Daniel Luca 🦄
@cleanunicorn
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Tech VC @edenblockvc | Dev, Security, Investor | ex @fiatdao , @ConsenSysAudits , @alethioethstats @consensys 🦇🔊
Romania
Joined December 2007
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Problem: You feel smarter than anybody else you meet.
Solution: Go to an Ethereum conference.
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Solidity advanced tip time.
When extending or inheriting a few contracts, the order of inheritance matters.
I will explain below, with a proof of concept.
🧵👇
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🦼 Solidity's `try/catch` has a catch.
And you probably don't know about it.
Short and sweet thread about this Solidity feature.
🧵👇
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This weekend I visited Sibiu, which is the home base for
@ElrondNetwork
Naturally, I wanted to meet in person as many people as I could from the team and we had really interesting conversations.
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The problems with Ethereum:
- Best minds in blockchain? Check.
- Largest dev community? Yep.
- Superior tooling? Absolutely.
- Most decentralized network? Indeed.
- Energy efficiency? Top-notch.
- Overflowing with dapps? You bet.
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How to anonymize Ethereum requests and protect your identity.
We all have the right to privacy.
Here's a tool that will help you stay anonymous:
🧵
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Hot take: Solidity is a great language to write tests in.
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There's an algorithm that can be used to randomly shuffle an array on-chain.
This algorithm is known as Fisher-Yates Shuffle or the Knuth Shuffle.
🧵👇
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This is a really good resource for EVM opcodes.
👀 List of opcodes, what the do and examples
⛱️ Sandbox to see how code is compiled to EVM
And the story behind the product.
👇
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I found a problem with the current WebSockets implementation in 🐍 Python, but the owner doesn't want to implement a fix because he doesn't like Bitcoin.
I'm using it for Ethereum, of course. 😭
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I'm learning ZK by playing with
@MinaProtocol
, the 22kb ZK blockchain.
Getting started was easy, and the experience is polished--but during this process, they upgraded the testnet with breaking changes.
Keep reading for some highlights 👇🧵
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On my flight back, the guy next to me, who runs an international publication, told me there are a bunch of financial primitives being developed in the Ethereum ecosystem.
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Found a mainnet re-entrancy flaw and I exploited it.
Been sitting on this secret like a hen on her egg; it's time for the reveal!
Watch the exploit in action, bending the chain to its will.
Time for you to conquer this technique too! 🔧🧠
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Solidity's try/catch doesn't deliver on its promise.
If the target is an address with no code (EOA), the execution reverts.
Solidity's try/catch does not protect you from reverts but causes the revert itself.
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Just got an airdrop of 298,131 XCH tokens.
When I looked into the project a bit, I found out they are a scam.
Let me walk you through.
🧵👇🏼
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🛞 I have redesigned my dapptools-template to run on foundry, renamed it and it's much faster and cooler now.
I'll explain how it works, features and how to use it
🧵👇
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ZK is inevitable, $CULT is here to deliver again.
$CULT is inevitable.
With
@ModulusZK
, we have now entered a position of infinite leverage to become one of the top projects in crypto.
As project on Modulus grow = CULT benefits
It all circles back to the DAO.
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🚨 Rug pull / Scam alert 🚨
Don't trade $DZHV (0x3419875b4d3bca7f3fdda2db7a476a79fd31b4fe), don't ape in.
A friend asked me what I thought about this token, and I had a look.
I saw a good attempt at impersonating a genius coder with a rug pull mechanic and market manipulation.
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We will release our latest white paper soon™️.
Until then, here are some essential things about
@fiatdao
🛎️🧵👇
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Just witnessed the Multichain hack and it's clear that this is merely the starting point in a series of similar unfortunate events. We're dealing with a landscape where companies are utilizing libraries that apply techniques and technologies, the intricacies of which are beyond
The lockup assets on the Multichain MPC address have been moved to an unknown address abnormally.
The team is not sure what happened and is currently investigating.
It is recommended that all users suspend the use of Multichain services and revoke all contract approvals
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More people should know about
Here's
@transmissions11
quickly presenting most of the features.
Feature list 👇
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I just created a pull request into
@MetaMask
to add to the blacklist.
Help me get this through quickly! We need to protect the users.
@danfinlay
@kumavis_
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Drop your .eth name below and I won't add you to a list or give you any NFT.
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You can manage SSH keys in your Mac's Secure Enclave.
This is a tool that I use to protect my private keys without plugging anything into my laptop.
Here's how!
👇 🧵 1/2
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It seems we can concatenate strings and bytes.
I missed this feature in the release notes until now.
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$1k/month:
"I'm a developer."
