In an era where internet data is monopolized by a few tech giants, we've long been accustomed to relying on centralized cloud services. But there's a problem that's hard to avoid: the photos, videos, creative works, business data—甚至整个项目的源代码备份—are all facing the same threat. Once an account is frozen, policies are suddenly changed, or system failures occur, data can disappear instantly.

Walrus is designed to address this pain point. It’s not a cheap, low-cost backup solution, but a truly decentralized, censorship-resistant Blob storage protocol that guarantees permanence through mathematical assurance—built on the Sui blockchain.

What is the core innovation? Red Stuff 2D Erasure Coding.

Walrus does not adopt the old-fashioned "multiple complete backups" approach (which is inefficient), but instead uses cutting-edge 2D erasure coding technology. The process is as follows: your original data (such as a 4K video, AI training set, NFT metadata package) is sliced into countless small fragments, then transformed through two layers of mathematical operations, dispersing them across hundreds of independent storage nodes worldwide.

What are the benefits of this approach?

First, incredible fault tolerance. Even if more than two-thirds of the nodes experience issues (downtime, attacks, deletion), the remaining fragments are still sufficient to fully restore the original file. Second, complete resistance to censorship. No single entity—whether government, enterprise, or node operator—can delete or tamper with your data alone. The data’s existence itself is distributed, redundant, and uncontrollable. Third, cost efficiency. Compared to traditional multi-replica storage, erasure coding achieves the same or even better fault tolerance with less storage space.