I was asked: How can a group of mutually distrustful nodes agree on the same ledger?
My answer: Tendermint (now called CometBFT) is a Byzantine fault-tolerant consensus engine used by chains such as Cosmos Hub. The โ€œtwo-thirdsโ€ threshold ensures that any two votes that pass share at least some honest nodes, so they canโ€™t confirm two conflicting outcomes at the same time.
$ATOM 1.732 (+0.35%)
If anything wasnโ€™t clear, ask me in the comments.

Volatility is high, so size your position according to what you can afford.