tzinas Profile
tzinas

@ap_tzinas

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Building at @CommonPrefix

Athens, GR
Joined October 2021
Don't wanna be here? Send us removal request.
@CommonPrefix
Common Prefix
1 month
Everything runs on ledgers — from banks and governments to entire economies. Blockchains can transform them into a global, scientific system of trust. Watch @dionyziz keynote “The Vision of Blockchain” (Panathenea 2025, Athens). 1/3
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@CommonPrefix
Common Prefix
1 year
Proving an Ethereum PoS block's ancestry is hard. Verifying predecessor blocks without downloading all of Ethereum's ~200MB Beacon state is far from trivial. Inspired by @lodestar_eth's proving API, we built a Rust library that simplifies proving the lineage between two beacon
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@CommonPrefix
Common Prefix
1 year
We're looking to onboard Senior Software Engineers with blockchain experience: https://t.co/bt6qwNFrQs If you think you're a good fit, please email your CV, GitHub handle, and transcript (if you graduated within the past 5 years) to ops@commonprefix.com.
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commonprefix.notion.site
Common Prefix is seeking a full-time Software Engineer.
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@CommonPrefix
Common Prefix
1 year
Our team will be flying over to Brussels to attend @EthCC and @modular_summit, coming up in a few days. DM us if you'll be there and would like to talk!
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@CommonPrefix
Common Prefix
1 year
CJ taking the stage at @xrplapex, talking about @axelarnetwork and the upcoming integration with XRPL.
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@CommonPrefix
Common Prefix
1 year
We've curated our researchers' publications: https://t.co/erifQ7mjpg. Evidently, our scientists have been busy. Happy reading.
commonprefix.com
Common Prefix is a team of scientists and engineers researching and implementing blockchain protocols.
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@CommonPrefix
Common Prefix
1 year
PoW vs PoS: Can wealth truly replace work in securing blockchains? Let's dive into why Proof-of-Work may be the key to more robust and secure blockchain systems. 1/5
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@CommonPrefix
Common Prefix
2 years
In the past year, we've collaborated with @babylon_chain on their mission to bring Bitcoin Staking to the world: stake your bitcoins right from the Bitcoin chain and help secure the Cosmos ecosystem! 🧵 1/4
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@CommonPrefix
Common Prefix
2 years
For those who couldn't make it in person, here's the recording of @shresth3103's talk:
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@CommonPrefix
Common Prefix
2 years
Shresth (@shresth3103) giving a talk at #zksummit11 about common pitfalls and optimizations for modern cryptographic protocol implementations.
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@CommonPrefix
Common Prefix
2 years
The Common Prefix team is in Athens for ZK Summit, by @zeroknowledgefm. Looking forward to discussing all things Zero Knowledge with the thought leaders of ZK research and implementation!🪄
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@CommonPrefix
Common Prefix
2 years
Decentralization is the fundamental concept underpinning all blockchain systems. But what does this mean and how do we measure it? Christina (@_LadyChristina_) explains in her talk at FC'24, presenting joint work with @sol3gga & CP's @dimitKarakostas: https://t.co/qAubGjYFbi
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@CommonPrefix
Common Prefix
2 years
This property was suspected but never proven before. Yet, billion-dollar DeFi protocols rely on it for their safety, e.g., in dispute period durations. The exact parameters are calculated in this paper: https://t.co/WXwANyTnv7 2/2
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@CommonPrefix
Common Prefix
2 years
Apostolos (@ap_tzinas) presenting "On-Chain Timestamps Are Accurate" at FC'24. This joint work with @dionyziz and @ssrivatsan97 proves that timestamps of blockchain blocks do not deviate from real-world time, even in adversarially-produced blocks. 1/2
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@CommonPrefix
Common Prefix
2 years
Our very own @dionyziz presenting "Light Clients for Lazy Blockchains," a paper describing how to construct a light client for "optimistic" chains like @CelestiaOrg. A collective effort alongside @ErtemTas, @dntse, and @yangl1996. 1/2
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@CommonPrefix
Common Prefix
2 years
Kudos to @trailofbits for the great work, highlighting the gap between research and application. Checking the degree of the sharing polynomial might seem "obvious" to the cryptographer, but not to the engineer. This underscores the need for "translational cryptography". 1/4
@trailofbits
Trail of Bits
2 years
We’ve identified a DoS vulnerability in implementations of the Pedersen DKG used in a number of threshold signature schemes. This flaw lets a malicious actor manipulate the key generation threshold, potentially invalidating signatures or breaking the key.
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@zetavar1
Zeta Avarikioti
2 years
Looking for a PhD position in blockchains? Time to join our Security & Privacy group at TU Wien! Apply here: https://t.co/ELtMfmlq5d @matteo_maffei @SecPrivTUWien
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@shresth3103
shresth
3 years
Today, we are announcing "Kevlar" ( https://t.co/XA534c7xDa), a tool that makes Metamask, or any RPC-based wallet, completely trustless! Kevlar first runs a light client to quickly sync with the beacon chain and then starts a local RPC proxy that you can add to your wallet
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github.com
Light client-based RPC Proxy for PoS Ethereum. Contribute to commonprefix/kevlar development by creating an account on GitHub.
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