Project idea: Composite Attestations Engine (CATTS)

[kristofer]

Bringing a topic from another thread in here.

@skilesare

CATTS looks awesome! I was just listening to some GreenPill podcasts about it and envisioning this a very similar same service on the IC. What a joy to find it already underway!

I scanned the docs…one thing I was thinking about is that with these services that have API endpoints…does that break some kind of trust at any point? I wonder if it would be better to validate against a couple of rpc gateways the actual storage or function call data using EVM RPC Canister - #30 by domwoe to get better trust that it is on chain(or better yet if we had an onchain copy of ETH history we could query like the BTC UTXOs. I guess it would probably get too big for some of the L2s.

(This doesn’t have to do with wasi so maybe we should move to a different thread, but this is a great use case to make to the community that we need further development of these services. The IC is a perfect L2 relayer if we can get reliable data!)

@skilesare What you heard on the GreenPill podcast I would guess was about EAS - the ETH attestation service CATTS would use?

And yes, we do place some trust that the data from the EAS api is correct. Which is not ideal but definitely ok to begin with. Ideally, CATTS would create a full index of the attestation data on ICP by fetching / subscribing to ETH events instead of fetching from the EAS API.