Gas

Bilibili Tech

Aug 9, 2022 · Blockchain

Smart Contracts, EVM Design, and Consensus Mechanisms in Blockchain

The article explains Web3’s trust‑less model and smart‑contract fundamentals—from Bitcoin’s simple script to Ethereum’s gas‑metered EVM—examines design trade‑offs such as on‑chain versus signature‑based whitelists, outlines engineering practices for immutable bytecode upgrades, and describes consensus evolution from PoW to a hybrid PoS/PoA PBFT “High‑Energy Chain.”