Reference implementation for BIP85
Includes a CLI tool to test the functionality. Example usage (requires installation beforehand):
bip85-cli --index 0 --xprv xprv9s21ZrQH143K2LBWUUQRFXhucrQqBpKdRRxNVq2zBqsx8HVqFk2uYo8kmbaLLHRdqtQpUm98uKfu3vca1LqdGhUtyoFnCNkfmXRyPXLjbKb bip39
See bip85-cli --help
for all options.