Alexander Spiegelman
@SashaSpiegelman
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Head of Research @aptoslabs. Co-creator of BlockSTM, Narwhal, Bullshark. Spicy tweets are my own. Teach your kids to ski, they will never have money for drugs.
Joined January 2022
We can finally share this with the worldπ.The next and latest word on parallel execution after BlockSTM is out! . Read how the @Aptos_Network executes sequential workload in parallel. Minting 1M limited collection NFT in 90 seconds is absolutely insaneπ€―.
Parallel execution of transactions is cool, but what if the workloads are sequential? At @AptosLabs, we came up with a solution that allows parallel execution of smart contracts even in presence of read-write conflicts. Make sure to check out this post!
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1/12 Bullshark: The Partially Synchronous Version. Check out the short π: No view-change, no view-synchronization!.Consensus, simpler than ever. W. Neil Giridharan, @alberto_sonnino, @LefKok . Details π π§΅.
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Happy to share that BlockSTM, the @Aptos_Network parallel execution engine, was accepted to @PPoPPConfπ₯³π₯³π₯³. This project is a great example of the research flow in @Aptos_Network:. Real Aptos problem -> brainstroming -> poc -> production -> top tier publication.
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ONLY ON APTOS: Zero latency overhead POS secure on chain instant randomness! . When cutting-edge research meets world-class engineering. Roll your dice on Aptos!.
Happy to share that our randomness latency paper is accepted in FCβ25! . Out of the 300 submissions, only 19 accepted and 28 conditionally accepted papers (acceptance rate 15.7%). Check out how we achieve near-zero overhead for on-chain randomness on @Aptos .
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@flow_blockchain congrats on the implementation, great job!. Happy to see the community adapting our technology. This is why we build in the open at @Aptos_Network. Also personally very flattered that the paper is impcatfullπ.
More updates on the upcoming spork for you! . β‘οΈ We are making node software upgrades faster than ever. Also block finalization #onFlow will be 33% faster, unlocking new use-cases and opportunities!.
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Thrilled to announce that our Shoal++ paper has been accepted at NSDI 2025!.NSDI is one of the premier systems conferences, and Iβm delighted they recognized the significance of our work. Congrats @ibalajiarun, @zekun000, Florian, and @sourav1547.
1\10 .Happy to share Shoal++, our Next Generation DAG BFT system. TL;DR: Shoal++ supercharges Shoal to achieve near-optimal theoretical latency while preserving the high throughput and robustness of state-of-the-art DAG BFT protocols. Check out the post or keep reading the π§΅.
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So we put this graph out 3 months ago, and no one from the Sui team pushed back. Not even their paid maxis and cheerleaders. Why? Because they can't. Mysticeti is just a marketing system for low latency in perfect centralized networks, and they know it. Here is the code (a.
Many paid KOLs and Maxis are recently hyping Mysticeti, so we decided to add some color. 0.05% message drops destroys Mysticeti's latency - from 1s to 10s!. We ran the latest Mysticeti code with 5/100 nodes dropping 1% of messages (starting at the red line). This is because
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Fast and furious.
PURE CINEMA : @Aptos Blocktime is the fastest in the world right now π½οΈ. It's so quick, it's a treat to watch blocks being processed in real time. According to Chainspect, Aptos has an average blocktime of just 0.22 seconds π€―
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Check this out. So simple and yet so powerful primitive in distributed systems!.
Provable Broadcast. With @SashaSpiegelman!.
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@Aptos_Network parallel executer engine, Block-STM, is arguably the first ever practical Software Transactional Memory system. If you want to learn more, our concurrency π₯· @rgelash explains at @a16zcrypto seminar: .
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Finally removed the Blockchain execution bottleneck!.Check out our result here: Reach out w. any questions, we at @aptoslabs are happy to collaborate. w. @rgelash, Zhuolun Xiang @GDanezis, @zekun000, Yu Xia, Runtian Zhou, and @dahlia_malkhi .#Aptos.
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We keep building in @Aptos_Network π·ββοΈ π·ββοΈ .More updates on our consensus are coming soon.
