← The evidence ledger
Evidence row 118621
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/bigNumberArithmetic
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 0b461e23ea837dd6360645f48ca68f50c54093c0f844f1f533267840d41face0
- Leaf
- 0x238f517054b0144055d3e8bfd813ab1c826ee9731a7e197dc93ff81c54c0ccb9
What was observed
{
"endpoints": [
[
"x402",
"https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/bigNumberArithmetic"
]
],
"name": "Sindri",
"owner_address": "0x548efd4f4d4a5c3669dbb4cbb2b1a637feeec5f6",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x548eFd4f4d4A5C3669dbb4CBB2B1A637FeeEc5F6",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "APer2AbhckyMWyJanW2MZ2eRLcpL9Lmhks8rkmXfqjRG",
"scheme": "exact"
}
],
"description": "Arbitrary-precision integer arithmetic (add, subtract, multiply, power) beyond IEEE-754 float precision, using native BigInt. Operands are passed as digit strings so precision is never lost in transit. For power, the combined magnitude (base digit count x exponent) is capped at 50000 to bound response size, in addition to the per-operand digit cap and exponent cap.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"a": "123456789123456789",
"b": "987654321987654321",
"operation": "add"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"data": {
"params": {
"a": "123456789123456789",
"b": "987654321987654321",
"operation": "add"
},
"result": "1111111111111111110"
},
"ok": true
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"a": {
"description": "First operand, as a string of digits (optionally negative). Max 1000 digits.",
"type": "string"
},
"b": {
"description": "Second operand (or exponent for power), as a string of digits. Max 1000 digits (max 1000 for exponent on power).",
"type": "string"
},
"operation": {
"description": "Operation to perform.",
"enum": [
"add",
"subtract",
"multiply",
"power"
],
"type": "string"
}
},
"required": [
"a",
"b",
"operation"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"builder-code": {
"info": {
"a": "x402_api_vendor",
"s": [
"cdp_sdk_server"
]
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"a": {
"description": "App builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"s": {
"description": "Service builder codes",
"items": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"maxItems": 11,
"type": "array"
},
"w": {
"description": "Wallet builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
}
},
"type": "object"
}
},
"eip2612GasSponsoring": {},
"erc20ApprovalGasSponsoring": {}
},
"lastUpdated": "2026-10-23T13:42:31.923Z",
"quality": {
"l30DaysTotalCalls": 5,
"l30DaysUniquePayers": 4,
"lastCalledAt": "2026-10-23T13:42:31.796Z"
},
"resource": "https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/bigNumberArithmetic",
"serviceName": "Sindri",
"tags": [
"big number arithmetic",
"arbitrary precision",
"bigint math"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Arbitrary-precision integer arithmetic (add, subtract, multiply, power) beyond IEEE-754 float precision, using native BigInt. Operands are passed as digit strings so precision is never lost in transit. For power, the combined magnitude (base digit count x exponent) is capped at 50000 to bound response size, in addition to the per-operand digit cap and exponent cap."
}What the leaf hashes
{"body":"0b461e23ea837dd6360645f48ca68f50c54093c0f844f1f533267840d41face0","id":118621,"kind":"listing","method":"baseline/1","observed_us":1793025613524432,"prev":null,"subject":"x402_bazaar:https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/bigNumberArithmetic","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.