BLS Multi-Signatures for Blockchain Applications with Foteini Baldimitsi | a16z crypto research
Source: YouTube · a16z crypto · published Aug 29, 2023 · 1:09:53
The talk presents advances in BLS multi-signatures, focusing on blind multi-signatures for decentralized anonymous credentials 1:00. The first part introduces blind multi-signatures that allow flexible signer selection without interaction among signers 19:16. The second part discusses BLS multi-signatures optimized for subsets of signers 5:01.
Key Takeaways:
• Multi-signatures enable multiple signers to create a single signature with sublinear size to the number of signers 1:21
• Blind multi-signatures allow users to obtain signatures without revealing the message content to signers 22:38
• The approach offers flexible signer selection with accountability, showing which issuers vouched for a credential 20:18
• BLS signatures enable efficient verification requiring only two bilinear pairings 39:56
• The scheme supports further aggregation of multiple credentials from the same issuer set 41:06
This work provides efficient constructions for decentralized credential systems with applications in blockchain settings like proof-of-stake protocols and multi-user wallets.
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First 800 characters of the transcript
good morning everyone uh welcome to today's a16z crypto research seminar very happy to introduce fattini baldimski who we know well she was a faculty fellow with us last summer summer 2022 so it's great to have her back talking about something which is very relevant for us BLS multi-6 so 15. uh thank you so much Tim thanks everyone for being here I'm really glad to be here again next up since uh previous summer and I'm excited to talk to you about two recent results which are kind of still work in progress or works at an under submission so any feedback would be very very highly appreciated so what I'm going to talk about is two different research projects that I've been working on this year with my collaborators but they have a common theme and the common theme is BLS multi-signatures so …