On July 25th, the Core Foundation announced on Thursday that it will introduce a dual staking model for Core Chain. The model builds on Core's existing non-custodial bitcoin staking system, which was launched earlier this year. The dual staking model allows bitcoin holders to earn higher returns by staking bitcoin and CORE tokens. Since its launch in April, the non-custodial bitcoin staking system on Core Chain has attracted around 5,000 bitcoins, worth around $309 million, the foundation said.