Fantom is a high-performance, scalable, EVM-compatible, and secure smart-contract platform. It's mainnet deployment, Opera is built on Fantom’s consensus mechanism, Lachesis.
Applications built on Fantom are fast, secure, and highly scalable!
3/ Lachesis is asynchronous, leaderless, Byzantine Fault-Tolerant, and final.
This means transactions cannot be reversed once included in a block.
As a comparison, $BTC has a finality of thirty to sixty minutes, while $ETH finality is around one minute.