GateKeeper is an identity-as-a-service infrastructure aiming to bring identity as a service to web3. In short, we aggregate various DID methods allowing for complete interoperability of Decentralized Identifiers (DID) across the spectrum. Our goal is to defragment the DID landscape via aggregation of both DID methods, data sets (both on and off-chain) and the verifiable credentials that affirm these data sets.