@secparam @ittaia @stonecoldpat0 Good question. DiemBFT was based on Hotstuff. In Aptos we moved to Jolteon, which is a hybrid between Tendermint and PBFT. π.π§΅.
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It is so rewarding to see all the research and engineering work we are doing at.@AptosLabs translating into revolutionary numbers: . π»30k peak TPS.π25k sustainable TPS.πBillion txns in 24 hours.π€―Million limited collection NFT minting in 90 seconds. π.
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AptOS is going to change the way we think about building in Web3. It will completely change the game. Remember Aug 17, the day you first time heard about the future! π
ππ.
π Something big coming for Aptos.Follow @zekun000 @SashaSpiegelman @sherry_apt and watch for π₯.
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Happy to share that our soon-to-be-deployed consensus, Shoal (our latest word after Bullshaek), was accepted to appear at FC 24. Come to Curacao to meet the team and hear our plans to slash consensus latency on @Aptos_Network.
If youβve followed DAG-BFT research and enjoyed DAG-Rider, Narwhal, and Bullshark, check out Shoal!. Shoal drastically reduces latency in these protocols by pipelining, leader reputation, and avoiding timeouts - 40% and 80% in failure and failure-free cases, respectively. ππ§΅
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Congrats to @avax!.I am definitely going to use this service. Thank you!. We need more of these use cases unlocked.
.@Avax just announced California DMV is launching its own chain on Avalanche and has already digitized 42M car titles onchain π. That's. a pretty huge deal. These are the type of real world use cases that crypto needs to have to easily onboard millions of people. I (like many.
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Walked this morning to the @AptosLabs office and thought: "I have the best job in the world":. 1. Working with friends,. 2. Who happen to be among the smartest people I know,. 3. On cutting-edge research,. 4. Thatβs deployed in production,. 5. And used by millions globally.
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So motivating to see another Blockchain using our research and technology! . Honestly, I never thought that the Jolteon consensus protocol would have so much industrial impact. Very happy :). But please fix your docs π the last version of DiemBFT has nothing to do with Hotstuff.
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"The limit of my language is the limit of my world". Move 2 is here! .By the Move guru and co-creator @wgrieskamp. Only on @Aptos
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BREAKING: A Breakthrough in Blockchain Architecture!. TLDR: 20k tps with sub second e2e latency!. Aptos has done it again π«‘.
Meet β‘Zaptos: The Blockchain Pipeline Architecture For Optimal Latency. 1/10.TL;DR 20,000 tps with end-to-end sub-second latency! . Zaptos is a new parallel pipelined blockchain architecture that slashes end-to-end latency, while maintaining high throughput by maximizing
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Today @rgelash and I are celebrating 1 year at @Aptos_Networ π₯³ .This was an amazing year for me! Personally and professionally. For sure the best I had in my career. @moshaikhs, @AveryChing I am grateful for this opportunity and the trust they have in usπ.
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Starknet joins the party and deploys BlockSTM! Congrats π. Join us tomorrow to discuss dynamic parallelism and the future of parallel execution.
Starknet v0.13.2 is live on Testnet and coming in a week on Mainnet β‘. Why is this a big anon?. Parallel Execution.Right now, Starknet and most blockchains process transactions sequentially, meaning each transaction is handled one by one, with every transaction waiting its turn
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If you are new to Web3 and want to understand the underlying tech, check out @Aptos_Network. The only Blockchain that makes an extra effort to share knowledge with the community via academic papers, blog posts, talks, and more. All the novelty we do is open & peer-reviewedπ.
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This is how I like my mornings to start!.I wish I could go in person, and finally meet in-person my amazing co-authors.
Narwhal & Tusk got a best paper award at EuroSys! joint work with @GDanezis @LefKok @SashaSpiegelman
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BREAKING: A major BlockSTM feature is comingπΈπ€. If you are excited about Dynamic Parallel Execution, mark your calendars. Soon. Very soon!πππ. Get ready to unlock the next generation of Web3 usecases. #onlyonaptos.
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Bullshark, the next-generation BFT consensus is here! Forget about the leader-based approach: no view-change or view-synchronization is needed. The first DAG-based fast path with an asynchronous fallback. w. @alberto_sonnino, Neil Giridharan, @LefKok.
