Field notes on blockchain infrastructure.

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

Filter

All Guides Infrastructure DeFi Security Pricing

featured Ethereum

Ethereum Hoodi Beacon Chain API Guide (2026)

Connect to the Ethereum Hoodi Beacon Chain REST API. Covers validator lifecycle testing, liquid staking, restaking workflows, curl and JavaScript examples for the Holesky replacement testnet.

Apr 15, 2026 · 8 min read · BoltRPC Team

Ethereum Sepolia Beacon Chain API Guide (2026)

Connect to the Ethereum Sepolia Beacon Chain REST API. Covers testnet withdrawal testing, validator queries, finality checkpoints, curl and JavaScript examples.

Apr 15, 2026 8 min read

Ethereum

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

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