EIP-1967 Storage Slots

EIP-1967 storage slots define a standard for where proxy-specific information, such as the implementation address and admin address, is stored. By using specific, non-colliding slots, this standard prevents the proxy's own variables from being overwritten by the implementation contract.

These slots are derived from hashes of constants, making them statistically unlikely to conflict with any user-defined variables. Implementing this standard is a best practice for all upgradeable contracts to ensure compatibility with standard tools and explorers.

Auditors confirm that protocols correctly utilize these slots to maintain proxy integrity. This standardization has significantly improved the security and interoperability of upgradeable protocols.