← The evidence ledger
Evidence row 119017
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://quickbuild.quynguyenbac.workers.dev/api/base/token
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 8cbe5d8f0a3d3a41a3000c56f51d52482f985b9a7a0d854dc6ef253c2b506645
- Leaf
- 0xfeb4edf4e7b8a90b1eda6f3b0534b716388085a374cacbadc8fe2ade36c5019e
What was observed
{
"endpoints": [
[
"x402",
"https://quickbuild.quynguyenbac.workers.dev/api/base/token"
]
],
"name": "QuickBuild",
"owner_address": "0x751a4c3841be287544c371b4ee09bd3366aea7cf",
"raw": {
"accepts": [
{
"amount": "2000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x751a4c3841bE287544C371B4EE09Bd3366AeA7cf",
"scheme": "exact"
}
],
"description": "Inspect a token or any address on Base mainnet: contract vs EOA (incl. EIP-7702 delegation), bytecode size, ERC-20 name/symbol/decimals/totalSupply (raw and formatted; bytes32 symbols handled), proxy implementation (EIP-1967, beacon, ZeppelinOS/FiatToken), whether it is a well-known Base token (guards against spoofed symbols), and optionally the balance of `holder`. Read live from public Base RPC; metadata cached 1 h. All params optional: defaults to USDC on Base. Invalid input = 400, never...",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"type": "http"
},
"output": {
"example": {
"accountType": "contract",
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"chainId": 8453,
"codeSizeBytes": 1852,
"decimals": 6,
"isContract": true,
"isErc20": true,
"name": "USD Coin",
"proxy": {
"implementation": "0x2Ce6311ddAE708829bc0784C967b7d77D19FD779",
"standard": "ZeppelinOS (e.g. Circle FiatTokenProxy)"
},
"symbol": "USDC",
"totalSupply": {
"formatted": "4276257891.842451",
"raw": "4276257891842451"
},
"wellKnown": true
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"address": {
"description": "Token / contract address on Base (0x + 40 hex). Optional: defaults to USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.",
"type": "string"
},
"holder": {
"description": "Optional address whose balance of this token to include.",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"accountType": {
"type": "string"
},
"address": {
"type": "string"
},
"codeSizeBytes": {
"type": "integer"
},
"decimals": {
"type": [
"integer",
"null"
]
},
"holder": {
"type": "object"
},
"isContract": {
"type": "boolean"
},
"isErc20": {
"type": "boolean"
},
"name": {
"type": [
"string",
"null"
]
},
"proxy": {
"type": [
"object",
"null"
]
},
"symbol": {
"type": [
"string",
"null"
]
},
"totalSupply": {
"properties": {
"formatted": {
"type": [
"string",
"null"
]
},
"raw": {
"type": "string"
}
},
"type": [
"object",
"null"
]
},
"wellKnown": {
"type": "boolean"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-24T16:08:04.22Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-24T16:08:03.23Z"
},
"resource": "https://quickbuild.quynguyenbac.workers.dev/api/base/token",
"serviceName": "QuickBuild",
"tags": [
"base",
"erc20",
"token",
"crypto",
"onchain"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Inspect a token or any address on Base mainnet: contract vs EOA (incl. EIP-7702 delegation), bytecode size, ERC-20 name/symbol/decimals/totalSupply (raw and formatted; bytes32 symbols handled), proxy implementation (EIP-1967, beacon, ZeppelinOS/FiatToken), whether it is a well-known Base token (guards against spoofed symbols), and optionally the balance of `holder`. Read live from public Base RPC; metadata cached 1 h. All params optional: defaults to USDC on Base. Invalid input = 400, never..."
}What the leaf hashes
{"body":"8cbe5d8f0a3d3a41a3000c56f51d52482f985b9a7a0d854dc6ef253c2b506645","id":119017,"kind":"listing","method":"baseline/1","observed_us":1793025614345913,"prev":null,"subject":"x402_bazaar:https://quickbuild.quynguyenbac.workers.dev/api/base/token","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.