Mehul Chauhan

Protocol Engineer @karnotxyz, building @arcxtrade

[Mehul Chauhan @byteZorvin]

11.06.2026

[ArcX @arcxtrade]

Every financial innovation connects previously disconnected parties, unlocking billions in value.

11.06.2026

[Mehul Chauhan @byteZorvin]

@arcxtrade 11.06.2026

[Mehul Chauhan @byteZorvin]

@theodore_kleinn sure

[Mehul Chauhan @byteZorvin]

is PFOF in tradfi actually MEV ?

[Mehul Chauhan @byteZorvin]

@deekshabhargav_ Why does the toilet have a bed

[Justin Drake @drakefjustin]

Today a crazy quantum story just got wilder.

On March 31, the Google Quantum AI team published a landmark result on Shor's algorithm for elliptic curve cryptography. Technically, the paper was a bombshell: a dramatic 10x improvement over the state-of-the-art. As a stunt and wakeup call to the blockchain space, those optimisations were illustrated on secp256k1, the elliptic curve underlying Bitcoin and Ethereum signatures.

But perhaps the most striking part of the paper was sociological, not technical. Instead of following standard academic process, the optimisations were kept secret, hidden behind a zero-knowledge (ZK) proof. Google's accompanying blog post mentions they "engaged with the U.S. government". The ZK proof demonstrates the existence of algorithmic improvements without leaking details. Academic censorship with ZK, a historic first!

As a co-author of the Google paper I witnessed some of the context surrounding this censorship. To be honest, multiple aspects of that context don't sit well with me. As much as I believe the general public ought to know more, I am limited in my ability to whistleblow. Though let me be clear about one thing: the Google team's professionalism has been absolutely exemplary, and they deserve nothing but praise.

Censorship has a way of backfiring. The Streisand effect, where an attempt to bury something only draws more attention to it, is exactly what's unfolding today. First, Google's key optimisation has been rediscovered by the French. And in a thrilling turn of events, a collaborative Shor-at-home challenge just launched. The initiative, available at ecdsa[.]fail, breached a new Shor world record in a matter of hours.

Let's start with the rediscovery. Just two months after Google's paper, French quantum expert André Schrottenloher cracks the main secret optimisation. His paper, titled "Optimized Point Addition Circuits for Elliptic Curve Discrete Logarithms", landed on the arXiv today. Big congrats to André, who beat several other nerdsnipped experts to it. In a blog post also published today, Craig Gidney, the world expert on Shor optimisations, revealed that he'd been sitting on this very optimisation for a whole year under censorship pressure.

Interestingly, André missed a handful of minor optimisations, both from Google's original publication and from improvements found since. It's plausible there's still plenty of juice left to squeeze out of Shor, and this is exactly what the ecdsa[.]fail challenge is about. The verifier program developed for the ZK proof does double duty, automatically filtering for valid submissions. Dozens of compounding small and micro improvements are rolling in. As of the time of writing there's an 8.4% improvement to Google's circuit, as measured by the product of logical qubit count and Toffoli gate count. Nice!

The nerdsnipping ran deeper than anyone expected. Over the last few weeks it became clear it extended well beyond André and other quantum experts. Behind the scenes, a small army of amateurs quietly got to work. Inspired by Karpathy-style autoresearch, they turned AI on Shor. Ironically, the verifier program for the ZK proof makes an ideal reward function for AIs. The barrier to entry for this modern style of research is refreshingly low, with several non-experts, even a teenager, finding nice optimisations. Get in touch if you'd like to join a Telegram group with fellow autoresearchers :)

Part 2: neutral atoms and qday

The story doesn't end with Google. On the same day Google went public, a stealthy startup called Oratomic published its own Shor paper in a coordinated release. It made a splash, ultimately becoming the most upvoted paper on scirate[.]com, a website ranking arXiv papers.

Oratomic's claim was wild. By building on Google's logical optimisations and applying custom physical optimisations for neutral atoms, they claimed just 10K physical qubits were sufficient to run Shor's algorithm on secp256k1. That number is mind-bogglingly low.

Knowing essentially nothing about neutral atoms when Oratomic's paper landed, I was intrigued and decided to learn more about the tech. I fell straight down the rabbit hole and spent a couple hundred hours on the topic. I got a little obsessed and watched every YouTube video I could find and spoke to a bunch of experts.

My conclusion? The tech is real, very real. Even Google recently decided to start a neutral atom lab, a notable pivot from their sole focus on superconducting qubits. If you care about qday, i.e. the day a quantum computer will break the first piece of cryptography in production, neutral atoms demand your attention. I shared some of my learnings on Shor and neutral atoms in a 30min talk at the ZKProof cryptography conference. You can find it on YouTube by searching "zkproof neutral atom".

Here's an interesting observation about this duo of breakthrough papers: neither Google nor Oratomic say a word about what their results mean for qday. No timelines. Zero. Nada. That is especially baffling given that the whole point of whitehat quantum cryptanalysis is to inform qday estimations and help the general public make good decisions.

