← The evidence ledger
Evidence row 119733
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://saylorinnovations.com/api/evm/base/allowance/:address/:address2/:address3
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 5cdd736c0e9dc3e10cdf868931801fcf05694b38377d8f0ec553b1d8ee38460e
- Leaf
- 0xbe4d39e972b13df025669ee3252a882866f62adb8fbc467271d8278c66a7c1e9
What was observed
{
"endpoints": [
[
"x402",
"https://saylorinnovations.com/api/evm/base/allowance/:address/:address2/:address3"
]
],
"name": "Saylor Innovations On-Chain Data",
"owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:evm:allowance:base/allowa",
"name": "USD Coin",
"note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
"memo": "saylor:evm:allowance:base/allowa",
"reference": "t8U7RajGtvk84Fjtk88JMxHUVb3HKHufoFqhYHzxfyg",
"session": "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.4WW4quLkoaOKciguMZL9K9y1uaRKaOsTQzdSLRLsgNM"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
}
],
"description": "Base ERC-20 allowance - how much a spender can move from an owner, with unlimited-approval flag",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"pathParams": {
"address": "EVM wallet address (0x-prefixed, 40 hex characters)",
"address2": "EVM wallet address (0x-prefixed, 40 hex characters)",
"address3": "EVM wallet address (0x-prefixed, 40 hex characters)"
},
"type": "http"
},
"output": {
"example": {
"allowance": "100",
"chain": "base",
"owner": "0x1111111111111111111111111111111111111111",
"raw": "100000000",
"spender": "0x2222222222222222222222222222222222222222",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"unlimited": false
},
"type": "json"
}
},
"routeTemplate": "/api/evm/base/allowance/:address/:address2/:address3",
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"allowance": {
"type": "string"
},
"chain": {
"type": "string"
},
"owner": {
"type": "string"
},
"raw": {
"type": "string"
},
"spender": {
"type": "string"
},
"token": {
"type": "string"
},
"unlimited": {
"type": "boolean"
}
},
"required": [
"chain",
"owner",
"token",
"spender",
"raw"
],
"type": "object"
},
"type": {
"const": "json",
"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/v1790235422/bazaar-icons/bc5e2b3d111ebbef.jpg",
"lastUpdated": "2026-10-12T12:27:15.217Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-12T12:27:14.892Z"
},
"resource": "https://saylorinnovations.com/api/evm/base/allowance/:address/:address2/:address3",
"serviceName": "Saylor Innovations On-Chain Data",
"tags": [
"evm",
"base",
"allowance",
"onchain"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Base ERC-20 allowance - how much a spender can move from an owner, with unlimited-approval flag"
}What the leaf hashes
{"body":"5cdd736c0e9dc3e10cdf868931801fcf05694b38377d8f0ec553b1d8ee38460e","id":119733,"kind":"listing","method":"baseline/1","observed_us":1793025616425522,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/evm/base/allowance/:address/:address2/:address3","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).
- 0xbe4d58ef606a7a5326429068ec132d2b2b6e2ff42c4025aedcbd428af7e50841
- 0x3f9fac42087b09db775cbd48e2ab8a356f21e360ffb5e0f822d9133b06efc53e
- 0x8760aed13699c05597ac866dae9e830b04d5f742b108b323496fef003cb0601d
- 0xd47bd7cb64772f70421f1008a2085461529d9c2f0636583f102dacf9106a6469
- 0xb5bb4a78804fb1412365f0342d57179779094c382a848e5dbcfcb0b9b8e81526
- 0x6de64e2f08daae99f7d61c95b6b83f94aadc1db61e32d8424c0b6c6e4ac615b0
- 0x17f13dcc01655980f81306905b7435749560c63efe6001935be9add598aa6042
- 0x3a7e4ae88af336a1db58b5b595721420c577c1c93931f94a0b6a8746a9bc69d9
- 0x59d2ed1afe9209822b673cdabf6a11b8d0a4d2c5c380f7cc9ea0a18d4087142e
- 0x927b7a2d4b8d7a76e95e52be4a765e83f728466e719f0aa3e8653655c30cd191
- 0x0c2fadf69af6b0b6e19a10cc8f6ddfdff26662d74207cc53dcbcf5abfbdbc8c9
- 0xa6f71fd6c3a59323bf7c5386a54935b14c555d8c717289cc73700f56d86994cd
- 0xd5b5bb5812612371a70171b2252d90e95bb0581ea5a3be198122adc8442e4f79
- 0xf692ce2b0a640ec9f75aa960e5fb1c2c7091a04e24881798735752c19014e519
- 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
- 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
- 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae