Solana Validator Stake Checker CLI — Track Decentralization from Your Terminal
Ever wondered how decentralized Solana really is? With over 1,500 validators securing the network, it's hard to see the big picture from the command l…
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Check Wallet Balances Across 4 Chains with Zero Dependencies — chain_balance.py
TL;DR: A single-file Python CLI tool that checks native and token balances across Solana, Ethereum, BSC, and Polygon using public RPC endpoints. No pi…
Crypto Branding After the Token Launch
Most crypto brands are designed for the launch. The logo. The teaser video. The landing page. The mint page. The token claim. The Twitter banner. The …
Web3 Onboarding Is Not a Wallet Problem. It Is a Trust Problem.
Most Web3 onboarding advice starts in the same place: Make wallet connection easier. That is useful, but incomplete. Wallet connection is only the fir…
I Built a Pay-Per-Call Crypto Signal API with x402 — Heres the Architecture
I Built a Pay-Per-Call Crypto Signal API with x402 — Here's the Architecture TL;DR: I shipped a live crypto signal API where every call costs $0.01 in…
What I learned scraping 141 crypto cardholder agreements
On 3 February 2026, three unrelated crypto cards — CEX.IO Card, Trustee Plus, and IN1 — stopped processing payments on the same day. They had no paren…
Keccak256 From Scratch in 200 Lines of Kotlin (Because Web3j Was 8 MB)
Web3j is 8 MB. My APK is 4.5 MB. So I wrote the Ethereum hash function from scratch. Why Not Just Import Web3j? I was building a native Ethereum walle…
Introducing Solana Support, Smarter Ask AI, Mobile Attribution, and Dashboard Improvements
gm, builders! 👋 Here’s your roundup of April 2026's onchain news and growth insights. Highlights Historical Wallet Data, Solana Support, and Mobile Li…
The Definitive Guide to Web3 Wallet Segmentation and Analytics
Key Takeaways Wallet segmentation groups addresses by type and behavior: hot wallets for real-time engagement signals, cold wallets for high-value hol…
15+ Web3 Metrics That Drive Real Growth
Key Takeaways Activated wallets measure genuine product value more accurately than wallet connections since a connection only indicates interest while…
Paste a wallet, get a personal airdrop verdict — and call the same logic from any LLM
Paste a wallet, get a personal airdrop verdict — and call the same logic from any LLM Two surfaces, one rule registry: a browser tool and an MCP tool …
We Built Three Bitcoin Primitives This Week That Don't Exist Anywhere Else
The Problem With "Bitcoin-native" Claims Most things calling themselves Bitcoin-native are not. They settle on Ethereum, they custody coins through a …
The State of MCP Monetization in 2026: Where Builders Actually Get Paid
I've spent the last few weeks building coinopai-mcp — a paid crypto intelligence MCP server — and one question kept coming up: where do you actually l…
Building an Interactive Merkle Tree Visualizer — One Byte Changes, the Whole Root Changes, in O(log n) Hops
"If a Merkle tree commits to a million transactions and one of them is altered, the root changes. To prove inclusion of any one transaction, you only …
As crypto cools, a16zcrypto raises a $2.2B fund
As some of the biggest VCs in crypto start to consider funding AI startups, a16zcrypto's new fund will stay the course.
Best Product Analytics Tools for DeFi Teams
Key Takeaways DeFi product analytics requires onchain and offchain data integration because the blockchain records smart contract interactions that tr…