ERC20Snapshot and flash loans/swaps/mints

[abcoathup]

Hi @chrismaree,

Have a look at @frangio's suggestion for checking that an address is an EOA, also that isContract shouldn't be used to check that an address is not a contract:

How to write an onlyNonContract modifier (function can't be called by a contract)

Indeed, isContract can only be used to assert that an address is a contract, and should never be used to assert that an address is not a contract. There is relevant discussion in Bypassing Smart Contract Timelocks. An alternative method proposed there is to require a signature from the address in order to verify that it is an EOA, and thus conclude it isn’t a contract.