What actually stays private on Midnight! (A builder's mental model)
Intro Coming from the XRPL, the challenge for me has been grasping what actually stays hidden on a privacy chain and how they acomplish that. On a tra…
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Building a Polymarket Trading Bot: Architecture, Execution, and Risk Management
How I built a real-time automated trading system that monitors BTC, ETH, SOL, and XRP prediction markets and executes trades based on short-lived pric…
The Smart Contract That Handles Your Money. No Bank Needed
The Smart Contract That Handles Your Money. No Bank Needed. By Srashti Gupta |Blockchain Developer This is the part where it gets real. Not "real" lik…
20 days into Solana and transactions finally make sense.
This is the summary of everything I have learned about transaction in Solana- Transaction are not just messages or amount send. Transaction contains m…
The contract is clean - for now: catching crypto scams that survive launch-time checks
Most token scam detectors, including the one I work on, share one implicit assumption: the contract you analyze at launch is the contract people will …
Building a Low-Latency Polymarket Bot for Earnings Markets: A Real-World Attempt (Lessons & Technical Breakdown)
A bot on Polymarket quietly extracted $32k in near risk-free profits by sniping “Will Company XYZ Beat Earnings?” markets. It waits for the official r…
Arc 7 Catch-Up: Building NFTs from First Principles
Arc 7 of 100 Days of Solana was about building NFTs from first principles. Instead of starting with marketplaces, profile pictures, or NFT culture, th…
Starting My LFX Mentorship Journey: Building Contributor Identity Verification for Hiero
Today, June 15th, 2026, I officially start my 6-month LFX mentorship under the Linux Foundation Decentralized Trust (LFDT) program. I will be working …
General Token Economics: The Core System Behind a Sustainable Web3 Project
Token economics is not only about token price. It is about designing the rules, incentives, and long-term logic of a Web3 ecosystem. When people start…
Three Token-2022 Mints in One Week: Fees, Yield, and Soulbound
If you come from Web2, you probably think of a token as a number in a database that moves around when people transact. On Solana, the original SPL Tok…
The Rust You Actually Need to Write Your First Anchor Program
If you have made it this far in 100 Days of Solana, you have been working in JavaScript and on the command line. You have been calling RPC methods, bu…
Uniswap V4 Hooks MEV 2026: Searcher Opportunities and Risks
Cross-posted from ai-frb.com — the canonical version lives on the FRB Research blog. This DEV.to mirror exists so the dev community can engage in comm…
Pectra & Fusaka Ethereum Upgrade MEV Impact 2026: Searcher Adaptation Guide
Answer first — Pectra and Fusaka are the two Ethereum hard fork upgrades shaping MEV in 2026. Pectra activated in 2025 with three MEV-relevant EIPs: E…
LRT Arbitrage 2026: eETH, ezETH, rsETH Searcher Playbook
Answer first — LRT (Liquid Restaking Token) arbitrage in 2026 captures spreads between LRTs like weETH, ezETH, rsETH, pufETH and their underlying ETH/…
How to Detect MEV in Your Trades 2026: A Practical Guide
Answer first — To detect MEV against your own trades in 2026, follow a four-step forensic process: (1) pull the transaction receipt and identify the b…
Three Token-2022 Mints in One Week: Fees, Yield, and Soul-Bound
If you have built middleware in Web2, you already understand Token-2022 extensions. The old SPL token program is like a plain Express router. Token-20…
How my AI agent cashes out its USDC earnings to a bank account
My agent earns USDC. It sells API calls priced with x402 , so tiny payments accumulate in its wallet. Which eventually raises the unglamorous question…
Migrating Off Blocknative's Gas API Before June 19: A Code-Level Guide
Blocknative's Gas API and Gas Network shut down on June 19, 2026 . If you have api.blocknative.com/gasprices/blockprices anywhere in your codebase, th…
Solana Transactions Aren't API Calls .. So what are they?
As a backend developer, I came into Solana thinking transactions were basically API requests. You send some data, the network processes it, and you ge…
ShadowFeed Weekly #1: IronWorm npm Attack, $36M Humanity Protocol Hack, Microsoft Repos Compromised
ShadowFeed Weekly #1 | Web3 Security Intelligence June 5 — June 11, 2026 ShadowFeed is a real-time Web3 security intelligence service for developers a…
What I shipped in one Claude Code session: a real-time mempool rug-detector pipeline
I run RektRadar , a real-time scam-token detector for Ethereum. This is an honest build-log of one session with Claude Code (the Fable model) where I …
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. …
Access Control Bugs: The #1 Cause of Smart Contract Hacks This Year
Every year the post-mortems pile up, and every year the same category sits at the top of the loss chart. Not reentrancy. Not oracle manipulation. Acce…
Auditing a Contract With No Source Code: Reading EVM Bytecode
You found a contract holding $4M. Etherscan shows the balance, the transactions, the token transfers. What it does not show is a single line of source…
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 sequen…
The Auditor's AI Workflow: How I Use LLMs Without Trusting Them
I use an LLM on every contract I review. I also assume it is lying to me until I prove otherwise. That sounds contradictory, but it is the only way to…
I Built a Polymarket Trading Bot That Tries to Capture the Last 60 Seconds of Market Inefficiency
Over the last few days, I've been building and testing a Polymarket trading bot focused on BTC and ETH 15-minute markets. The idea is surprisingly sim…
Creating a MiniDex
┌──────────────────────┐ │ MiniDEXFactory │ └──────────┬───────────┘ │ createPair(tokenA, tokenB) via Yul CREATE2 │ ▼ ┌──────────────────────┐ │ MiniD…
I built a pay-per-record data marketplace for AI agents on x402 - On the CDP Bazaar
The problem: agents need citable facts; public data is scattered across 100s of APIs. What OSF does: collect → provenance-stamp → serve over MCP + x40…
I Added x402 Payments to Base's Agent Skills — Here's How
If you build agents on Base, two things landed recently that are worth connecting. First: Base shipped its own Agent Skills. There's now a base/skills…