Bitcoin, Explained — The Technical Side of Bitcoin

By Sjors ProvoostTechnology

Bitcoin, Explained — The Technical Side of Bitcoin episodes

September 25, 2020 Explaining Taproot - NADO 2
In the second episode of The Van Wirdum Sjorsnado, Aaron and Sjors break down and explain Taproot, the building blocks that make Taproot possible, and what it enables Bitcoin to do. Helpful Links: Taproot Explainer:
Chapters
00:00:00 Introducing Taproot and its building blocks
00:02:49 Pay to script hash and spending conditions
00:07:54 MAST and revealing only the script you use
00:12:18 The cooperative spending path
00:14:48 Schnorr signatures and combining keys
00:17:53 Taproot hides a script tree inside a key
00:23:03 Multisignatures and MuSig
00:25:09 Lightning privacy and larger contracts
00:28:37 Implementation, wallet readiness and activation
Support the Show! Follow Bitcoin Magazine on Twitter @BitcoinMagazine Follow Aaron van Wirdum @AaronvanW Follow Sjors Provoost @provoost Music: Song Title: Segwit SoundsBy: The NakamoTonesAlbum: Citadel MusicProduced by: Bitcoin Audio
32 min
September 22, 2020 Explaining New PSBT and RBF Attacks - NADO 1
Bitcoin Magazine’s Technical editor Aaron van Wirdum teams up with Bitcoin core contributor Sjors Provoost to explain Bitcoin one episode at a time. In the debut episode of The Van Wirdum Sjorsnado, Aaron and Sjors break down and explain Partially Signed Bitcoin Transactions (PSBT) and Replace By Fee (RBF) and some really tricky attacks that where recently discovered in Bitcoin.
Helpful Links:
PSBT Attack Vector:
RBF Attack Vector:
Chapters
00:00:00 Meet the hosts: hardware wallets and excessive fees
00:06:49 SegWit commits signatures to input amounts
00:07:34 Combining signatures from two misleading requests
00:11:57 Checking previous transactions fixes the fee attack
00:13:01 Taproot and signing all input information
00:17:07 Wallet compatibility and mitigation tradeoffs
00:20:54 Replace by fee and the fee market
00:24:57 Opt-in replacement rules and miner incentives
00:27:45 Replacement handling, wallet balances and denial of service
00:32:14 Security reporting and the scale of the problem
Support the Show!
Follow Bitcoin Magazine on Twitter @BitcoinMagazine
Follow Aaron van Wirdum @AaronvanW
Follow Sjors Provoost @provoost
Music:
Song Title: Segwit SoundsBy: The NakamoTonesAlbum: Citadel MusicProduced by: Bitcoin Audio
36 min