3. Key generation and recovery phrases (BIP-39) - Build your own Bitcoin hardware wallet

Content:
- Entropy generation and mixing together multiple sources of randomness
- BIP39 - human-readable representation of entropy
- From entropy to BIP-32 seed

BIP-39:

Online tool to check BIP-39 and BIP-32 derivation:

MicroPython build with bitcoin and gui library:

wallet