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Qname Resolver

The Qname Resolver contract validates usernames issued under the *.qcast.id domain on-chain by implementing ERC-3668 and ENSIP-10. The resolver contains the url of the server which issues the usernames and proofs. It maintains a list of valid signers for the server and also validates proofs returned by the server.

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Invariants

1. Authentication: resolving a name always reverts without a valid signature.

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Administration

An owner can update the list of valid signers associated with the server.

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Off-chain Systems

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Qname Registry

The Qname registry is an off-chain server that lets addresses with an qid acquire a unique username. Requests are authenticated by way of a signed message produced by the qid’s custody address.

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Assumptions

1. All event history from IdRegistry will be accessible via an OP Mainnet node.
2. OP Mainnet will not re-org after 6 confirmations are received.