dexorder

lib_openzeppelin_contracts/contracts/interfaces/draft-IERC1822.sol

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: MIT
+// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC1822.sol)
+
+pragma solidity ^0.8.20;
+
+/**
+ * @dev ERC-1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
+ * proxy whose upgrades are fully controlled by the current implementation.
+ */
+interface IERC1822Proxiable {
+    /**
+     * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
+     * address.
+     *
+     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
+     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
+     * function revert if invoked through a proxy.
+     */
+    function proxiableUUID() external view returns (bytes32);
+}