A flexible toolkit for building real-time blockchains

Hubble optimistic rollup

Michelson VM and Tezos OS rewritten in Rust

🎛 Core smart contracts of Uniswap V2, adapted to run on the Optimistic VM (OVM) while maintaining compatibility with the Ethereum VM (EVM).

Making L2 chain, Optimistic/zkRollup (fraud proofs/L1-L2 data transfer/challenging/ etc)

Optimistic Rollup Example: ERC721

Conway's game of life on Optimistic Ethereum

Godwoken Public Network Information

Optimistic Rollup Example: ERC20

A Complete Guide - Run Node Ink L2 Blockchain Built on OP Superchain by Kraken

A programmable account layer upon Nervos CKB.

A Hybrid ZK-Optimistic Network Extension with Flexible Verification for Solana

Blockchain kits and framework for building blockchain integrated infrastructure services (with EVM-compatible network), written in go.

Real-time cryptographic watchtower and reputation engine for Unichain. Validates Intel TDX attestations, detects sequencer equivocations, and provides a programmatic 'confidence score' API for 200ms Flashblocks.

Optimistic rollups for AI agent actions — propose, challenge window, finalize or revert

An optimistic rollup with fraud proofs and a bisection dispute game — a sparse Merkle state, one shared state transition function, and an L1 that convicts a lying sequencer by re-running a single transaction. Includes an interactive dispute visualization.

A Clarity smart contract implementing a Bitcoin-anchored optimistic rollup system for enhanced transaction efficiency and scalability on the Stacks blockchain. It ensures secure off-chain transaction management while maintaining on-chain security.

Guía completa para comprar Optimism (OP)

A React demo project showcasing Optimistic UI updates and skeleton loading states for a social media post component. It simulates real-world API latency and failures to demonstrate instant UI feedback, rollback on errors, and smooth user experience patterns used in modern web apps.

Guía completa para comprar Arbitrum (ARB)