What cryptography magic makes mnemonic seed words work? How is randomness generated? Can seed words be imported into more than one wallet?

More on wallets and mnemonic code words - https://github.com/bitcoinbook/bitcoi...

BIP39 - Mnemonic code for generating deterministic keys https://github.com/bitcoin/bips/blob/...
BIP32 - Hierarchical deterministic wallets https://github.com/bitcoin/bips/blob/...

Chapters
0:00 How do mnemonic seed words work? It looks like magic to me
0:49 They are basically a number, but that number is represented by words, almost like a lookup table
2:37 Stretching
3:39 Hierarchical deterministic wallets
4:38 The words in the mnemonic phrase are not selected by you; the words are produced from a 128 or 256 bit random number. When we say "random," what does that mean? Does that mean true random?

These questions are from the MOOC 9.4 session which took place on March 9th, 2018. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles.

If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron:   / aantonop  

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Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and respected figures in bitcoin.

Follow on Twitter: @aantonop   / aantonop  
Website: https://antonopoulos.com/

He is the author of two books: “Mastering Bitcoin,” published by O’Reilly Media and considered the best technical guide to bitcoin; “The Internet of Money,” a book about why bitcoin matters.

THE INTERNET OF MONEY, v1: https://www.amazon.co.uk/Internet-Mon...

[NEW] THE INTERNET OF MONEY, v2: https://www.amazon.com/Internet-Money...

MASTERING BITCOIN: https://www.amazon.co.uk/Mastering-Bi...

[NEW] MASTERING BITCOIN, 2nd Edition: https://www.amazon.com/Mastering-Bitc...

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