What is BIP-70 and why is it controversial? Why doesn’t BitPay implement the more universal BIP-21?

More on BIP-70: https://github.com/bitcoin/bips/blob/master/bip-0070.mediawiki

More on BIP-21: https://github.com/bitcoin/bips/blob/master/bip-0021.mediawiki

Note: This video was recorded prior to James Hilliard’s post that he has discovered “a class of BIP70 implementation flaws that have a security impact,” which was not discussed here but developments are being followed: https://twitter.com/james_hilliard/status/1065488927258116097

Deprecation warnings were recently merged for Bitcoin Core: https://github.com/bitcoin-dot-org/bitcoin.org/pull/2759

This question is from the October monthly Patreon session, which took place on October 27th 2018. If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron: https://www.patreon.com/aantonop

Advanced Bitcoin Scripting, Part 1: Transactions and Multisig – https://youtu.be/8FeAXjkmDcQ
Advanced Bitcoin Scripting, Part 2: SegWit, Consensus, and Trustware – https://youtu.be/pQbeBduVQ4I
CVE-2018-17144 vulnerability – https://youtu.be/5GD0kGT0SU0
Migrating to post-quantum cryptography
What is a private key? – https://youtu.be/xxfUpIV9wRI
Public keys vs. addresses – https://youtu.be/8es3qQWkEiU
Protocol development security – https://youtu.be/4fsL5XWsTJ4
Software distribution security – https://youtu.be/_V0vqy046YM
Lightning’s security model – https://youtu.be/_GNsT_ufkec
Misconceptions about the Lightning Network – https://youtu.be/c4TjfaLgzj4
Eltoo, and the early days of Lightning – https://youtu.be/o6eFZ5aI9N0
Lightning Network scaling – https://youtu.be/4KiWkwo48k0
Lightning Network interoperability – https://youtu.be/1HYMWcJHGXc
Lightning Network game theory – https://youtu.be/7if0DuTtozY
Atomic swaps – https://youtu.be/fNFBA2UmUmg
Full node and home network security – https://youtu.be/uo58zmyXqFY
Running nodes and payment channels – https://youtu.be/ndcfBfE_yoY
What is Segregated Witness (SegWit)? – https://youtu.be/dtOjjB4mD8k
SegWit and fork research – https://youtu.be/OorLoi01KEE

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 https://twitter.com/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.

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MASTERING BITCOIN, 2nd Edition: https://amzn.to/2xcdsY9

Translations of MASTERING BITCOIN: https://bitcoinbook.info/translations-of-mastering-bitcoin/

THE INTERNET OF MONEY, v1: https://amzn.to/2ykmXFs

THE INTERNET OF MONEY, v2: https://amzn.to/2IIG5BJ

Translations of THE INTERNET OF MONEY:
Spanish, ‘Internet del Dinero’ (v1) – https://amzn.to/2yoaTTq
French, ‘L’internet de l’argent’ (v1) – https://www.amazon.fr/Linternet-largent-Andreas-M-Antonopoulos/dp/2856083390
Russian, ‘Интернет денег’ (v1) – https://www.olbuss.ru/catalog/ekonomika-i-biznes/korporativnye-finansy-bankovskoe-delo/internet-deneg
Vietnamese, ‘Internet Của Tiền Tệ’ (v1) – https://alphabooks.vn/khi-tien-len-mang

MASTERING ETHEREUM (Q4): https://amzn.to/2xdxmlK

Music: “Unbounded” by Orfan (https://www.facebook.com/Orfan/)
Outro Graphics: Phneep (http://www.phneep.com/)
Outro Art: Rock Barcellos (http://www.rockincomics.com.br/)