The launch of gold ETFs has driven gold prices, and Bitcoin spot ETFs are worth looking forward to.

"Reentrancy" is the foundation for implementing flash loans; however, once the target contract has vulnerabilities, attackers can carry out reentrancy attacks.

The resources in the Move language have four properties: copyable, indexable, droppable, and storable. Through different combinations of these four properties, users can easily define any type of resource. The assets in Solidity are the numerical balances granted to user accounts by token contracts, whereas Move undoubtedly enhances the security of assets.