We will examine all current and proposed mechanisms for creating a “Bitcoin Vault”. A Vault is a mechanism first proposed by Eyal et al to encumber your cold storage with a timelock, so that an attacker who manages to penetrate your cold storage or exfiltrate keys must wait out a timelock. During the time frame of this timelock, the owner has the opportunity to notice that a theft attempt is in progress via online monitoring of the blockchain, and deploy an alternative “clawback” spending mechanism to recover the funds, entirely preventing the theft. Topics covered will include the mechanism by Eyal at al, OP_PUSHTXDATA (Lau), pre-signed transactions with deleted keys (McElrath), OP_CHECKSIGFROMSTACK (O’Connor), as well as mechanisms useful to hide the fact that this alternative spending path exists (Taproot, MAST). Most of these mechanisms are dependent on future soft-fork changes to Bitcoin.
Dr. Bob McElrath, Ph.D. Theoretical Physics, Fidelity Investments (https://twitter.com/BobMcElrath)
Door opening: 18:30
Talk start: 19:00
Sponsor: 21 Lectures - Courses for developers to learn about Bitcoin https://www.21lectures.com
This is a casual Bitcoin meetup for newcomers and veterans alike. Open discussion, no organized speakers or topics. Also feel free to discuss all sorts of other blockchain topics. Please retain from investment seeking, sales or unsolicited advertisement of any kind.
We have a 2 for 1 drinks deal at Aura bar, so we try out this new place for the first time.
Hope as many of you as possible can join and have great discussions.