← The evidence ledger
Evidence row 120802
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://saylorinnovations.com/api/validate/optimism
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- a1cd9ba3f1ebfaccc0aaaa2a75764d71a1b83602b2556d18c426cef76a7dae40
- Leaf
- 0x7db73bed55e1efc6f9313ac4594d895ddcca79bde357f12def3601977a403a7e
What was observed
{
"endpoints": [
[
"x402",
"https://saylorinnovations.com/api/validate/optimism"
]
],
"name": "Saylor Innovations Data Desk",
"owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:validate-optimis",
"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": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:validate-optimis",
"name": "USD Coin",
"note": "Polygon 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": "eip155:137",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:validate-optimis",
"name": "USD Coin",
"note": "Arbitrum 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": "eip155:42161",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
"memo": "saylor:datadesk:validate-optimis",
"reference": "EsFUMJZ8qoZCWjbowA5ZzvYHNTrYy1WGdH5hfhePCpQF",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazp2YWxpZGF0ZS1vcHRpbWlzbSIsInJlZmVyZW5jZSI6IkVzRlVNSlo4cW9aQ1dqYm93QTVaenZZSE5Ucll5MVdHZEg1aGZoZVBDcFFGIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI1NjA1NDk3NTF9.3YucM4dUw45AVYe_KjMGRthkqN58urADj-m0QVIiSDQ"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
"memo": "saylor:datadesk:validate-optimis",
"reference": "8caVuFX8rWZdUhuHxstuwHFaLeggtq1DoHb9RCoCQB3g",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazp2YWxpZGF0ZS1vcHRpbWlzbSIsInJlZmVyZW5jZSI6IjhjYVZ1Rlg4cldaZFVodUh4c3R1d0hGYUxlZ2d0cTFEb0hiOVJDb0NRQjNnIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI1NjA1NDk3NTF9.r5hRmeno-LkJyx5JVFaqPpLkP_j4zaSjth1n9o6QVi0"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "91621",
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:validate-optimis",
"native": true,
"note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
"quotedLamports": "94455",
"reference": "GRkhh1RzM2QJ2FQFL4g69RGPWdyRR9LAzdPQorwm5rjb",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazp2YWxpZGF0ZS1vcHRpbWlzbSIsInJlZmVyZW5jZSI6IkdSa2hoMVJ6TTJRSjJGUUZMNGc2OVJHUFdkeVJSOUxBemRQUW9yd201cmpiIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjkxNjIxLCJleHAiOjE3OTI1NjA1NDk3NTF9.aevhTkEqSZ2OYk9wyT-_oi4IJf300QSdnobnxJLF_JQ",
"solUsdPrice": 105.87
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
}
],
"description": "Validate a Optimism address before sending: checksum, wrong-network check, live account type and balance, OFAC screening, and a send verdict of ok, caution or do_not_send.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
},
"type": "http"
},
"output": {
"example": {
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"address_type": "EVM account or contract address (20 bytes)",
"chain": "optimism",
"chain_name": "Optimism",
"checksum": "valid",
"detected_network": null,
"format_valid": true,
"network_match": true,
"normalized": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"note": "Verdict is advice for an agent before moving funds: ok = nothing found, caution = check first, do_not_send = a serious problem, invalid = not a usable Optimism address. The on-chain check reads a public node at the latest block. Sanctions screening covers OFAC-listed digital-currency addresses only. A valid, clean address can still belong to the wrong person: confirm it through a second channel and send a small test amount first for large transfers.",
"on_chain": {
"balance": 0.18107959187534753,
"balance_symbol": "ETH",
"checked": true,
"eip7702_delegate": "0x5a7fc11397e9a8ad41bf10bf13f22b0a63f96f6d",
"exists": true,
"kind": "eip7702_delegated_account",
"transactions_sent": 40
},
"sanctions": {
"checked": true,
"entity": null,
"list": "OFAC SDN digital-currency addresses",
"sanctioned": false
},
