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/receipt-verify

0.01 USDC per call, Base network

Verify a receipt: canonical JSON digest and declared sha256

Facts

Endpoint
POST https://tools.nalvorn.top/receipt-verify
Price
0.01 USDC per call on Base
Payment address
0x98d6768508A36C04d8a60E5E5B24Ac3d628F5350
MCP tool name
receipt_verify at https://tools.nalvorn.top/mcp
Repeat calls
Every answer carries recheck_at (when to look again) and changed_since_last_call (whether anything moved since your previous call of the same tool), so you pay for a change, not for a habit of checking.

Request

{
  "payload": {
    "a": 1
  },
  "sha256": "0f343b09"
}

Answer

{
  "ok": true,
  "match": true,
  "computed": "0f343b09"
}

Run it

# первый вызов без оплаты вернёт 402 и точную цену в атомарных единицах
curl -sS -X POST https://tools.nalvorn.top/receipt-verify \
  -H 'content-type: application/json' \
  -d '{"payload": {"a": 1}, "sha256": "0f343b09"}'

# платный вызов: тот же запрос плюс подпись платежа
curl -sS -X POST https://tools.nalvorn.top/receipt-verify \
  -H 'content-type: application/json' \
  -H "PAYMENT-SIGNATURE: $PAYMENT" \
  -d '{"payload": {"a": 1}, "sha256": "0f343b09"}'

Try a free one first