[COMPOUND] Initialize cUSDCv3 on Scroll

This proposal takes the governance steps recommended and necessary to initialize a Compound III USDC market on Scroll; upon execution, cUSDCv3 will be ready for use. Simulations have confirmed the market’s readiness, as much as possible, using the Comet scenario suite. Although real tests have also been run over the Goerli/Scroll Alpha bridge, this will be the first proposal to actually bridge from Ethereum mainnet to Scroll mainnet, and therefore includes risks not present in previous proposals.

Although the proposal sets the entire configuration in the Configurator, with parameters based off of the recommendations from Gauntlet.

Further detailed information can be found on the corresponding proposal pull request and forum discussion.

Proposal Actions

The first proposal action sets the Comet configuration and deploys a new Comet implementation on Scroll. This sends the encoded setConfiguration and deployAndUpgradeTo calls across the bridge to the governance receiver on Scroll. It also calls setRewardConfig on the Scroll rewards contract to establish Scroll’s bridged version of COMP as the reward token for the deployment (note that rewards speeds have been set to 0, as Gauntlet has recommended to hold off on including rewards in the comet deployment for now).

The second action approves Scroll’s L1USDCGateway to take Timelock's USDC, in order to seed the market reserves through the bridge.

The third action deposits 10K USDC from mainnet to the Scroll L1USDCGateway contract to bridge to Comet.

The fourth action updates the ENS TXT record v3-official-markets on v3-additional-grants.compound-community-licenses.eth, updating the official markets JSON to include the new Scroll cUSDCv3 market.

https://compound.finance/governance/proposals/221