Create PiNexusDecentralizedStorage.sol

contracts/PiNexusDecentralizedStorage.sol

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+pragma solidity ^0.8.0;
+
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/token/ERC20/SafeERC20.sol";
+
+contract PiNexusDecentralizedStorage is SafeERC20 {
+    // Decentralized storage properties
+    address public piNexusRouter;
+    uint256 public storageType;
+    uint256 public storageVersion;
+    uint256 public storageSize;
+
+    // Decentralized storage constructor
+    constructor() public {
+        piNexusRouter = address(new PiNexusRouter());
+        storageType = 1; // Initial storage type (e.g. IPFS, Swarm, Filecoin)
+        storageVersion = 1; // Initial storage version
+        storageSize = 1000; // Initial storage size
+    }
+
+    // Decentralized storage functions
+    function getStorageType() public view returns (uint256) {
+        // Get current storage type
+        return storageType;
+    }
+
+    function updateStorageType(uint256 newStorageType) public {
+        // Update storage type
+        storageType = newStorageType;
+    }
+
+    function getStorageVersion() public view returns (uint256) {
+        // Get current storage version
+        return storageVersion;
+    }
+
+    function updateStorageVersion(uint256 newStorageVersion) public {
+        // Update storage version
+        storageVersion = newStorageVersion;
+    }
+
+    function getStorageSize() public view returns (uint256) {
+        // Get current storage size
+        return storageSize;
+    }
+
+    function updateStorageSize(uint256 newStorageSize) public {
+        // Update storage size
+        storageSize = newStorageSize;
+    }
+
+    function storeData(bytes memory data) public {
+        // Store data in decentralized storage
+        // Implement decentralized storage algorithm here
+    }
+
+    function retrieveData(bytes memory dataId) public returns (bytes memory) {
+        // Retrieve data from decentralized storage
+        // Implement decentralized storage algorithm here
+        return dataId; // Return retrieved data
+    }
+}