"source": "Computed locally (checksum and format); Optimism public node; OFAC SDN digital-currency address list",
"summary": "Valid EVM account or contract address (20 bytes). ",
"verdict": "ok",
"warnings": [
{
"code": "eip7702_delegated",
"message": "This account has delegated its code via EIP-7702 (a smart-wallet style account). It is still a normal account for receiving funds.",
"severity": "low"
}
]
},
"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": "the Optimism address to validate before sending funds",
"type": "string"
}
},
"required": [
"address"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"address": {
"description": "Account or contract address",
"type": "string"
},
"address_type": {
"description": "Address type",
"type": [
"string",
"null"
]
},
"chain": {
"description": "Blockchain the data is for",
"type": "string"
},
"chain_name": {
"description": "Chain name",
"type": "string"
},
"checksum": {
"type": "string"
},
"detected_network": {
"description": "Detected network",
"type": [
"string",
"null"
]
},
"format_valid": {
"description": "Format valid",
"type": "boolean"
},
"network_match": {
"description": "Network match",
"type": "boolean"
},
"normalized": {
"type": [
"string",
"null"
]
},
"note": {
"description": "Caveat or context for reading the result",
"type": "string"
},
"on_chain": {
"description": "On chain",
"type": "object"
},
"sanctions": {
"type": "object"
},
"source": {
"description": "Data source the values come from",
"type": "string"
},
"summary": {
"description": "Short summary",
"type": "string"
},
"verdict": {
"description": "Overall assessment derived from the listed reasons",
"type": "string"
},
"warnings": {
"type": "array"
}
},
"required": [
"chain",
"chain_name",
"address",
"format_valid",
"checksum",
"network_match",
"on_chain",
"sanctions",
"warnings",
"verdict",
"summary",
"note",
"source"
],
"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/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
"lastUpdated": "2026-10-21T05:27:09.788Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-21T05:27:09.515Z"
},
"resource": "https://saylorinnovations.com/api/validate/optimism",
"serviceName": "Saylor Innovations Data Desk",
"tags": [
"optimism address validator",
"validate optimism wallet",
"address checksum check",
"ofac address screening",
"safe to send check"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Validate a Optimism address before sending: checksum, wrong-network check, live account type and balance, OFAC screening, and a send verdict of ok, caution or do_not_send."
}What the leaf hashes
{"body":"a1cd9ba3f1ebfaccc0aaaa2a75764d71a1b83602b2556d18c426cef76a7dae40","id":120802,"kind":"listing","method":"baseline/1","observed_us":1793025618818286,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/validate/optimism","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).
- 0x7db76b6470363809e1f009895542fc1812cfb9f9993b12a382bc7686676a274b
- 0xc77f64b24795214171a81c7f57002c736bb2a41a49412048a968d2bd685251aa
- 0x8b16b284172a23bb29fd684cf9b34784d837668100bd96a71f02e8cff7098efd
- 0x746b42b3ba4528fc23a5487dc0e21c9a03f018f34ef44dc702d9e686ac3bb2b8
- 0xb742147f8d1f4963353a2c45a2b5921803f5556962f354988d2d6c568f496bb3
- 0xee7ee8647fdd303478495bc736cbf6420e23ebcce103b30d9a7ec8dd1d6fab83
- 0x71fc214083b3f37a8939e3d32b84e95d338f163131e218e1adfb30df6136985f
- 0xcad543f037410e18b620be4568677dd3d1ec330aec49676b3ded9be57171d5a7
- 0xf0c521c76e6895a1d4c2d0bc9b57bf3c58f99d0a19c1129adb4684fbf86456ae
- 0x9fa5dbe99ca21068042ed16a3612abec879ae9bc437beeaf788519de22645918
- 0xaf10e841089e5989890dc77ffce42a46564d25ef15f30d1e35bf53a495483ad4
- 0xab729e4203b650f2a3c15efd6fd44eb2482232373bc1de662fd9d496869eb2d3
- 0x0bffb634300aa5609bddaa79e8d31d7cde36c0a5a4465472f809b9f5287e40d2
- 0x7721d38652b6444b18e1193824e50490ade04851ce6221771f6e374c4527d80f
- 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
- 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
- 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae