Provide an Example of a Cryptocurrency That Utilizes a BFT-variant Consensus.
One prominent example is Ripple (XRP Ledger), which uses the Ripple Protocol Consensus Algorithm (RPCA), a form of BFT. Another is Cosmos, which utilizes the Tendermint BFT consensus engine.
These systems are chosen for their high transaction throughput and fast finality, making them suitable for cross-border payments and other high-speed financial applications. Ethereum 2.0's Beacon Chain also incorporates a BFT-like mechanism called Casper FFG for finality.