Merlin Chain has announced the launch of BTC Staking Vault 2, increasing the staking limit from 50 BTC to 100 BTC to satisfy high community demand. The annualized yield for BTC staking is currently up to 21%, with rewards anticipated in early October 2025. The initial vaults sold out rapidly, reflecting strong interest in this staking feature, which enhances network security through a Proof of Stake mechanism.