Taiko

Taiko, an Ethereum-equivalent ZK-Rollup, launched its mainnet on May 27, 2024, with Vitalik Buterin proposing the genesis block. In Q1 2025, the Pacaya upgrade introduced based pre-confirmations, achieving ~2-second finality on testnet, and partnered with Nethermind, Gattaca, and Chainbound to develop prover-proposer separation (PPS). On May 1, 2025, Taiko DAO launched via Aragon's optimistic governance framework, featuring a Security Council with external representatives and a board including a Harvard Business School professor and Binance's former global regulatory head. By June 2025, 100% of Taiko-proposed blocks were ZK-proved, with network-wide coverage exceeding 30%. In late June 2025, Taiko suffered two security incidents: an ABI issue caused a 30-minute mainnet outage, and a chain state verification compromise led to a temporary suspension of block production. The team identified the attack cause and cooperated with CEXs and security firms to recover stolen assets. These events underscore Taiko's commitment to decentralization, ZK innovation, and robust governance, while highlighting the challenges of maintaining security in early-stage rollups.