Valid address API endpoint

[olemis]

Implement [GET] /api/addresses/{address}/validity

Should check and return address validity.

Should check and return wallet address validity

Response:

{
 // Flag, which indicates that the address is valid
“isValid”: boolean
}

Python implementation

def isValidAddress(address):
    """
    Validate Skycoin address.
    """
    addressObj = skycoin.cipher__Address()
    error = skycoin.SKY_cipher_DecodeBase58Address(
            address.encode(), addressObj)
    return error == 0


@api.route('/addresses/<string:address>/validity', methods=['GET'])
def address_valid(address):
    """
    Check if an address is valid
    A SKY address uses an alphanumeric base58 encoding, without 0, O, I or l.
    Important note: the last four bytes are a checksum check. They are the
    first four bytes of a double SHA-256 digest of the previous 21 bytes
    Read the first twenty-one bytes, compute the checksum, and
    check that it corresponds to the last four bytes.
    """
return jsonify({"isValid": isValidAddress(address)})