Protocols, wallets, contracts, and indexing from shipped systems—grouped here with project evidence. Web3 engineering goes deeper on the work.
Web3 technologies
Antelope- 7 projects
High-throughput chain protocol behind exchange backends, GraphQL indexers, multichain auctions, and music marketplaces.
Ethereum- 5 projects
EVM contracts and deployments behind token products, NFT marketplaces, options protocols, and cross-chain auction systems.
NFT- 4 projects
On-chain collectibles in Polygon marketplaces, virtual-world commerce, and hackathon minting flows.
Ethers.js- 3 projects
Ethereum library behind ZTX's WebGL wallet connector, RareMint's Polygon marketplace, and Knowledge.io's ERC-20 ICO, before the move to Viem and Wagmi.
Solidity- 3 projects
Smart contract language for EVM auction systems, options protocols, and token deployments tested with Foundry.
Alchemy- 2 projects
Managed Ethereum RPC, webhooks, and developer APIs for reliable chain reads, writes, and indexing workloads.
Blockchain- 2 projects
On-chain products and indexer systems across EVM chains and Antelope, from token launches to exchange backends and open-source tooling.
Viem- 2 projects
TypeScript client for EVM contract reads, event subscriptions, and wallet interactions in trading and auction systems.
Wagmi- 2 projects
React hooks on Viem for wallet connection, contract calls, and token balance subscriptions in Opyn's trading app and Bitlauncher's auctions.
Foundry- 1 project
Solidity toolkit for testing and deploying Opyn Markets protocol contracts to Arbitrum testnet with forge tests and deployment scripts.
Hardhat- 1 project
Solidity compile and test environment for Bitlauncher auction contracts before EOS EVM deployment.
Ponder- 1 project
On-chain event indexer that persists options chain data to PostgreSQL for Opyn's Next.js trading interface.
Writing about Web3
Tokenization
January 20, 2026
Exchanges like the NYSE are launching tokenized venues that run 24/7, settle instantly, and fund with stablecoins, next to the markets they already operate.
Why I'm Bullish on 2026
November 15, 2025
AI agents, stablecoins, tokenized venues, wallet signing, and DeFi primitives each reached production in 2025, and 2026 is when I expect them to meet in the same products.
Intersection of AI and Web3 (Part 2)
November 13, 2025
Agentic finance, stablecoin rails, and decentralized AI infrastructure after a year of building at the intersection.
Intent-Based Multichain DeFi
October 15, 2025
Solver networks, ERC-7683, and production intent protocols across EVM, Solana, and Cosmos.
Stablecoin Summer
October 15, 2025
The GENIUS Act and growing Treasury-backed reserves are turning stablecoins from a trading bridge into payment and settlement rails that products can build on.
Agentic Finance
September 30, 2025
AP2, x402, and OpenAI's agentic commerce work let AI agents hold mandates and settle in stablecoins, which moves them from giving financial advice to executing it.
Web3 Composability
September 8, 2025
The token, launch, liquidity, governance, and DeFi standards a new Web3 project can build on, and the systemic risk that comes with sharing them.
EVM Token Standards Overview
May 15, 2025
What ERC-20, ERC-1155, ERC-6909, and ERC-7281 each define, where each one fits, and how they compare on batching, approvals, and gas.
Managing Risks in DeFi
May 14, 2025
The technical, economic, systemic, and operational risks in DeFi, the incidents that exposed each one, and the checks and tools I use before trusting a protocol.
AMMs, Liquidity Pools & Yield Farming
May 12, 2025
How automated market makers price trades from liquidity pools, what liquidity providers earn and risk, and yield farming strategies on Ethereum, Solana, Cosmos, and zkSync.
Trading Engines - Order Books & AMMs
May 10, 2025
How order books and AMMs match trades, which projects run each model and hybrids of both, and when I would pick one over the other.
The Skillset of a Product Engineer
March 25, 2025
What I look for in a product engineer—ownership across product, interface, and systems, not a title swap for frontend or backend.
How USDT0 Improves Stablecoin Bridging
March 20, 2025
How USDT0 and LayerZero's OFT standard move USDT across chains without wrapping, with unified liquidity and a smaller bridge attack surface.
EVM on Bitcoin - The Future of DeFi
March 17, 2025
The Layer 2s, sidechains, and token standards bringing programmability to Bitcoin, and what EVM compatibility through projects like SovaEVM adds for Solidity developers.
The Power of Bitcoin Runes
March 2, 2025
How Bitcoin Runes tracks tokens in Bitcoin's UTXO model instead of inscriptions, and the applications being built on it a year after launch.
Engineering Principles
February 25, 2025
Principles I use across web and blockchain work—quality, reliability, and shipping speed in the same conversation, independent of stack.
Math in JavaScript and DeFi
January 19, 2025
Floating-point quirks, precision, and BigInt choices I use when JavaScript math has to hold up in DeFi contracts and onchain apps.
Modern Next.js Web3 Architecture
October 1, 2024
URL state, collocation, React Query, wagmi, and viem in Next.js Web3 apps.
Introducing BasilicEVM
August 15, 2024
BasilicEVM is the EVM starter I use for wallets, types, and chain integration, built on Foundry, viem, wagmi, and shared TypeScript.
Comparing Ethers.js and Viem/Wagmi
July 20, 2024
How Ethers.js and Viem with Wagmi differ on bundle size, modularity, types, and React integration, and where each one runs at Bitlauncher.
The Intersection of AI and Web3
July 7, 2024
A July 2024 snapshot of shared infrastructure between AI and Web3: compute, identity, data, and open networks.
TicoBlockchain 2019 Recap
February 15, 2019
Recap of the First International Blockchain and Cryptocurrency Conference in Costa Rica.
First Crypto Conference in Costa Rica
January 1, 2019
On February 2nd, the first international blockchain and cryptocurrency conference in Costa Rica will be held in San José.
Costa Rica's Crypto Cantina
July 20, 2018
BlockchainCR is excited to introduce "Costa Rica's Crypto Cantina."
Blockchain Technology in Costa Rica
June 3, 2018
The Blockchain ecosystem in Costa Rica, BlockchainCR, and the Costa Rican Blockchain Association.