Decentralized finance (DeFi) lending is rapidly expanding its presence over centralized finance (CeFi), with over $2 trillion in largely unused Bitcoin holdings being leveraged for bitcoin-backed loans to access liquidity. Zest Protocol is positioning itself as a key platform for bitcoin lending and borrowing. On the Aptos blockchain, the integration of OKX's wrapped bitcoin token, xBTC, has accelerated the growth of Bitcoin DeFi (BTCfi). OKX deployed xBTC on its trading exchange within the Aptos network, providing a new channel for liquidity flow given Bitcoin's status as the largest cryptocurrency by market capitalization. Echo Protocol has emerged as a major contributor to this ecosystem, supporting $370 million in Bitcoin on Aptos and leading initiatives such as liquid restaking. Additionally, the BTCfi hub on the Sui network has expanded with new partners, further advancing Bitcoin's capabilities within DeFi. These developments highlight a growing momentum for BTCfi across multiple blockchain ecosystems.