$5k/month:
"I'm a PHP, Ruby, Go, Solidity, TypeScript, JavaScript, Node.JS, Rust developer. Rockstar developer here."
$20k/month:
"I do tech."
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Working on a
@nymproject
Ethereum RPC mixer. Just received the first successful response back.
Need to clean up the code and publish this now.
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I also met a
@wearecultdao
guardian who is building really cool things with their team at
@IRLart__
Check out the cool things they build in the metaverse. If you weren't at the conference you can virtually be there using their creations.
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Time to start making public the details about FairWin.
🚩 tl;dr Do not send ether to it, it's a scam wrapped in a Ponzi scheme.
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It’s been two weeks since I partnered with
@lior_eth
on this incredible ape. The colors of the trees look different. Feeling apeish.
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I had a very surprising ETHBucharest, very intense, like no other conference.
I met a lot of great people and hopefully made a few new friends.
Next
@ETHBucharest_
should be greater.
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Can we please stop using LSD for liquid staking derivatives?
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This is the biggest upgrade for Smart Contract developers coming up this year.
It's called Transient Storage (EIP-1153), and it's not obvious how it should be used and what it's good for.
This is why I started researching it.
👇
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I just saw this tweet from Solana where they say 400,000 tps.
It's true that in order to have transactions "per second" you need to process them. The problem was the transactions were in the queue, not yet processed.
1/ Solana Mainnet Beta encountered a large increase in transaction load which peaked at 400,000 TPS. These transactions flooded the transaction processing queue, and lack of prioritization of network-critical messaging caused the network to start forking.
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If I ever sell my crypto I won’t tell anyone.
But there will be signs.
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We just audited (with
@andreiashu
) the new Sigma Committee Timelock feature
@ndxfi
will be launching soon.
The plan is to create a new committee that has 600k $NDX tokens with the power of creating new indexes.
@d1ll0nk
@xGozzy
@0mllwntrmt3
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I just presented this at
@nft_bucharest
but I want to make it available for everyone because it's so important.
It might make me unpopular, especially with the Ordinal fans, but
𝓑𝓘𝓣𝓒𝓞𝓘𝓝 𝓞𝓡𝓓𝓘𝓝𝓐𝓛𝓢 𝓐𝓡𝓔 𝓐 𝓖𝓘𝓐𝓝𝓣 𝓜𝓔𝓢𝓢
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I started using a new product a few weeks ago that saves me ether on each transaction.
It's brilliant how this works and how easy it is to use. Best of all, it's saving me gas. So far, I saved ~35% ether on my transactions.
👇🧵
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If you're a builder, these are the top mistakes you will make.
If you're a first-time founder, you'll probably make all these and many more.
Read this, and you might avoid some of them.
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We received lots of❤️🔥with our launch and even if there is more than $300 million staked () some people don't completely understand how the protocol works.
Below you can find a simple explanation you can share with your friends.
🧵
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Is there a crypto VC looking for a Smart Contract Dev / Security Auditor?
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Will my mutant be more valuable after being on screen in a BBC documentary?
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I finally have my hands on the merch. This is so smooth.
I really wanted to make the best of our brand, but not be too obvious. IYKYK
Limited number available at the event.
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Cryptocurrencies come and go but Ethereum is here to stay forever
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EIP-3074 introduces new features that improve Account Abstraction.
It also allows Relayers to serve EOAs (with EIP-4337, this is impossible).
Follow along to understand how this works.
🧵👇
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Obligatory
@VitalikButerin
talk
All is good with DeFi, it got us here, but to get further we need to do other stuff.
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I am getting interviewed for a BBC documentary on Wednesday.
It’s about crypto hacks and the idea behind “code is law”.
What is one thing I should say, and what is one thing I should stay away from?
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🏰 The DAO is activated
@fiatdao
🪅 900+ people stake in the DAO, roughly ~61%
🌉 Let's get this to ~99.99999%
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I'm giving away free access to a service that anonymizes your Ethereum requests and transactions.
But there's a catch.
You must 'like' this tweet, and I'll DM you the guide.
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🔥🌶️ I am saying all of this because everyone is thinking it, but nobody has the courage to voice it.
The Security Summit, is an event where security firms scramble to market their services, but it feels like an echo chamber devoid of any real clientele.
Thus, you're stuck
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I always have a 3 striped shirt in my background, so people know my timezone.
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Friday was my last day at
@Consensys
. It was a wild ride, but it's not over yet.
Had a lot of fun building
@AlethioEthstats
and being a security auditor for
@ConsenSysAudits
.
Most of all I am going to miss all the people.
BEST TEAM EVER!
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Pretty happy with the last 0xMonaco algo. Wish I had posted sooner.
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Fresh first look at the swag.
THIS IS RARE.