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@moshaikhs Thank you @moshaikhs for everything you have done for Aptos Labs and personally for me. I will miss you at the office and at the court and wish you all the best in your next chapter. I hope we will work (and play) together in the future again!.
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True decentralization on @Aptos_Network π€©. (But you can't hide from @sherry_apt π
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Who is the node operator behind the node address `0x34636. f5dd`? Your Aptos validator is broken, it's not participating in consensus thus not making any staking reward, please reachout if you see this. we can helpπ₯².
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We had much fun comparing BlockSTM notes with the @Starknet team today. Thanks @VolokhIlia and Noa for having usπ€.
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Finally got to see the people behind the accounts. Love this Experience π.
Meeting my heroβs is so surreal. @zacharyr0th @Greg_Nazario @SashaSpiegelman. @ValeBrent the amount of people that have come and given me hugs because you told them to is insane! Ily bro!
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Privacy. Security. Lighting speed infrastructure. Join us on Thursday to be the first to learn about the next iteration of the Blockchain technology.
@Chase_Teron @nameless_nyc @mereo_xyz Day 1 -13:30pm KST | High Performance Finance Meets Privacy on Aptos. @SashaSpiegelman, Head of Research @AptosLabs, delves into how these two pillars of Aptos blockchain excellence are paving the way for a secure and efficient financial ecosystem. #ExperienceAptos
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Proud to be part of a company whose leaders truly care about the space. We are here for the long run, we are here to build the new internet.
APTOS FOUNDER MO SHAIKH APPOINTED BY CFTC TO JOIN DIGITAL ASSETS SUBCOMMITTEE . - The US Commodities Futures Trading Commission (CFTC) has officially added @AptosLabs founder Mo Shaikh to the Digital Assets Subcommittee. - The subcommittee falls within the Global Markets
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Some chains talk, and some chains work. Aptos has unparalleled performance. Bonus: A few significant latency improvements under high load are on the way.
@Aptos blockchain has been processing more than 4.1k TPS now, and it just feels yet another day! The end to end latency has been mostly below 1.7 seconds.
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Heading to FC'24!.If you are around, come meet us (@rgelash, @ibalajiarun, and myself) to discuss parallel execution, modern consensus, on chain randomness, and everything around it. BTW, the pina colada offer is still on the tableπΈπΉ
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Who wants to build a tipping system on @Aptos for impactful research?. This can give great incentive for bright minds in academia to work on hard and relevant problems, rather than overselling incremental low hanging fruits. Win win for everyone. DM if you are serious.
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Follow the Tech.
Hundreds of top builders from around the world joined us for the Aptos Experience, a two-day journey into the heart (& Seoul) of Web3 π. This is your #ExperienceAptos guide to all the technical alpha revealed on-site. Thank us later, anon π«³.
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Hi @AveryChing, if Aptos keeps doubling the daily transactions record every 3 months, can we get 1B before Santa comes?.
BREAKING π₯: L1 industry record broken (again) by @Aptos on May 25 for the most daily transactions (154.4M/day) as reported by @artemis__xyz. This beats the previous record set (also by Aptos) on the day before (May 24 - see β¬οΈ) by >59%. Same low fees, high success rate, no
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I heard the stock market is coming on chain. We will need >10k tps with <1 s latency. Aptos is ready. What about you?.
Happy 2 billion txns @Aptos. Over a year ago, Aptos previewnet proved it could sustain 2 billion txns in a day (>25,000 user tps for 24 hours). In 2025, we will see devs take advantage of unused block space and researchers will grow it even further. Web3 is still early.
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Another fun day at the office. The journey continues!. Next year is going to be the best yet, and the worst among all the ones to follow.
thanks y'all for joining the Aptos two-year Spaces jam yesterday, the vibes were immaculate. now back to the office, and a PSA from @SashaSpiegelman ;)
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Claiming sub-second latency for all txns types is one thing. But seeing it on a graph is absolutely beautiful. #onlyonaptos.
1/ π¨ BREAKING: Over the past 30 days, a series of improvements have been made to the @Aptos network, which now has end-to-end, sub-second latency ποΈ
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Educational thread to finally fix the historic misunderstanding of Tendermint. Thanks, @zarinjo and @ittaia, for the interesting discussion.
