← The evidence ledger
Evidence row 60243
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://1gateway.dev/v1/onchain/base/token-info
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- d22c1a9c843adf478a975f01e884f45bcb4877a6d5111b6b6ca2d6d1d3ccd33b
- Leaf
- 0x262262696d2b8afa040501d058fec7bc54630955aa4a546e27a5cd9910b6394e
What was observed
{
"endpoints": [
[
"x402",
"https://1gateway.dev/v1/onchain/base/token-info"
]
],
"name": "1gateway",
"owner_address": "0x6246eee0355dd7a93c888fe59e1151388a0cc5a1",
"raw": {
"accepts": [
{
"amount": "2000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x6246eee0355Dd7A93C888fE59e1151388A0cC5a1",
"scheme": "exact"
}
],
"description": "Use when an agent needs an ERC-20's basics on Base before quoting, transferring or approving it. Input: address (token contract); optional holder (adds balance and share of supply) and spender (adds allowance, flags unlimited approvals). Output: JSON block+time, name, symbol, decimals, totalSupply raw and decimal, known issuer if curated. Name/symbol are self-reported. EOA or non-ERC-20: 4xx, not charged. Example: ?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"holder": "0x6246eee0355Dd7A93C888fE59e1151388A0cC5a1",
"spender": "0x000000000022D473030F116dDEE9F6B43aC78BA3"
},
"type": "http"
},
"output": {
"example": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"allowance": null,
"block": {
"number": 52515382,
"timestamp": "2026-10-12T15:48:31.000Z"
},
"chain": "base",
"chainId": 8453,
"codeSize": 1852,
"decimals": 6,
"holder": null,
"knownIssuer": {
"issuer": "Circle",
"note": "Circle-issued stablecoin; the issuer can mint, blacklist, pause and upgrade it (centralized control, expected for this asset)"
},
"name": "USD Coin",
"note": "Token metadata is whatever the contract reports (name and symbol are not verified and can imitate another token). For risk signals use /v1/onchain/base/token-r…",
"rpc": {
"kind": "public",
"source": "base-rpc.publicnode.com"
},
"symbol": "USDC",
"totalSupply": {
"amount": 4445795059.965714,
"raw": "4445795059965714"
}
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"address": {
"description": "ERC-20 token contract on Base mainnet (0x + 40 hex; mixed case must be a valid EIP-55 checksum). EOA → 400, non-ERC-20 contract → 422 (not charged)",
"examples": [
"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
],
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
},
"holder": {
"description": "Optional address whose token balance and share of total supply to include",
"examples": [
"0x6246eee0355Dd7A93C888fE59e1151388A0cC5a1"
],
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
},
"spender": {
"description": "Optional spender; with holder, adds allowance(holder, spender). Needs holder.",
"examples": [
"0x000000000022D473030F116dDEE9F6B43aC78BA3"
],
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
}
},
"required": [
"address"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"address": {
"type": "string"
},
"allowance": {
"properties": {
"amount": {
"type": "integer"
},
"owner": {
"type": "string"
},
"raw": {
"type": "string"
},
"spender": {
"type": "string"
},
"unlimited": {
"type": "boolean"
}
},
"type": [
"object",
"null"
]
},
"block": {
"properties": {
"number": {
"type": "integer"
},
"timestamp": {
"type": "string"
}
},
"type": "object"
},
"chain": {
"type": "string"
},
"chainId": {
"type": "integer"
},
"codeSize": {
"type": "integer"
},
"decimals": {
"type": "integer"
},
"holder": {
"properties": {
"address": {
"type": "string"
},
"balance": {
"type": "number"
},
"pctOfSupply": {
"type": [
"number",
"null"
]
},
"raw": {
"type": "string"
}
},
"type": [
"object",
"null"
]
},
"knownIssuer": {
"properties": {
"issuer": {
"type": "string"
},
"note": {
"type": "string"
}
},
"type": [
"object",
"null"
]
},
"name": {
"type": [
"string",
"null"
]
},
"note": {
"type": "string"
},
"rpc": {
"properties": {
"kind": {
"type": "string"
},
"source": {
"type": "string"
}
},
"type": "object"
},
"symbol": {
"type": [
"string",
"null"
]
},
"totalSupply": {
"properties": {
"amount": {
"type": "number"
},
"raw": {
"type": "string"
}
},
"type": "object"
}
},
"required": [
"chain",
"chainId",
"address",
"block",
"name",
"symbol",
"decimals",
"totalSupply",
"codeSize",
"knownIssuer",
"holder",
"allowance",
"rpc",
"note"
],
"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/v1791609992/bazaar-icons/c4d9db8f8f483844.png",
"lastUpdated": "2026-10-15T09:01:05.346Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-15T09:01:04.792Z"
},
"resource": "https://1gateway.dev/v1/onchain/base/token-info",
"serviceName": "1gateway",
"tags": [
"base",
"erc20",
"token-metadata",
"allowance",
"onchain"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Use when an agent needs an ERC-20's basics on Base before quoting, transferring or approving it. Input: address (token contract); optional holder (adds balance and share of supply) and spender (adds allowance, flags unlimited approvals). Output: JSON block+time, name, symbol, decimals, totalSupply raw and decimal, known issuer if curated. Name/symbol are self-reported. EOA or non-ERC-20: 4xx, not charged. Example: ?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}What the leaf hashes
{"body":"d22c1a9c843adf478a975f01e884f45bcb4877a6d5111b6b6ca2d6d1d3ccd33b","id":60243,"kind":"listing","method":"baseline/1","observed_us":1793025448129135,"prev":null,"subject":"x402_bazaar:https://1gateway.dev/v1/onchain/base/token-info","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.