Spool.so is a non-custodial PLSA protocol on Solana What is PLSA? PLSA (Prize Linked Savings Account) – a prize linked savings account works as a lottery. A user deposits a certain amount of crypto into the protocol during the draw period. After the draw period ends, the protocol chooses a random user that receives the winnings earned by funds being used by lending protocols (such as Solend, etc.). Meanwhile, users’ funds are safe in the protocol and can be withdrawn at any time.