@zarinjo @SashaSpiegelman @valardragon Hotstuff paper claims in Tendermint, leader rotation needs to wait for one network delay. Are you saying Hotstuff does not describe the Tendermint protocol correctly?
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Indeed. So much stuff is coming in 2025. I am excitedπ€ .
@korayakpinarr @SashaSpiegelman @fede_intern @0xrinegade @solana @SuiNetwork Shoal++ is the King and yet @SashaSpiegelman still wants rAPTr to be builtβ¦.
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First year, you learn to walk. Second year, you learn to talk. Third year, you _______.
good vibes and (ΒΏΗqΚΙΙ―) some alpha with @AveryChing and team at the Aptos 2 Year Anniversary Celebration tmr: Wed Oct 16 @ 9pm ET. don't miss it, notis on:
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Aptos is much more than just the best infra in town. Check this is out. One minute of your time, and you are ready to build.
Meet the revamped Aptos Docs, designed to empower developers at every stage of their Web3 journey. Whether you're just starting out or building complex dApps, there's something new to discover. (1/2)
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People can lie; numbers don't! .Look at this beautiful chart comparing real mainnet data. Enough with the misinformation spread - Aptos is the fastest blockchain. Period.πβ‘οΈπ.
1/ Aptos is setting a new standard as the first blockchain to achieve sub-second end-to-end (E2E) latency π₯. Thanks to a series of performance and latency improvements by the Aptos Labs team, Aptos is the fastest blockchain on the market with truly instant transactions.
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Aptos Move and Sui Move are not the same. A co-creator of the original Move explains some of the Aptos' unique features.
@BL0CKRUNNER Let me point out here before people confuse Sui with Move: some of the issues the original blog states are specific to Sui Move and are not present in Move in general as used at Aptos. Others are being in the process of being changed. Upgradability. On Aptos Move contracts can.
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@Justin_Bons Narwhal is not Sui's. It was developed at Novi by researchers who are now both at Aptos and Mysten. Moreover, the only Blockchain that is currently using Narewhal is Aptos. Sui gave up on the "paradigm shift in blockchain design" to gain better latency under low load, while.
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Time to upgrade. BlockSTM V2 is loadingπ.
Underrated fact that @Aptos is one of the most influential tech stacks in crypto, after EVM. It's an honor and something we are committed to continuing with Move, RAPTR and other innovations to be introduced in the next yearπ«‘. Cheers to our friends at @flow_blockchain
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A stable MOVE!.
1/ Tether Lands on Aptos!. @Tether_to is bringing $USDt, the worldβs leading stablecoin, to the Aptos blockchainβmarking a major first for the Move ecosystem. This isn't just another integration; itβs a leap toward building the new economy on Aptos.
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A great example of the Aptos Research vision!. We don't waste time on overselling and publishing incremental results. We focus on making Aptos the best, and we see our research all the way to production. We are so fortunate to have @alinush407, second to none on both code.
𧡠@AptosLabs taught me the challenges of going from _idea_, to academic paper, to production-ready implementation and, finally, to deployment!. π² A perfect example is our *instant* on-chain randomness in Move, or @aptos Roll: Let's look at the ideaπ‘!.
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Like in every great trilogy, it took 5 years, but it is finally here!. From the creators of Move. Move 2!. Coming soon #ExperienceAptos.
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Implementing your research is fun. Debugging distributed systems is less. But once you find your crazy race, it is so rewarding π₯³. One strep towards the fastest consensus in the industry!. Crazy new ideas are coming, stay tuned! .Move fast, pay less. Only on @Aptos_Network.
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If it is creative, it is on Aptos. Love @EconiaLabs !.
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The day we become one unbeatable teamπ€©.
Aptos team spotlight time. Meet @SashaSpiegelman, Head of Research at Aptos Labs. I first met Sasha for coffee in Menlo Park, California, at 7 a.m. on a December morning. @rgelash was there too, and greeted Sasha with a hug, as Eastern Europeans do. So, I followed suit with a
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Some chains talk, and some chains work. Bonus: check the latencyπ€―.
