What is Walrus (WAL)?
Storing large files on a decentralized network has traditionally been expensive and technically demanding. Walrus (WAL) is a storage protocol built to change that. Developed by Mysten Labs, the team behind the Sui blockchain, it splits big files across a network of nodes and keeps them verifiable through on-chain records.
How does Walrus break down and store files?
Walrus relies on a two-dimensional erasure coding scheme called RedStuff. Every file uploaded to the network is split into small shards, which are then distributed across multiple storage nodes. Even if two-thirds of those shards become unavailable, the original file can still be fully reconstructed. Because the network does not need to keep many full copies, storage costs stay low.
The Sui blockchain acts as the coordination layer. Each file gets a unique on-chain object that tracks where its shards live, who can access them, and how long they should be stored. Move smart contracts let developers program rules directly into these objects—such as automatic deletion after a set period.
What role does the WAL token play?
WAL is the economic backbone of the Walrus network. Users pay in WAL to store their files, and payments go to node operators at the end of each storage cycle. Operators must also stake WAL to join the network, which discourages bad behavior—if a node fails its duties, part of its stake can be slashed.
Token holders who do not run their own node can delegate WAL to existing operators and earn a share of the rewards. Staked WAL also gives voting power in protocol decisions, including storage pricing and network parameters.
What can Walrus be used for?
Walrus targets use cases where large files need verifiable, long-term storage. AI training datasets, NFT media, blockchain archives, and decentralized application assets are among the early areas of adoption. An AI developer can prove their dataset was not tampered with, or an NFT project can store artwork without relying on a single server.
The programmable nature of stored objects opens further possibilities. Access can be restricted to specific wallet addresses, files can be set to expire on a known date, and storage capacity bought in advance can be resold or reassigned on a secondary market.
