CheckValidSecp256k1PubKey checks if a given public key hex is a valid secp256k1 public key.

GetValidBtcAddr returns a valid Bitcoin address or an error if the address is invalid.

GetValidEthAddr returns a valid Ethereum address or an error if the address is invalid.

IsBitcoinMainnet checks if a BTC address is a mainnet address.

IsBitcoinTestnet checks if a BTC address is a testnet address.

IsTapRoot checks if a BTC address is a taproot address.