OnchainCID: Decentralized File Metadata & Ownership Management on Ethereum

[sujalsalekar]

OnchainCID

A robust Ethereum smart contract for managing decentralized file metadata and ownership with IPFS/Filecoin CID integration. This contract provides a secure and efficient way to track file metadata, manage ownership transfers, and handle storage deal IDs on the blockchain.

Key Features

• File Metadata Management: Store and manage essential file information including filename, size, MIME type, and encryption status
• Timestamp Tracking: Built-in creation and update timestamp tracking for all file operations
• Secure Ownership Transfer: Two-step ownership transfer process with initiation and acceptance phases
• Deal ID Management: Support for multiple storage deal IDs with batch operations
• Gas Optimized: Efficient batch operations and storage management
• Event Tracking: Comprehensive event emission for all major operations

Core Functionalities

• Push new CIDs with associated metadata
• Update and manage storage deal IDs
• Transfer file ownership between addresses
• Remove CIDs and deal IDs (single or batch)
• Query detailed file information
• Track file creation and modification timestamps