← The evidence ledger
Evidence row 792361
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://pay.brianbooms.com/api/v1/synth/bundle
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- e73cf14bec6be181a1ede10f2f7370598a2e79a263e69b5d38dc97bdbd52ea33
- Leaf
- 0x2276a67a92739f7cd798524164b8e35cf77e37cf5e986a74e98e47ba33dc8dee
What was observed
{
"endpoints": [
[
"x402",
"https://pay.brianbooms.com/api/v1/synth/bundle"
]
],
"name": "Steward",
"owner_address": "0xa98e8c6cbc64b7bb30fd0d2015ab24814c661839",
"raw": {
"accepts": [
{
"amount": "750000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xa98e8c6cbc64b7bb30fd0d2015ab24814c661839",
"scheme": "exact"
},
{
"amount": "751970",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xa98e8c6cbc64b7bb30fd0d2015ab24814c661839",
"scheme": "exact"
},
{
"amount": "751970",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xa98e8c6cbc64b7bb30fd0d2015ab24814c661839",
"scheme": "exact"
},
{
"amount": "751970",
"asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:43114",
"payTo": "0xa98e8c6cbc64b7bb30fd0d2015ab24814c661839",
"scheme": "exact"
}
],
"description": "Synthetic Universe API: complete catalog — all tracks, one payment ($0.75 USDC on Base, 25% off vs singles). Music made with Suno — disclosed.",
"extensions": {
"bazaar": {
"discoverable": true,
"iconUrl": "https://brianbooms.com/favicon.ico",
"info": {
"input": {
"method": "GET",
"queryParams": {
"format": {
"enum": [
"json"
],
"type": "string"
}
},
"type": "http"
},
"output": {
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": true,
"properties": {
"format": {
"description": "Response format (json only)",
"enum": [
"json"
],
"type": "string"
}
},
"type": "object"
},
"serviceName": "Steward",
"tags": [
"digital-goods",
"license",
"steward",
"x402",
"music"
]
},
"market": {
"listings": "https://x402-market.brianbooms.workers.dev/api/listings",
"market": "https://x402-market.brianbooms.workers.dev",
"note": "Open directory of pay-per-use agent APIs — browse listings or list your own in one click."
},
"share": {
"active": true,
"message": "Know two agents who should be buying here? Point them at https://brianbooms.com/rail",
"url": "https://brianbooms.com/rail"
}
},
"lastUpdated": "2026-10-28T15:00:03.515Z",
"quality": {
"lastCalledAt": "2026-10-28T15:00:03.515Z"
},
"resource": "https://pay.brianbooms.com/api/v1/synth/bundle",
"serviceName": "Steward",
"tags": [
"steward",
"x402"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Synthetic Universe API: complete catalog — all tracks, one payment ($0.75 USDC on Base, 25% off vs singles). Music made with Suno — disclosed."
}What the leaf hashes
{"body":"e73cf14bec6be181a1ede10f2f7370598a2e79a263e69b5d38dc97bdbd52ea33","id":792361,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793211814140277,"prev":null,"subject":"x402_bazaar:https://pay.brianbooms.com/api/v1/synth/bundle","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (231336 rows).
- 0x22765ee767d3b70f0516deaa6282c4a7143d47ffe65530a6dc5a9057df695fde
- 0x8fcc31fa7829fdc7591df50a575f8642431bb7a69aedec3b9add80dba18fe1c5
- 0xe82c7c56f8ab64a69c60c9b420c827af0e2ca8dfd5978e0f214cffb5f7479155
- 0xa79244163e0b7f928af50eaa40427727071a65cf2a20eb7153baacc489941b75
- 0xc9efe35698b88543663ce617bcb8187e49e7cfe75672dccf245e032bd611ce88
- 0x013d70e2d1c0430a82d8450ba1a9f55c19a3fd1d95009f3854928f48819937ba
- 0x591276196ee7baa3aa4d6c87b8f8918daa6d3e1f39690e8042e5bc9382ee5cb2
- 0x9a70ba6c6f920a10fd941e6d4d422df7a75a18c6f3d4704e5aaf4ef35dfdb285
- 0xecee56a0bb8259c37e775f56103f433196c55803439d277559633715100c3507
- 0xc6818d38f35145699d5ea744e118e82817ae68766f069efc8b65c803d4f855e6
- 0xf66811b51cad5ddcf3ec211ff519a9e540ba3bd77ead1283f18695b95d7109ca
- 0x1afe025bf0d97efced13e77f68b5e16c7bfb56ea13cca50c8aed2d156e60d500
- 0x3ce83ad86ff4f1711072c47e954f682b6a67bc60b2342af27fa493f972b6b9c0
- 0xa45c19ee1ddfa3971a75affe2da0c01e0a09406bb4b50c48e0d9cf0e082801a3
- 0x4698ebc7cbcb2286f661b867355eb6a9183e884482ee16965889e886b17d19ac
- 0x35e8995c30094446ec790423171382fccb377081b921295b0ae3840cc2c4f52c
- 0xf078ea7d84d98dbeffed23d8e67b36751e60464ffd4cfdc005e0aa6f8cb9b459
- 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f
- Day root
- 0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e
- Chained
- 0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be
- Published
- On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae