I am trying to verify contracts using UUPS proxies on Moonbeam / Moonbase Alpha. In multiple forum posts I've seen that OZ is responsible for verifying the initially the proxies deployed so I'd like to ask to do the verification on Moonbeam network.
I was finally able to verify the @openzeppelin/hardhat-upgrades uups proxy on Moonbase Alpha.
I had to flatten the source ERC1967Proxy.sol from @openzeppelin/contracts/proxy/ERC1967/ERC1967Proxy.sol and encode the constructor arguments used with upgrades.deployProxy() using this: https://abi.hashex.org/