- A new transcript of the Austin Bitcoin Developers Socratic Seminar (22 Aug 2019) was published at diyhpl.us/diyhpluswiki/transcripts/austin-bitcoin-developers/2019-08-22-socratic-seminar-2/ and updated several times during the day.

- Discussion of Bluetooth attack vectors on hardware wallets: even if the transaction is unsigned when sent to the device, a user who blindly confirms on-screen can still be tricked, underscoring the need for careful manual verification.

- Supply-chain anti-counterfeiting brainstorm: participants explored cryptographic certification for luxury goods (wine, Manuka honey), debating blockchain-based provenance (vineyard → restaurant → consumer “drunk” flag) versus physical unclonable functions derived from unique angular-momentum fingerprints of circuit boards.

- Reference to a company that measures off-axis angular momentum of finished circuit boards to detect tampering or unexpected mass distribution, effectively creating a hardware-level integrity check for sealed devices such as point-of-sale terminals.

- Mention of ongoing life-extension work: Jong (a Korean researcher who knows Stanford’s Helen Blau) is running longevity experiments, and a participant is now collaborating with him in the UK.