proof.arakelproof.space
Verify a Base USDC payment and sign a binding between that payment and caller-supplied request/response hashes. WHY PAY: Pay to bind a verified Base USDC payment to the exact request and response hashes so another machine can verify the paid API exchange. RESULT AFTER PAYMENT: Signed JSON binding request_hash and response_hash to a verified Base USDC payment, service_id and ARAKEL Ed25519 signature.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.003 USDC on Base to 0x3a2F…05B5e. The signed payment is good for 5 minutes.
- Paid to
- 0x3a2F…05B5e
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 3000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3a2F36D61c9BB3b3ee72426e2B6b58d774605B5e",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"tx": "0x0000000000000000000000000000000000000000000000000000000000000000",
"service_id": "example-service",
"request_hash": "0x2222222222222222222222222222222222222222222222222222222222222222",
"response_hash": "0x3333333333333333333333333333333333333333333333333333333333333333",
"expected_payee": "0x1111111111111111111111111111111111111111",
"expected_amount_usdc": "0.005"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"schema": "arakel.x402.receipt-verify.v1",
"payment": {
"decision": "VERIFIED",
"verified": true
},
"decision": "VERIFIED",
"verified": true,
"signature": {
"alg": "Ed25519"
},
"request_hash": "0x…",
"response_hash": "0x…"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"anyOf": [
{
"required": [
"expected_amount_usdc"
]
},
{
"required": [
"expected_amount_atomic"
]
}
],
"required": [
"tx",
"expected_payee",
"request_hash",
"response_hash"
],
"properties": {
"tx": {
"type": "string",
"description": "Base transaction hash"
},
"service_id": {
"type": "string"
},
"request_hash": {
"type": "string",
"description": "SHA-256 style 32-byte request hash for receipt binding"
},
"response_hash": {
"type": "string",
"description": "SHA-256 style 32-byte response hash for receipt binding"
},
"expected_payee": {
"type": "string",
"description": "Expected USDC recipient"
},
"expected_payer": {
"type": "string",
"description": "Optional expected USDC payer"
},
"min_confirmations": {
"type": "integer",
"maximum": 200,
"minimum": 1
},
"expected_amount_usdc": {
"type": "string",
"description": "Expected USDC decimal amount; provide this or expected_amount_atomic"
},
"expected_amount_atomic": {
"type": "string",
"description": "Expected USDC amount in 6-decimal atomic units; provide this or expected_amount_usdc"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-20 21:58Z
- Last indexed by Roundhouse
- 2026-09-24 15:45Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 02:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 404
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service proof.arakelproof.space and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=proof.arakelproof.space' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://proof.arakelproof.space/v1/x402/receipt-verify, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.