The ABM Protocol, which powers Multi Collateral dotBTC , is a smart-contract system that backs and stabilizes the value of dotBTC through a dynamic combination of Vaults, autonomous system of smart contracts, and appropriately incentivized external actors. The dotBTC Target Price is 1 US Dollar, translating to a 1:1 US Dollar soft peg. Shutdown is a process that can be used as a last resort to directly enforce the Target Price to holders of dotBTC and Vaults, and protect the ABM Protocol against attacks on its infrastructure.