Lock your spot in for a chance to get one.
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If this is your team, you're scamming.
I just had a chat with a scammer trying to convince me
@StaniKulechov
@koeppelmann
and
@johnlilic
work for him.
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I am taking a break from work. Not sure how long this will be. Maybe just a few weeks. 2020 was really intense so far.
I am good, happy. I am in a privileged position that allows me to take this kind of sabbatical. I worked so hard to get here.
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I had a chat with a guy who’s got a great project.
Looking for investors, incredible growth.
He’s so cool, I was afraid to touch him.
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If you're in blockchain but don't know the complete history of Ethereum, you're missing out.
1/10 Ethereum Genesis 🌟 (2013-2015)
In 2013, a young programmer Vitalik Buterin proposed Ethereum. By 2015, Ethereum went live, revolutionizing the concept of blockchain beyond just
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me talking about my day:
▶ 🔘─────── 00:06
me talking about my vacation:
▶ 🔘─────── 00:17
me talking about blockchain:
▶ 🔘──────── 1:49:35
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Syncing A Full Ethereum Node Live
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First step in doing a security audit is to read the documentation. Find out what the project is supposed to do, what are the moving parts, how they should interact with each other.
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@pcaversaccio
balance = msg.value + previous balance.
Thus, `msg.value` can't be larger than `balance`.
It can, at most, be equal.
I like the `.transfer(balance + msg.value)`, enforcing the incorrect belief that msg.value is not included in `address(this).balance`.
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🎉 We can finally make this public! 🎉
Let's start the show!
@fiatdao
Together with
@el_nilz
@0xJohannes
@fiege_max
we can make this happen.
Lots more people who helped and are part of this. You know who you are. 😉
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These are the guys you need to stop if you want to destroy Ethereum security.
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🚀 We're examining 'Intents.' This groundbreaking idea aims to change how users engage with blockchain technology.
Co-written with
@ofir_eliasi
.
Dive into our latest article for insights. 🧵👇
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Meet Secretive!
I like the approach because it removes the key from my storage and moves it into something more difficult to hack, the Secure Enclave.
I have no affiliation with the tool, but I use it daily and wanted to share it with you.
2/2
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EIP-3074 AUTH and AUTHCALL. It will hit Mainnet soon.
Why is it important and how it will help us in the future.
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After the triumph of Shanghai and Ethereum's seamless shift from PoW to PoS, I wonder what new Ethereum FUD the Bitcoin maximalists are cooking up next?
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Join in the twitter space to observe the Ethereum Dencun upgrade.
Set your reminder and let's 🍿 together.
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The coffee shop I go to gives you these devices that beep when your order is ready.
Today, I made all of them beep at the same time. The staff started laughing out loud.
It turns out they don't rotate their keys.
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Tomorrow I am flying towards Denver. It will be a very long flight, something like 24h in total.
I am planning to watch some anime. What should I watch?
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It’s the official start of the event.
Come and join us.
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⏰ you wake up.
🦎you're still a lizard sunning on a red rock. it was all a dream.
📊 the concept of "depositing collateral to burrow stablecoin against it" is already losing its meaning as you open and lick your own eyeballs to moisten them.
🐞time to eat a bug.
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AI is hot, but for a good reason.
Here to teach us about AI we have
@fenbielding
and
@_grieve
from
@gensynai
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Come to
@ETHBucharest_
March 27 - 30
Reason
#2
:
I will take you to my favorite coffee shops.
Every Saturday, I go to BOB Coffee Lab with my 🐶 Corgi, Finney. He's currently training to be a barista.
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I found 2 Ethereum Web interfaces for any deployed contract.
Can you link others?
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Do you know how many functions match the 0x00000000 function signature?
Apparently A LOT
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When did it become okay to send audio messages to friends?
If I want to talk to you, I'll call you. Don't make me put on my headphones to listen to you rambling around the idea for 3 minutes.
Write down what you need to tell me and press send.
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People are researching how crypto wealth influenced consumption over time.
I've gone through the paper so you don't have to.
Here are some interesting facts. 👇
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Whenever I'm stuck on a coding problem, I post on Reddit, reply with a purposely wrong answer from a different account. People rush to correct! It's not just about help, it's about the thrill of setting things straight. Trust me, it works like a charm every single time!
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Experience
@ETHBucharest_
March 27 - 30
Reason
#5
:
Bucharest's architecture is a mix of historical and modern, just like Ethereum's evolving ecosystem. Find inspiration in our city's contrasts, from the grand Parliament Palace to sleek glass towers.
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Every important project I've seen started with a few very focused people, not with huge teams and lots of planning.
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Check it out yourself. It's open source, and it costs nothing to use.
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