Pietro Carta

$0TVL Hour had a clear winner, but it was a close call. Taulant Kryeziu (@taulantxx) from @twynexyz took the win at Stable Summit Cannes with a pitch that stood out on mechanism design, clarity, and execution. Laurens (@0xLaurens) from @polarisfinance_ finished as runner-up, and the judges had a genuinely hard time choosing between the two. Thanks as well to all teams who pitched and to the judges Petr Hluze (@petrhluze), Tesa Ho (@defin00b), Amina from @GnosisVC, and Pietro Carta (@ptrcarta).

Meet the judges for $0TVL Hour. Daniele Pinna (@PestoPoppa), Petr Hluze (@PetrHluze), Tesa Ho (@defin00b), Pietro Carta (@ptrcarta). Expect real scrutiny across mechanism design, risk, and liquidity assumptions, not surface-level feedback. 27 March · Cannes

ChainSecurity is hiring. A high-impact role—diverse, fast-paced, and built for long-term growth. Work with top-tier teams, travel globally, and become a key player in Web3 security. Know someone who fits? We'd love to talk to them! chainsecurity.com/jobs/sales-and…

The latest @TheSecureum RACE I designed has just wrapped up! 🏁 All challenges and solutions here: @trocher/ByQK9Vlnkx" target="_blank" rel="nofollow noopener">hackmd.io/@trocher/ByQK9…. If you missed it, go ahead and take 16min to test your @vyperlang knowledge!

@atarpara @optimizoor true for empty string: is7bitAscii(a ++ b) == is7bitAscii(a) && is7bitAscii(b)

Developers, we need your input! We're updating our solady/libstring.sol function to align with other lang. Currently, it returns true for empty strings, while others langs returns false. Should we return false by default for empty strings? github.com/Vectorized/sol…

What should you know before deploying on L2s? A talk by @ptrcarta at @ethbelgrade

🚨 Speaker spotlight! @ptrcarta Security Engineer at @chain_security will unveil two novel methods to manipulate on-chain price oracles based on AMM TWAP. Discover how these techniques exploit Ethereum mainnet consensus specs and L2 centralized FIFO sequencers.

📢 NEW SPEAKER ANNOUNCEMENT We're thrilled to announce the addition of more incredible speakers to our lineup as @ptrcarta is joining us. Pietro, a security engineer at @chain_security, will be talking about what you need to know before deploying on L2s.

Diving deeper into transient storage, @ptrcarta’s favorite topic, today at #Club3 meetup organized by @veryearlyxyz

Today at @EthereumZurich, @ptrcarta presented our findings related to EIP-1153 (Transient Storage)

@eth_call usdc and many other tokens are arbitrarily upgradable by the admin soooo

I'm a Tether truther, and this is my black swan:

@Amxx @eth_call less likely than my address being = 0x0, which seems to be commonly assumed false

@eth_call Its > 2**64 with probability 1/2**192. Said otherwise, there is guarantee that it is > 2**64, that is "just" extremely likely

Calling block.difficulty in Solidity now returns...

@nicksdjohnson @Amxx like 5% cheaper which is meh

@Amxx Are access lists actually cheaper? I thought they decreased runtime gas, but increased the static gas by an equivalent amount.

Ok, this attack is crazy. So you want to vote on a governor. This include a checkpoint lookup to find you voting weight when the proposal became active. This is an sload intensive operation, so you use an access list to pay less. 1/2

@AugustitoQ abuse makerAssetData in order. assumes ERC20 address in PMM but does more in ZeroExchange

@ThisNate @theori_io @paradigm_ctf Totally agree. Specially the Stealing-sats challenge!

This effectively makes # of unsolved challenges to be 0 for The Duck :) It was a fun weekend activity that allowed Theori researchers to show off their deep knowledge and strong skills in Web3 security. Thanks to @paradigm_ctf for hosting the CTF!

@z0age there u go buddeh I'll make it a dashboard for 10 ETH

Looking for a good way to quickly scrape OwnershipTransferred events & make followup calls to get all contracts currently owned by a given account Any good recommendations for sites or tools to use here? If nothing exists for this yet, you now have a 🔥 project for this weekend