Returning create2 contracts when a contract is requested on a chain

[kuzdogan]

Following the create2 verification support, we might better be returning those create2 verified contracts whenever they are requested on another chain. Currently, we only return them only if the chainId 0 is included in a checkByAddess request. That's how we are showing it on the Lookup UI (example contract: 0x948524e32Dc168fD6cbbb32A67028dDc24D52557)

Some considerations might be:

• How do we return it in checkByAddress if it wasn't included in the request
• How do we return it when files are accessed over https://repo.sourcify.dev/
  • Should https://repo.sourcify.dev/contracts/full_match/11155111/0x948524e32Dc168fD6cbbb32A67028dDc24D52557/metadata.json respond https://repo.sourcify.dev/contracts/full_match/0/0x948524e32Dc168fD6cbbb32A67028dDc24D52557/metadata.json? Even if the contract is not deployed?
• How do we display on the UI repo
  • E.g. should https://repo.sourcify.dev/contracts/full_match/11155111/0x948524e32Dc168fD6cbbb32A67028dDc24D52557/ redirect to https://repo.sourcify.dev/contracts/full_match/0/0x948524e32Dc168fD6cbbb32A67028dDc24D52557/ ?
• How do we handle it in static file serving endpoint on server /repository ?
  • E.g. https://sourcify.dev/server/repository/contracts/full_match/11155111/0x948524e32Dc168fD6cbbb32A67028dDc24D52557/metadata.json Adding this issue just as a tracker without any immediate TODOs

[marcocastignoli]

I'll leave here my optionions regarding the questions above:

Some considerations might be:

• How do we return it in checkByAddress if it wasn't included in the request
  • maybe we can always check if the contract is create2 verified even if 0 is not included
• For all the other questions:
  • we must redirect the user when accessing the file through the API
  • we can redirect with the repo (h5ai) with some customization
  • we cannot redirect if accessed through IPFS
  • the solution that would solve this is adding a symlink into every chain that points to /0/0x... (what are the pros and the cons?)