Hari (@hrkrshnn) / X

Hari

4,517 posts

Hari

@hrkrshnn

@cantinasecurity @spearbit ceo // prev @solidity_lang, @ethereum

NYC

cantina.xyz/u/hrkrshnn

Joined June 2020

Hari
@hrkrshnn
Mar 14, 2025
This is why I left the Ethereum Foundation. There is a lack of a clear and cohesive vision for Ethereum and EVM, making progress in EVM impossible. I've seen EVM changes repeatedly shut down because they don't check a certain box. The issue is that everyone has a different
sudo rm -rf --no-preserve-root /
@pcaversaccio
Mar 13, 2025
Ethereum is turning into a labyrinth of unnecessary complexity with EOF - Let's reconsider EOF. ethereum-magicians.org/t/ethereum-is-…
194K
Hari
@hrkrshnn
Apr 12, 2025
PSA: If you're using `tx.origin == msg.sender` to prevent smart contracts from interacting with your contracts, please read this. The next Ethereum hardfork (Pectra on May 7th) includes a change that allows you to work around this check (EIP-7702). If you built your smart
65K
Hari
@hrkrshnn
Mar 13, 2025
All crypto conferences this year should be held in NYC. It is the city with the highest concentration of crypto talent. We're setting ourselves up for failure by hosting events in exotic locations.
77K
Hari
@hrkrshnn
Dec 26, 2024
Client diversity on Ethereum was a mistake. It forced Ethereum to become ossified. Every change today involves multiple stakeholders, each competing for the scarce resource of what goes into the next hard fork. The governance process ultimately has no way to resolve tiebreaks.
226K
Hari
@hrkrshnn
Apr 3, 2025
How to succeed as an independent security researcher: 1. Choose one goal for the next 12 months: focus on either learning or earning. This will provide clarity and enable you to get what you want. 2. Play the long game: One week's winnings or a single audit doesn't define you,
24K
Hari
@hrkrshnn
Apr 26, 2025
Who is ready to do a 1001 day challenge on Cantina? Lock in for one thousand and one days with a goal of earning a million dollars. I genuinely believe that anyone can start from zero and get there. Godspeed 🫡
59K
Hari
@hrkrshnn
Apr 1, 2025
PSA: Please don't fork Aave's codebase and launch it on a new chain. You are very likely to get hacked if you do. It can look very tempting: there's a new chain, and you see that no lending market is available. Fork Aave, onboard all the top assets, set whatever risk parameters
34K
Hari
@hrkrshnn
Jul 11, 2025
Working inside Solidity taught me something counterintuitive about building successful products. Solidity has around 90% market share for smart contracts, effectively a monopoly. This puzzles people. How did a language modeled after JavaScript, often considered "inferior" to
Solidity
@solidity_lang
Jul 9, 2025
We're thrilled to be celebrating 10 years of Solidity! Let's look at some highlights from the past decade and get a glimpse into the future. 🧵↓
27K
Hari
@hrkrshnn
Jun 11, 2023
An unfortunate downside of 1559 and the merge is that it killed the idea of 'clean ETH'. Pre-1559, one can get 'clean ETH' by 1. finding an arbitrage in the network, 2. write a contract that executes it in the constructor, 3. forward a portion of the arbitrage to the miner,
Toni Wahrstätter ⟠
@nero_eth
Jun 11, 2023
With EIP-1559, zero gas transactions are no longer possible. Together with @lightclients and @gballet, we reintroduced them by implementing a PoC for a gas ticketing service. It uses blind signatures to fund unfunded accounts in a privacy-preserving way. hackmd.io/@Nerolation/rk…
120K
Hari
@hrkrshnn
Mar 11, 2025
I run the largest security company for crypto, and I see builders working on their projects 3-6 months ahead of time. The last three months have been the biggest I've ever seen. Many high-quality builders will soon ship to mainnet. The price goes up and down, but this year's
18K
Hari
@hrkrshnn
Apr 16, 2022
Instead of teaching kids how to count, teach: 1. axioms of set theory (ZFC), 2. how to construct natural numbers with Peano axioms, (constructing integers and rational numbers are now trivial) 3. how to construct real numbers from rationals using Dedekind cuts.
Hari
@hrkrshnn
Apr 14, 2025
Who wants a degree from Cantina? $15M in winnings: You earn a PhD $5M in winnings: You earn a Master's $1M in winnings: You earn a Bachelor's $100K in winnings: High School Meritocracy at its finest. We don't care who you are, where you come from, or what you look like.
Hari
@hrkrshnn
Apr 13, 2025
At some point, every company needs to invest in young talent. I'm incredibly thankful for the young security researchers competing on Cantina. Some have even left school to be fully locked in. Should we offer them a Cantina degree?
16K
Hari
@hrkrshnn
Apr 12, 2025
The next thing to study is Rust 🤫 Don't miss out 🫡
37K
Hari
@hrkrshnn
Apr 21, 2025
Ethereum: builds one of the most successful execution environments in the last 10 years. Also Ethereum: let's throw it away 🤷‍♂️
14K