If optimism were to go down, would Farcaster also go down?

I understand OP chain is used to associate FIDs with Ethereum addresses - I assume this would fail if OP had a liveness issue?

Farcaster

Farcaster is pausing all contracts shortly. 

- No new accounts will be able to sign up
- Existing accounts will not be able to recover, add keys or purchase storage
- Everything else is unaffected

We'll be back up as soon as OP mainnet is stable

here is the it actually happened and what is affected thread

here is the it actually happened and what is affected thread https://warpcast.com/v/0x1cd4b311