Vaults

GUSD Feeder Pool Iron Bank (CREAM) Integration for mUSDVaults are used to earn rewards. Tokens such as imUSD or Feeder Pool tokens can be deposited to earn additional MTA rewards. On Ethereum mainnet two versions of these contracts are deployed. BoostedSavingsVault is used for single token rewards (MTA) and BoostedDualVault is used for 2 reward tokens. However, only one reward token can be used for the BoostedDualVault as well. The Boosted in the name implies that this contract reacts to the staked MTA balance and receives a boost from that.

Contracts are upgradable.

The following table lays out the currently deployed vaults and what contract is used.

Ethereum Mainnet

Vault	Contract
imUSD Vault	BoostedSavingsVault
imBTC Vault	BoostedSavingsVault
mUSD/GUSD Feeder Pool Vault	BoostedSavingsVault
mUSD/BUSD Feeder Pool Vault	BoostedSavingsVault
mUSD/alUSD Feeder Pool Vault	BoostedDualVault
mUSD/RAI Feeder Pool Vault	BoostedDualVault
mUSD/FEI Feeder Pool Vault	BoostedDualVault
mBTC/HBTC Feeder Pool Vault	BoostedSavingsVault
mBTC/TBTC Feeder Pool Vault	BoostedSavingsVault
mBTC/tBTCv2 Feeder Pool Vault	BoostedDualVault

Ropsten Testnet

Contract	Address
imUSD Vault	0xDEFc008BAC1e38F13F081DDD20acf89985DFa7C8
imBTC Vault	0x7799BEEAf20120CC78f5cF2EB9C85e395B43bF4D