How to validate an address of Solana using Python?

Question

I want to know if the address of Solana either is valid or invalid by using Python. How can I do that? Like in web3.py we validate an Ethereum account/address and it returns True ofFalse.

Answer 1

You can use web3.js new PublicKey('your_address') to verify if it is a valid public key.

web3.js also provides PublicKey.isOnCurve(...) to validate if a public key is on ed25519 curve. Given there are PDAs in Solana, and that their addresses are valid public key, but are NOT on the curve.

To summarize: If you are able to instantiate, it means it is a valid public key, if you want to know if the address is on the curve, you need to further validate by calling isOnCurve(...)

Just noticed that you wanted an answer specific to python, depending on the client that you are using, there should be similar methods to use. One that I found is in solana-py, use the PublicKey object to validate.

Answer 2

import base58


def is_valid_solana_address(address):
    if len(address) != 44:
        return False
    decoded_address = base58.b58decode(address)
    return len(decoded_address) == 32

Answer 3

The examples in solders don't always work as intended. This is the current working example:

address = 'solana address'

sol_addr = Pubkey.from_string(address)

if sol_addr.is_on_curve():

print('passed test1')

return

if sol_addr.LENGTH == 32:

print ('passed test2')

These are the two major ways of validating a Sol address. Another way is to use the pair, but there are many dexes too on Sol so that won't be too solid.