Researchers from @Nokia @BellLabs, @Mysten_Labs, @SuiNetwork & collaborators from leading Universities just made an exciting breakthrough: Prove things about yourself to different people & services without revealing your identity, using technology deployable on real-world hardware, like old mobile phones, and whatever infrastructure we have today. This is especially important for finance, health, AI and blockchains, where we want to verify users or agents without exposing their personal information to the entire world! Congrats to our own @Mahdi_seda Accepted at ASIACRYPT 2026 🚀

This year, Dragons’ Den (Shark Tank) Greece has a cryptographer. All in for crypto + AI investments, even outside the show. Premiere today at SKAI TV Greece, 22:10 GR time (20:10 UK, 12:10 California)

Welcome Havenex. Series A is underway and closing soon, already applied for all required licenses (even more than required). DM me if interested to invest, note that allocation is already quite packed. After extensive discussions with regulators, central bank governors, Financial Market Authority leadership, banks, family offices, exchanges, wallet providers and custodians, my mission became very clear: Build the most transparent, safest, institutional-grade, fully regulated exchange possible, with continuous, verifiable proofs of solvency. Not just web3. Havenex is not trying to become another Coinbase, Binance, Bybit or Kraken. The focus is different: infra that allows financial institutions to offer digital and traditional financial assets to their customers, while meeting the standards they expect around regulation, custody, security and transparency. My principles are simple: 100% multi-chain. Verifiable custody. Continuous solvency proofs. Multi-sig by default. Quantum-safe keys. Hardware 2FA wallets. Confidential and RWA assets wherever regulation allows. Unique self-custody and key-loss protection mechanisms. Some of the best engineers and experts in cryptography, exchanges and privacy-preserving technology are joining the effort. Havenex will use Sui tech wherever it makes sense, but it will also integrate the best primitives, assets and bridges from other ecosystems. I'm personally helping Havenex as an advisor, although it was my idea. Mysten Labs and Sui remain my focus, nothing changes there. Chief & Hacker team Officer, as always, innovating at daily basis :) As all of you know since my Satoshi days, my goal has always been bigger: help crypto meet regulation without sacrificing ownership, transparency or security, while protecting users against malicious and shady activity and giving the best ecosystems room to thrive. We cannot keep accepting another FTX or Mt. Gox as the cost of doing business, nor the silly, insane bugs driven by LLMs lately. Havenex intends to set a different standard. The most transparent effort in regulatory-friendly crypto. You have my signature.

Last week @hadron_tether went live on @SuiNetwork. This week @Securitize brought Neuberger Berman’s first tokenized fund to Sui. I wonder what happens when idle BTC becomes collateral for high yield RWAs…

The comprehensive analysis of why @SuiNetwork chose both SPHINCS+ and Dilithium for quantum safety. Why did we reject Falcon? Why these parameter sets, and not smaller or larger keys? And how did our discussions with hardware providers and regulators affected these decisions? IMHO a must-read for CISOs and cryptographers preparing for the post-quantum transition.

Decided to help 🇬🇷 Greece’s startup ecosystem a bit differently this year, joining Dragon’s Den 🐉 Going in open-minded… AI & blockchains should have a voice at the TV table.

Spent a couple of weekends optimizing hash-only key exchange, mostly inspired by the recurring, and fortunately so far unsuccessful, theories that lattice cryptography may be broken sooner than expected. The result is a small but meaningful optimization over Merkle puzzles: exchanging a cryptographic key using ONLY hashes, with a better computation/bandwidth tradeoff than the classical construction. It’s still not practical for real world key exchange, but it appears to push the state of the art a little further. I’ll soon share a working implementation targeting parameter sets where an attacker would need roughly $100K–$1M of scalable compute, while the honest parties can still run the exchange on a regular laptop. Thanks to @SuiNetwork, @WalrusProtocol, @Mysten_Labs, community members, my wife and the external reviewers who helped challenge the idea.

Sui has already started shipping post-quantum code into its fastcrypto library. The migration to quantum-safe cryptography may happen much sooner than originally expected, there is external pressure 🤷‍♂️

Sui just went live on Hadron by @Tether. Sub-400ms finality. Object-centric architecture built for real asset logic. Now the rails institutions use to issue tokenized equities, bonds and commodities compliantly, are available at scale, on @SuiNetwork.

@kostascrypto lists the three reasons your agent’s memory needs to move with you: geopolitics that can cut off a model overnight, regulation like GDPR, and the day a rival model simply gets better. Which of these has hit your stack?

Reportedly working on affordable Quantum 2FA Sui cards. What happened to Coldcard will NEVER happen to my people, but I need to step up with personal time (dear wife, please excuse me) Last year, with help from some friends, I leased a dedicated factory in a secret location to build quantum-safe wallets at scale. Target: < $10 per quantum card key and < 1-2secs per NFC quantum signature. Crypto users shouldn’t be the victims. I won’t allow it. And yeah, I might even sponsor them for the very poor. Everyone deserves top-tier protection hygiene. We shouldn’t be reacting to the quantum or bad randomness threat. We should lead it. And hopefully, one day, even the banks will be using our tech, as you all know me… I’m devoted 🫡 to crypto!

Auto-evolved addresses. Same wallet mnemonic with automatic signature lift, afaik our yesterday’s discovery in the Sui cryptographers’ meditation 🧘 gathering, revealed a new algorithm. More soon

Data is the expensive, unsolved part of building #AI# agents. @kostascrypto shares why Walrus Memory is one of the strongest attempts yet at fixing it. What’s breaking in your agent’s memory setup?

Sui ran one of the most comprehensive analyses and feedback from top Uni scientists, hardware wallet leads, financial regulators even gov and bank security admins and officials before deciding to support the Dilithium and Sphincs+ Quantum Safe wallets. Read this and wait for next week’s post on why we rejected other quantum proposals and why the correct time is NOW.