The fee-on-transfer bug that locks funds forever (with a working PoC)
Last week I found this pattern in a real audit. I can't name the protocol — it's under responsible-disclosure until the program confirms a fix — but…
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How to Rehearse Smart-Contract Rollback Before Calling a System Upgradeable
A smart contract can accept a new implementation and still have no safe route back. The upgrade transaction may succeed, the old bytecode may remain…
Hedera's EVM speaks tinybar, its RPC speaks weibar, and both mistakes return SUCCESS
I lost most of a day to a bug that never once failed. I was building a contract that pays for its own future: an access subscription that re-arms it…
Yul Dark Arts: Understanding the EVM from first principles
In this article, I want to walk you through my experience learning Yul to better understand how the EVM manages memory and how you can use this to y…
Redbelly Network Troubleshooting Guide: 22 Common Developer Errors and Their Fixes
Redbelly Network Troubleshooting Guide 22 common developer errors, with the exact command that fixes each one. Redbelly Network is an EVM-compatible…
5 false positives your Solidity scanner is probably reporting right now
Every automated Solidity security tool has the same disease: it cries wolf. Run one on an audited protocol and you get 600 "findings," 98% of which…
My smart-contract scanner reports almost nothing — and that's the whole point
Most Solidity security tools have the same failure mode: they cry wolf. You run them on an audited protocol and get 600 "findings," 98% of which are…
Qwen2.5-Coder vs DeepSeek-Coder for Solidity Review: What I Actually See Locally
I keep a folder of ten small Solidity contracts with bugs I planted myself: a classic reentrancy in a withdraw function, a missing access modifier o…
Dev Log 07: Mitigating RPC Latency Desyncs During Polygon Hard Forks
Maintaining real-time transaction tracking layers across a multi-tier infrastructure requires seamless node data synchronization. During heavy netwo…
I ran my Solidity scanner on 6 top-audited DeFi protocols. Every 'critical' was a false positive — here's why.
Most Solidity scanners are high-recall, low-precision. They flag 40 things, 38 are noise, and after the third report you stop reading them — so the…
Dev Log 06: Designing Reentrancy Guards and State Locks in Staking Pools
When building our live core liquidity tiers ( hNobtStaking and BroilerPlusStaking ) on Polygon Mainnet, preventing transaction-ordering dependencies…
I'm Entering My First Sherlock Audit Contest: The Setup, the Plan, the Fear
I have shipped software for 18 years. Roughly 8 of those in crypto. And this week I signed up for my first Sherlock audit contest, and my hands were…
MythX shut down in March and nothing replaced it so I built something
If you were using MythX before March 31st, you already know. ConsenSys quietly sunset the entire MythX suite. One day it was there, the next your CI…
Shipping a Solidity contract to mainnet? Do this 20-minute self-check first
You built something. Tests pass. You're days from mainnet. Before you either skip security entirely (please don't) or spend weeks lining up a full a…
I ran my Solidity scanner across the 10 most-audited codebases in web3. Here's every flag.
The dirty secret of automated smart-contract security tools isn't that they miss bugs. It's that they cry wolf. Point a typical static analyzer at a…
7 ways to drain an ERC-4626 vault (and how a good protocol closes each one)
Based on real audits of production vaults and AMMs. A tokenized vault (ERC-4626) looks simple: deposit assets, get shares; burn shares, get assets b…
I built my first Robinhood Chain app as an index basket
I built a small index basket app on Robinhood Chain because I wanted to understand the developer path from the first contract deploy all the way to…
The Tether Paradox: Shitty ERC-20s, OpenZeppelin, and the Unstoppable Web
I have a confession to make. When I first saw that Tether—the behemoth behind the $110 billion USDT stablecoin—was the primary financial backer of H…
Signature Replay Attacks in Solidity: The Bug That Looks Correct
Some smart contract bugs scream at you. A missing onlyOwner , a reentrancy with the state update after the transfer. Signature replay is not one of…
The Token Is the Least Interesting Part of Tokenization
"Most tokenization discussions stop at the token. In reality, the token is often the simplest component of the entire system." There is a moment tha…
Reentrancy in 2026: Why It Still Drains Millions (and How AI Spots It)
Reentrancy is the oldest trick in smart contract exploitation. The DAO fell to it in 2016. You would think a bug this famous would be extinct by now…
Foundry Invariant Testing: Finding Bugs Fuzzing Can't
Your fuzz tests pass. Your unit tests pass. Coverage is green. Then the protocol goes live and someone drains the vault with a five-transaction sequ…
A .NET Dinosaur in Web3. #1
A .NET Dinosaur in Web3 — Day 1: First Smart Contract I've been writing .NET for many years. Today I deployed my first smart contract. Here's what a…