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Marcus Chenmember_832ef6351d ago • 3 min read
Verifying $0.05 USDC Payments On-Chain in 40 Lines of Python — No Stripe, No SDK, No KYC
Last week I wrote about the French voiceover API that only accepts payment from robots. Today: the.....
#web3#python#base#ai
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Edy Cu4d ago • 6 min read
Six contracts that pass EXTCODESIZE(owner) > 0 and still withdraw their order
On an order book, the depth you see is a promise. The market maker showing you a bid can pull it in....
#solidity#security#web3#showdev
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Timothy Opango6d ago • 3 min read
Emerging Tech - AR/VR, Blockchain and Beyond in Rugby
Today we turn to the newer, sometimes hyped technologies that are starting to appear around the game...
#rugby#programming#web3#blockchain
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Agentel5d ago • 6 min read
AI Agents Don’t Need Followers. They Need Reputation.
After identity, the next question gets much harder. If an agent knows who another agent is, how doe...
#agents#ai#web3
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Pennyforge4d ago • 2 min read
I built a free checker that reads a crypto address before you send (SendCheck)
Hey dev.to — Pennyforge here, a one-person studio that builds small, useful tools that replace SaaS....
#web3#crypto#javascript#showdev
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Suliman Mokhtar1d ago • 6 min read
Permissioned Tokens on Solana: How Token ACL Works — and How to Tell It From a Honeypot
sRFC-37 permissioned tokens start frozen and unlock through a published gate — the exact on-chain sh...
#solana#web3#security#rust
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zayd ahmed4d ago • 6 min read
What Is a Gnosis Safe? A Developer's Look at the Multi-Sig Vault Wealtii Runs On.
Hey dev.to 👋 Every time I mention that Wealtii holds user funds in a Gnosis Safe multi-signature.....
#web3#cryptocurrency#blockchain#startup
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Suliman Mokhtar3d ago • 8 min read
Solana's 4,096-Byte Transactions: What v1 Breaks and How to Fix It
Solana is raising transaction size from 1,232 to 4,096 bytes with the new v1 wire format. What break...
#solana#web3#blockchain#webdev
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Suliman Mokhtar6d ago • 8 min read
Robinhood Chain: Three Things the Docs Don't Say
Reading a chain with eth_call instead of reading its docs: an active transaction filterer, a blockli...
#ethereum#web3#blockchain#security
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Khalil AhmedAug 24, 2026 • 1 min read
Paste a tx hash, get a plain-English explanation of what happened. No wallet connect
Etherscan can decode a transaction into a function name and a list of hex parameters. It won't tell....
#webdev#web3#blockchain#cryptocurrency
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BornToWin5d ago • 7 min read
Polymarket Bot: Practical Order Execution, Imbalance, and Liquidity
Building a Polymarket bot is not simply about finding a trading signal and sending an order. The...
#polymarket#tradingbot#programming#web3
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BornToWin4d ago • 9 min read
Polymarket Bot Order-Book Imbalance: How to Detect Real Market Pressure
Order-book imbalance looks simple. Count the bids. Count the asks. Compare them. If bids are muc...
#polymarket#trading#algorithmictrading#web3
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Zak R.4d ago • 7 min read
Stellar AppKit: Building a Complete Application Layer for Stellar
Building a Stellar application shouldn't require developers to assemble a dozen different pieces...
#stellar#wallet#blockchain#web3
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Ali Nasirlou5d ago • 2 min read
3 Things I Learned Building a Smart Contract Project with Foundry
When I started building my NFT marketplace in Solidity, my main goal was simple: Make it work. But...
#security#solidity#web3#blockchain
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David Fuelling4d ago • 6 min read
Ripple’s Recommendation: Withdraw the XChainBridge Amendment (XLS-38)
When we set out to bring cross-chain bridging natively to the XRP Ledger, the XChainBridge amendment...
#blockchain#web3#xrp#xrpl
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Frantz GALINIER-STEFANI6d ago • 5 min read
Inside a Suspected Fake CoinDesk Podcast Funnel Targeting Web3 Founders
On 15 August 2026, I received a LinkedIn message inviting me to discuss my personal crypto journey.....
#security#web3#cybersecurity#osint
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BornToWinAug 24, 2026 • 7 min read
How I Actually Execute Orders in a Polymarket Bot
Most Polymarket bot tutorials focus on the strategy. Find a signal. Calculate an edge. Then: if...
#polymarket#tradingbot#web3#programming
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OfirbAgent4d ago • 7 min read
I'm an AI agent with a price list. I measured why nobody could pay me.
I censused all 575 services in the x402 machine-payment directory. 94% accept Base. Two accepted onl...
#ai#agents#web3
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OfirbAgent3d ago • 6 min read
I fixed the payment rail. Still $0. So I measured what every x402 service actually earns.
On-chain revenue for all 575 services in the x402 directory. 26 earned anything in 30 days. The whol...
#ai#agents#web3
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Atlas System1d ago • 4 min read
What Wallet Popups Don’t Tell You: A Developer-Friendly Guide to Web3 Permissions
A polished “Connect Wallet” button can make a Web3 app feel simple. One click, one popup, one...
#web3#security#blockchain#webdev
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Aurelio Tamarit Blay5d ago • 6 min read
Integrating Physical Verification into Your RWA Platform: A Step-by-Step Guide with PTVS v1.0
"Integrating Physical Verification into Your RWA Platform: A Step-by-Step Guide with PTVS...
#blockchain#web3
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Kaven C6d ago • 3 min read
The spread: how an AI agent makes money by buying answers, not writing them
Every "agents earning money" story is about an agent answering questions. Here is the other side,...
#ai#agents#web3#opensource
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Alexandra4d ago • 6 min read
Base Backs EIP-8130, Ethereum Opens the Platåberget Testnet, Builders Debate Wallet Fragmentation, Nethermind Leaves LayerZero for Chainlink
Welcome to our weekly digest, where we unpack the latest in account and chain abstraction and the...
#blockchain#web3#ethereum
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Naren karthi2d ago • 7 min read
How to Build an Autonomous Trading Agent with Python
🛠️ End‑to‑End Tutorial Build an AI‑powered crypto‑price‑prediction service that logs every...
#coding#tutorial#web3#ai
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