rate on the VBNB market
Summary
If passed, this VIP will perform the following actions:
- Update the implementation of the VBNBAdmin contract
- Grant Normal, Fast-track and Critical timelocks to execute the function setInterestRateModel on the VBNBAdmin contract
Description
VBNBAdmin is the admin of the VBNB market. The VBNBAdmin contract was added in the VIP-189, to facilitate the Automatic Income Allocation feature in the VBNB market (that is not upgradable).
With the change included in this VIP, a new function to the VBNBAdmin contract is added: setInterestRateModel. This new function:
1. checks the required permission in the AccessControlManager contract
2. invokes the privilege function in the VBNB contract
By integrating the ACM, it will be possible to grant the different timelock contracts for the execution of the new function, and therefore it will be able to change the Interest Rate contract of the VBNB market with Normal, Fast-track and Critical VIP's (nowadays, only the Normal timelock can do this, because the ACM is not integrated, and it is required to be the admin of the VBNB market to perform this update).
Security and additional considerations
We applied the following security procedures for this upgrade:
- Configuration post VIP: in a simulation environment, validating the new implementation
- Deployment on testnet: the same upgrade and configuration have been performed on BNB testnet
- Audit: Certik has audited the updated code
Additional details in VIP description.
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