Sam Breckenridge

CS PhD @Cornell @initc3org

[Sarah Allen @sarahalle_]

The agenda for MEV-SBC '26 is live!
📍 Thursday, July 30 @ Stanford

This annual workshop highlights the past year of MEV research and surfaces the problems worth exploring next in cryptography, mechanism design, data, P2P, consensus, incentives, and where they intersect.

[Patrick McCorry 🐋 @stonecoldpat0]

New blog post focused on a fun paper by @danivilardell77 and @sjbreck

They study voter privacy via bribery games and call it B-Privacy.

Why?

Privacy in weighted voting is harder than it looks.

Even if every ballot is encrypted, the final tally itself can leak how people voted.

Worse: that leakage can make vote buying enfoceable

It is not straight forward to make a weighted voting system private without hiding the tally.

So, can you do something in between, where there is "enough" voting privacy such that the briber's cost is increased by several multiples?

Find out in the next tweet 👇

[IC3 @initc3org]

https://t.co/JZ8k7zkU1U

[IC3 @initc3org]

1/ Privacy-preserving credentials can prove you're over 18, but not much else.

New IC3 research changes that.

𝜋Creds introduces verifiable credentials generated by trusted LLM inference over authenticated data.

[IC3 @initc3org]

Spotted at @consensus2026 👀

IC3's @sjbreck participating in a workshop with @stephendpalley from @BrownRudnickLLP on the legal and technical risks of agentic AI

[Ari Juels @AriJuels]

A good TLDR for our paper on AI-powered collective investment schemes in Yahoo! Finance.

Article here: https://t.co/lzppVyczv0

Paper here: https://t.co/orb8Znb4oK

[IC3 @initc3org]

🧵 1/ New IC3 research reveals a fundamental dilemma in AI-powered trading systems and collective investment algorithms (CoinAlgs).

Think robo-advisors, quant funds, and AI DAOs like @ai16zdao and @truth_terminal.

We call it the "CoinAlg Bind":

[Sam Breckenridge @sjbreck]

@BlockEnthusiast @AriJuels Good point. These attacks are definitely a concern. B-privacy addresses a complementary problem: even if the system itself prevents you from letting others verify how you voted (receipt-freeness/coercion-resistance), the tally might still leak enough to enable bribery.

[Ari Juels @AriJuels]

Out today: https://t.co/NjpKIB9cAc.

[Ari Juels @AriJuels]

Secret-ballot crypto voting—e.g., in DAOs—is a great idea. But our research has uncovered a privacy gotcha.

https://t.co/NjpKIB9KpK

[Tally @tallyxyz]

Read the latest research on privacy in DAO voting co-authored by Tally CTO & Co-founder @rafaelsolari.

Featuring the first systematic guidance for weighted voting systems that goes beyond ballot secrecy.

Learn more ↓

[Arbitrum Developers @ArbitrumDevs]

Check out the new research on privacy in DAO voting by @stonecoldpat0, @tallyxyz, @theamyzhao and folks at @initc3org!

They show how weighted voting can leak voter choices, introduce a new framework called B-Privacy, and propose ways to make bribery much harder.

[IC3 @initc3org]

New IC3 research:

Token-weighted voting in DAOs is common across web3, but comes with a serious privacy flaw: voter choices can be inferred from tallies even if ballots are kept secret.

🧵⬇️