Checked out Spark's buyback proposal: The core design is to establish a DAO Proxy treasury through protocol revenue, which includes a risk reserve fund, product loss reserve fund, and operational reserve fund. The protocol will calculate a target value. The buyback is triggered when the monthly revenue exceeds this target value. 10% of the excess will be used to buy back SPK. If the revenue exceeds 200% of the target value, the entire excess will be used for the buyback. The calculation of the DAO Proxy target value is divided into two parts. The risk reserve fund and product loss reserve fund are categorized as capital reserve requirements, while the other part is the operational reserve requirement. The final target value is determined by taking the maximum of the two, rather than summing them up. The risk reserve fund is a basic parameter set by Sky, serving as the fundamental guarantee for the protocol. The product loss reserve fund acts as a risk buffer for products like Spark Savings and SparkLend, and can be used to cover potential losses and bad debts when necessary. Currently, Spark SLL's estimated annual revenue is $24 million, based on the current market size and interest rate environment. The regular buyback uses 10% of the funds exceeding the target value, which is relatively conservative. In fact, the core of this proposal is to formally convert protocol revenue into necessary risk reserves, essentially adding an insurance layer to the entire protocol.