BTCFI is a unique program by Starknet designed to make Bitcoin a more active participant in decentralized finance (DeFi). For this purpose, a special mechanism — BTC staking — was launched. Its essence is that holders of the largest cryptocurrency can stake their coins to secure the Starknet network. As a reward for staking, BTC holders will receive STRK tokens. The total expected reward is set at 100 million coins.