Aptos tech is crushing it. Yesterday saw:. ~50x more daily txns than Ethereum (L1) .~10x more daily txns than Base (L2). bots or not (this is a permissionless network after all) letβs be honest, how many chains could have handled a spike like that?. Aptos handled the volume surge.
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All the companies you have mentioned are implementing @Aptos_Network's BlockSTM. And we are cooking so much more at @AptosLabs π¨βπ³ .Revolutionary technology for parallelism is coming very soon!.
2024 will be the year of the parallel evm - rooting for everyone working on this problem incl. monad/sei/polygon and other teams that I forget. also excited for our own internal efforts there and pushing the boundaries on database design.
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@CryptoIsCute Aggregators to the rescue π.Our latest pride, hot from the oven, only on @Aptos_Network!. Design exactly for these usecases and coupled with BlockSTM to provide parallelizm where it seems to be impossible.
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The endgame of high throughput low latency blockchain design!. π€.
simple, elegant, while optimal. this is what weβve been looking for since 2018. after so many iterations, jolteon, decoupled execution, quorum store, order vote, raptr etc, weβre finally here - the end game of high throughput low latency blockchain design!.
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Just deploy on Aptos. We are ready for your traffic π.
Apps are now recovering. We had modeled a ~10x surge in traffic and load tested it. This exceeded that number. It's expensive to keep services over-provisioned, but we'll need to keep working on auto-scaling solutions, and killing any remaining bottlenecks. Thank you for.
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Really? .I thought they simply don't believe in decentralization. Why else they hide tokonimics distribution and have majority of validators' stake around Europe?.
why doesn't @SuiNetwork have on chain governance? the answer may surprise you. the answer is @SuiNetwork doesn't have on-chain governance because sui doesn't support move scripts
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The answer is YES.
one of the more boolish updates from Aptos Experience that you may have missed in all the buzz is the release of RAPTR. the current e2e latency/finality on Aptos is ~800ms with low load. With RAPTR, Aptos will be able to achieve similar latency while supporting a MUCH higher
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We are expanding our Research. If you are looking for a place to have fun, collaborate with sharp people, and do impcatfull research join us at @AptosLabs to build the future of web3. Some examples in the thread:.
1/ Today, we announced our $150M Series A funding round. This is a testament to our team's technical expertise, the strength & activity of our ecosystem and the vision & ethos we all share.
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Today you think this post is too long. Tomorrow you will read every word twice. Aptos is redesigning global trading. I have not been that motivated since mainnet launch. LFM! . Thanks @LoganJastremski and @alnoki_ for the great discussions yesterday!.
The multi-leader blockchain endgame: competitive information inclusion as a self-reinforcing mechanism for global price discovery - how we got here, and why @Aptos is leading the charge . Onchain trading is the killer app.In the nine years since the launch of programmable
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Still trying to decide between Aptos and Sui?. Flip a coin πͺπ². On @Aptos_Network ππΉπ€―. @XiangZhuolun explains why our Randomness is the only PoS secure available.
Aptos Roll, the very first secure and instant on-chain randomness API for PoS blockchains, only at @Aptos_Network . Curious about the technical details behind the scenes?.We have a blogpost for you! Here is my take on the design:.
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Moving on to the future.
Day 2 - 13:30pm KST |Β Move 2: The Future of Move on Aptos is Here. @wgrieskamp, Head of Move Language & Tools @AptosLabs, shares whatβs next for the Aptos programming language. Beyond a network update; this is a builder revolution π #ExperienceAptos
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High-quality content is sometimes hard to find. Follow @JouleFinance for more.
1/𧡠ππ¨π―π ππ π¨π« ππ¨π¨π¬π ππ πͺ. Learn about Move, a blockchain language that's all about security and efficiency. Read our latest blog to discover how it's changing the game @Aptos .
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It was a pleasure presenting our recent work on Bullshark and the DAG based approach at @a16zcrypto. Thanks for editing and sharing the video:).
@AndrewLewisPye2 And here's a video from @SashaSpiegelman who provides an overview of recent developments in the theory and practice of DAG BFT consensus. Sasha discusses how the Narwhal protocol decouples data from meta to build a highly efficient DAG. & much more.π¬.
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