Bitcoin Optech #315: Dark Skippy & More
This issue covers the Dark Skippy attack, discusses block withholding, shares stats on compact block reconstruction, outlines a replacement cycling attack on pay-to-anchor transactions, introduces a new BIP for threshold signing with FROST, and notes an Eftrace improvement for verifying zk-proofs.
This issue:
- announces the Dark Skippy fast seed exfiltration attack;
- summarizes discussion about block withholding attacks and proposed solutions;
- shares statistics about compact block reconstruction;
- describes a replacement cycling attack against transactions with pay-to-anchor outputs;
- mentions a new BIP specifying threshold signing with FROST;
- relays an announcement of an improvement to Eftrace that allows it to opportunistically verify zero-knowledge proofs using two proposed soft forks;
- recaps the "Add PayToAnchor(P2A), OP_1 <0x4e73>, as standard output script for spending" PR Review Meeting;
- adds a Block withholding topic;
- adds a Replacement cycling topic.
- "Bitcoin Optech will host an audio recap discussion of this newsletter with special guests Matt Corallo, Greg Sanders, and Sivaram Dhakshinamoorthy on Twitter Spaces Tuesday at 14:30 UTC. Join us to discuss or ask questions!"
