc3294a0f885da17708d1
- 0x4352180a302b68ec973e750f2bc1dd10dc239b61d5faa8605f28678698ebe04e
- 0xe3dec21127ba7d316156370fd220eba2bd6f5a93b45c91aa4c73dfc340e9ffe9
- 0xbc3c355b950c7c23082f84a109d9c2ea6ccfd6ca5cc47b5103a3180b43e85bfd
- 0x131755a2ea202f5e6a5e7b2b4223cbbcd0bee9398f637648162d1129112491ce
- 0x7285c0b02d1aedd949b8ba0c7b2499f7121588ebdd4c96ef8725919bb84dd534
- 0x89fcaf55e37dd777228f271b79ea895534a66ec0d184363c2a6eb1b4d23c9ef1
- 0x216cebb9ae5414599109a02297c4817d7d1c6b1394afeb97efe38e32f0053974
- 0x7726154b91b2ad65b13849ef6cb6443b1f0ff113a3089c9bd5f2bcfc16be099d
- 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae