CryptoApp - Python code to pull wallet balances from a variety of different chains through nothing other than your public key.

Crypto App developed for Android to read public keys from a variety of API's

Libraries:
datetime: https://docs.python.org/3/library/datetime.html
requests: https://docs.python-requests.org/en/latest/
json: https://docs.python.org/3/library/json.html

Bitcoin: https://blockchain.info/api/q
Ethereum: https://www.blockcypher.com/dev/ethereum/#txskeleton
Solana: https://docs.solana.com/developing/clients/jsonrpc-api
Binance Smart Chain: