Identity contract constructor takes claims, but claim signature requires address of the identity

OriginProtocol / origin-playground

Playground for us to try out new ideas, specifically around Identity (ERC 725) & the Origin Marketplace

https://playground.originprotocol.com

MIT License

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Closed aborovac closed 6 years ago

aborovac commented 6 years ago

The way I read the code:

Identity constructor takes claims
a claim contains signature
in order for claim to valid the signature in the claim needs to be produced by signing identity address
but identity address doesn't exist, it's about be created

Am I misunderstanding something?

nick commented 6 years ago

It's possible to predict the address of a contract that hasn't been created yet... the code we use to do so is here. Also see here.

This lets us 'pre-sign' claims and add them at identity creation time with a single blockchain transaction.