Field notes on blockchain infrastructure.

Deep-dives, guides and release notes from the team building BoltRPC.

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featured Smart Contracts

How to Monitor Smart Contract Events in Production

Build a production-grade smart contract event monitor using ethers.js WebSocket subscriptions. Covers reconnection logic, missed event recovery, multi-contract monitoring and alerting.

Apr 8, 2026 · 7 min read · BoltRPC Team

Ethereum Sepolia Testnet RPC Guide: How to Connect and Test (2026)

Connect to Ethereum Sepolia testnet with ethers.js, viem, Web3.py, curl. Covers chain ID, endpoint setup, smart contract deployment, CI/CD pipelines, common issues.

Apr 15, 2026 7 min read

smart contracts

What is a Smart Contract? A Developer's Guide (2026)

A clear, practical guide to smart contracts for developers in 2026: how they work, how they're written, how you interact with them via RPC, and what their real limitations are.

Apr 14, 2026 11 min read

Ethereum

Ethereum Hoodi Testnet RPC Guide: How to Connect and Test (2026)

Connect to Ethereum Hoodi testnet with ethers.js, Web3.py, curl. Covers RPC methods, faucet links, smart contract testing workflow, common issues.

Apr 13, 2026 8 min read

Polygon

Polygon Amoy Testnet RPC Guide: How to Connect and Test (2026)

Complete guide to Polygon Amoy testnet RPC: endpoints, chain ID, ethers.js, Web3.py, curl, contract deployment, faucets, common issues.

Apr 13, 2026 7 min read

Ethereum

Ethereum RPC Methods: A Practical Guide for dApp Developers

The Ethereum JSON-RPC methods you will actually use. Covers eth_call, eth_getLogs, eth_getBalance, eth_sendRawTransaction and more with real code examples.

Mar 30, 2026 9 min read