channel_verify

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Reference: Here

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Parameters

• amount (string, required) The amount of XRP, in drops, that the provided signature authorizes.
• channel_id (string, required) The Channel ID of the channel that provides the amount. This is a 64-character hexadecimal string.
• public_key (string, required) The public key of the channel and the key pair that was used to create the signature, in hexadecimal or the XRP Ledger’s base58 format.
• signature (string, required) The signature to verify, in hexadecimal.

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Returns

• signature_verified (boolean) If true, the signature is valid for the stated amount, channel, and public key.

// Result
{
  "result": {
    "signature_verified": true,
    "status": "success"
  },
  "status": "success",
  "type": "response",
  "forwarded": true
}

curl https://mainnet.xrpl.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"method":"channel_verify","params":[{"channel_id":"5DB01B7FFED6B67E6B0414DED11E051D2EE2B7619CE0EAA6286D67A3A4D5BDB3","signature":"304402204EF0AFB78AC23ED1C472E74F4299C0C21F1B21D07EFC0A3838A420F76D783A400220154FB11B6F54320666E4C36CA7F686C16A3A0456800BBC43746F34AF50290064","public_key":"aB44YfzW24VDEJQ2UuLPV2PvqcPCSoLnL7y5M1EzhdW4LnK5xMS3","amount":"1000000"}]}'

The channel, signature and key in this example are the documented xrpl.org sample values; the response was captured live from our endpoint. The check is a pure signature verification and does not require the channel to exist in the ledger.