I cannot Create a Transaction with Optimism USDC Contract

[Andriy-Kulak]

I am trying to interact with Optimism USDC Contract. Specifically I want to execute a common approve method on ERC20 Contract but ABI is not showing up for it. This is one of the most common contracts on Optimism and how come I cannot interact with it using multisig? Can someone please assist?

Contract reference: https://optimistic.etherscan.io/token/0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85#writeProxyContract#F1

Below, you will see that ABI is not populated & no instructions are provided

The expected behavior is that I should be able to create transactions for common contracts even if they are proxies

[katspaugh]

Looks like neither sourcify, nor our own indexer have an ABI for this contract (or rather the singleton it proxies):

• https://sourcify.dev/server/files/10/0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85
• https://safe-client.safe.global/v1/chains/10/contracts/0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85

I'll relay this to our backend team. Thanks for the report!

Edit: Following up on this: we rely on Sourcify for ABIs, and it's not indexed on there. We'll need to reach out to them to add the implementation contract.