So let me attempt to partially fill the silence, similarly to what Scott Aaronson did in his April 29 post. Given everything I know, including scary non-public information, I now put the odds of qday by 2032 at 50%. 10% by 2030.

Anecdotally, the US government has its own date: 2035. Originating at the NSA and later adopted by NIST, it's when branches of the US government will be disallowed from using quantum-vulnerable cryptography. In plain language: with hindsight, that date is a joke and should be discounted entirely. I don't see how NIST avoids being forced to pull it forward by years.

Part 3: post-quantum cryptography

There are good reasons to sound the alarm today, but please do not panic. Rushing carelessly towards immature post-quantum cryptography is a recipe for disaster. IMO a good target date for migration is 2029, roughly 3.5 years out. 2029 happens to be the date selected by Google, Cloudflare, and the Ethereum Foundation.

These days most of my time goes to safely migrating Ethereum towards post-quantum cryptography as part of the broader lean Ethereum effort. There's a lot to do. We need to rip out and replace BLS signatures at the consensus layer, KZG commitments at the data layer, and ECDSA signatures at the execution layer.

The plan to get there is compelling, and is based on hash-based cryptography. Within the Ethereum Foundation we've developed a Swiss army knife called leanVM (github[.]com/leanEthereum/leanVM) powered by the magic of hash-based SNARKs. Thanks to truly exceptional work by Emile, Thomas, and others, its performance is derisked. Regarding security, leanVM is a jewel, a minimal zkVM crafted for end-to-end formal verification and maximum security.

Want to help? There are two $1M initiatives. First, the Proximity Prize (proximityprize[.]org). Solve a long-standing mathematical conjecture in coding theory, improve hash-based SNARKs, and go home a millionaire. Second, the Poseidon Initiative (poseidon-initiative[.]info), offers $1M for breaking Poseidon, the SNARK-friendly hash function.

[Mehul Chauhan @byteZorvin]

@gesimxyz @futarddotio OG team, backing all the way

[donnoh.eth 💗 @donnoh_eth]

it’s kind of crazy that @base state updates have been down for over 30 hours now because of some bug related to the recent upgrade and no one even noticed just because withdrawals take 7 days anyway

[Mehul Chauhan @byteZorvin]

@akiraonstarknet Damn, 6 fans 😅

[Karnot @karnotxyz]

Bitcoin on @Starknet just got a lot more interesting.

strkBTC is now live:
- 3.13% APR
- private by default
- composable with DeFi

Stake with Karnot - the top Starknet validator with the lowest fees.

Yield + Privacy + Bitcoin.

[Mehul Chauhan @byteZorvin]

@akiraonstarknet @StaniKulechov I would argue that more than empathy this was existential question to an extent for defi.

More importantly this does not set the precedent and next hack there wont be defi united.

[Mehul Chauhan @byteZorvin]

@OhadBarta @swmansion Thats amazing !!
But who knew we would get Ai before the debugger 🥲
Havent touched a debugger in any language in months

[Mehul Chauhan @byteZorvin]

It begs the question: Are there actual cases where it’s definitively more profitable or secure to be on L2? The hidden security premium of Layer 2s is something the space desperately needs to rethink.

[Mehul Chauhan @byteZorvin]

The recent Kelp DAO hack is a harsh reality check for the rollup-centric roadmap.
Funds on L2s are fundamentally junior to L1. We just saw that even canonical bridge funds (native ETH on Arbitrum) can be frozen. There is 0 absolute guarantee you can take your funds back to L1.

[Mehul Chauhan @byteZorvin]

"The same token" is a myth. Depositing into Aave on L1 vs. L2 carries an entirely different risk profile. In the Kelp fallout, L1 depositors were in a far safer position than those on L2.

[Mehul Chauhan @byteZorvin]

@StaniKulechov Kingg !!

[Mehul Chauhan @byteZorvin]

@SuccinctLabs Definitely!
looking forward to it

[Jared Friedman @snowmaker]

We had room for 2,000 people at Startup School India.

More than 25,000 applied.

No Startup School anywhere in the world has ever had this many people apply. Not SF, not NYC, not London. India blew them all away.

[Claude @claudeai]

Introducing Claude Design by Anthropic Labs: make prototypes, slides, and one-pagers by talking to Claude.

Powered by Claude Opus 4.7, our most capable vision model. Available in research preview on the Pro, Max, Team, and Enterprise plans, rolling out throughout the day.

[Karnot @karnotxyz]

Privily is LIVE.

Proud to have worked closely with the Privily team to bring this to mainnet.

Privily uses Karnot’s in-house privacy layer built on top of Madara, enabling private, self-custodial financial transactions without compromising usability.

If you’re looking for the right balance between privacy, composability, and cost, reach out.

Also, this marks the first @Starknet L3 live on mainnet ✨