Installation and usage of the platform

REST API: signing and validating messages in the blockchain

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The following methods of the addresses group are provided for signing and validating messages:

POST /addresses/sign/{address}

The method signs the string passed in the message field with the addressee {address} private key and then serializes it in base58 format.

The method returns the serialized string, the addressee’s public key and signature in the response.

Examples of a query and a response:

POST /addresses/sign/{address}:

Query:

{
 "message": "mytext"
}

Response:

{
  "message": "wWshKhJj",
  "publicKey": "C1ADP1tNGuSLTiQrfNRPhgXx59nCrwrZFRV4AHpfKBpZ",
  "signature": "62PFG855ThsEHUZ4N8VE8kMyHCK9GWnvtTZ3hq6JHYv12BhP1eRjegA6nSa3DAoTTMammhamadvizDUYZAZtKY9S"
}

POST /addresses/verify/{address}

The method checks the signature of the message made by the {address}.

Examples of a query and a response:

POST /addresses/verify/{address}:

Query:

{
  "message": "wWshKhJj",
  "publickey": "C1ADP1tNGuSLTiQrfNRPhgXx59nCrwrZFRV4AHpfKBpZ",
  "signature": "5kwwE9sDZzssoNaoBSJnb8RLqfYGt1NDGbTWWXUeX8b9amRRJN3hr5fhs9vHBq6VES5ng4hqbCUoDEsoQNauRRts"
}

Response:

{
  "valid": true
}

POST /addresses/signText/{address}

The method signs the string passed in the message field with the private key of an {address}. Unlike the POST /`addresses/sign/{address} method, the string is passed in the original format.

Examples of a query and a response:

POST /addresses/signText/{address}:

Query:

{
  "message": "mytext"
}

Response:

{
  "message": "mytext",
  "publicKey": "C1ADP1tNGuSLTiQrfNRPhgXx59nCrwrZFRV4AHpfKBpZ",
  "signature": "5kVZfWfFmoYn38cJfNhkdct5WCyksMgQ7kjwHK7Zjnrzs9QYRWo6HuJoGc8WRMozdYcAVJvojJnPpArqPvu2uc3u"
}

POST /addresses/verifyText/{address}

Checks the signature of the message made by the {address} via the POST method /addresses/signText/{address}.

Examples of a query and a response:

POST /addresses/verifyText/{address}:

Query:

{
  "message": "mytext",
  "publicKey": "C1ADP1tNGuSLTiQrfNRPhgXx59nCrwrZFRV4AHpfKBpZ",
  "signature": "5kVZfWfFmoYn38cJfNhkdct5WCyksMgQ7kjwHK7Zjnrzs9QYRWo6HuJoGc8WRMozdYcAVJvojJnPpArqPvu2uc3u"
}

Response:

{
  "valid": true
}

The message, publicKey, signature fields in the request are mandatory. If the value in one of the fields is invalid, the method returns an error indicating this field, for example:

{'error': 108, 'message': 'invalid public key: I82TisHAE2vuEQuNQkGSdLau'}
See also

REST API methods