Opera Mainnet (Fantom)

Opera Mainnet is the name of the main public network of the Fantom blockchain, launched in December 2019. It was compatible with the Ethereum Virtual Machine, so developers could deploy Ethereum-style contracts and users could connect common wallets, and it became a popular venue for DeFi applications during 2021. Opera reached agreement through Lachesis, an asynchronous Byzantine fault tolerant protocol in which validators build a directed acyclic graph of events and confirm transactions within seconds, with near-instant finality. Validators secured the network by staking FTM tokens. In 2024 the Fantom team introduced a successor network called Sonic, with a new token, S, and a migration path for FTM holders, so Opera is now largely a legacy chain. The name "Opera" has no link to the web browser of the same name. Also see layer-1 blockchain.