Wiki

A wiki is a type of collaborative website that allows users to easily create, edit, and link content through their web browser, often without needing special software or logins. The most famous example is the online encyclopedia Wikipedia.

Key Characteristics of a wiki

• Collaborative: Wikis are designed for groups of people to share ideas and information quickly. Content creation is a collective effort, without a defined owner for specific pages.
• Easy Editing: Content is typically edited using a simplified markup language or a rich-text editor that functions like a word processor.
• Interlinked Pages: The structure relies heavily on links between pages, allowing information to be organized according to the users' needs.
• History Tracking: Wiki software keeps a history of all revisions, making it easy to monitor changes, spot errors, and reverse unwanted edits.

Wikis can be centralized or decentralized

Decentralized wikis are wiki systems that distribute content across many computers (nodes) instead of a single server, using technologies like IPFS or blockchain, offering censorship resistance, high availability, and new collaboration models like token rewards for contributors (e.g., Lunyr, WikiChain). They aim to be more inclusive and robust than traditional wikis (like Wikipedia), allowing for offline access and preventing single points of failure, with concepts like P2Pedia showing how to manage trust and multiple versions of pages in a distributed environment.

Key Concepts & Technologies for a Decentralized wiki

• Peer-to-Peer (P2P) Networks: Pages are stored and shared directly between users' devices.
• Blockchain: Used for immutable record-keeping, smart contracts, and incentivizing contributions (e.g., tokens).
• IPFS (InterPlanetary File System): Content-addressable storage for decentralized file sharing, used to host Wikipedia extracts or other data.
• Federated Wikis: Systems where autonomous participants maintain their own wiki sites, which can interact.

Advantages of a Decentralized wiki

• Censorship Resistance: No single entity can easily remove content.
• High Availability: Data remains accessible even if some nodes go offline.
• Offline Access: Users can work on content without constant internet connection.
• New Incentives: Blockchain can reward users for contributions and peer-review.

Examples & Projects of Decentralized wikis

• Lunyr: An Ethereum-based wiki rewarding users for contributions, aiming for a reliable knowledge base API.
• WikiChain: A blockchain/IPFS framework for decentralized wikis with smart contracts for governance.
• P2Pedia: A peer-to-peer wiki that helps users navigate different versions of pages using trust indicators.
• Decentralized Wikipedia (e.g., using IPFS): Projects that store Wikipedia content on decentralized networks for persistent, censorship-resistant access.

How Decentralized wikis Work (General Model)

• Content Storage: Pages are chunked and stored across a network (like IPFS) or on blockchains, not one server.
• Data Retrieval: When you search, the system finds the content's hash and retrieves it from the distributed network.
• Collaboration: Edits are managed through agreed-upon rules (e.g., smart contracts) or by users choosing which versions to trust locally.