What Is Walrus Protocol? Sui Decentralized Storage and WAL
Walrus is a decentralised storage network for large files that uses Sui for coordination and payments. How it works, the WAL token, risks, and whether JewelSwap integrates it.
Walrus is a decentralised storage network for large files, called blobs, that uses the Sui blockchain to coordinate storage nodes, payments and proofs that data is available. It was created by Mysten Labs, the team behind Sui, launched on mainnet on 27 March 2025 and is now stewarded by the Walrus Foundation. Its native token, WAL, pays for storage and secures the network through staking.
Walrus at a glance
| Attribute | Detail |
|---|---|
| Category | Decentralised storage and data availability |
| Chain | Sui (coordination, payments and metadata); data is held by Walrus storage nodes |
| Native token | WAL (maximum supply 5 billion) |
| Launched | Developer preview June 2024; mainnet 27 March 2025 |
| Key products | Blob storage, Walrus Sites (decentralised websites), access control through Seal |
| TVL | Not a DeFi protocol; DefiLlama lists Walrus Protocol without a TVL figure (October 2026) |
| Funding | $140M private WAL token sale led by Standard Crypto, announced 20 March 2025 |
| Audits / security record | Design tolerates up to one-third of shards being held by faulty or malicious nodes; protocol described in a 2025 research paper |
| Website | walrus.xyz |
| Integrated with JewelSwap | No: storage infrastructure, not a DeFi venue |
What is Walrus?
Blockchains are bad at storing big files. Every validator keeps a full copy of the chain's state, so putting a video, an NFT image or a website frontend on-chain is expensive. Most apps quietly store that content on ordinary cloud servers instead, which brings back a single point of failure.
Walrus is Mysten Labs' answer for Sui. Files live with a separate set of storage nodes, while Sui keeps the record of who paid for what, which nodes hold which pieces and whether a file has been certified as available. The project released a developer preview in June 2024 and went live on mainnet on 27 March 2025, a week after the Walrus Foundation announced a $140M token sale led by Standard Crypto, with a16z crypto and Franklin Templeton Digital Assets among the participants.
How Walrus works
- Encode. The client splits a blob into many small pieces called slivers using Red Stuff, a two-dimensional erasure code. According to the Walrus paper, this needs only about 4.5x replication to stay safe, far less than storing a full copy on every node.
- Register and pay. The client registers the blob on Sui and pays for storage in WAL for a chosen number of epochs. Each blob is tied to an object on Sui, and its ID is derived from its content.
- Distribute. Slivers go to storage nodes, each responsible for one or more shards during an epoch. Epochs last two weeks on mainnet.
- Certify. Once nodes holding two-thirds of shards sign receipts, those signatures form an availability certificate recorded on Sui. From then on, the blob is guaranteed to be retrievable for the paid period.
- Read. A reader collects slivers from more than one-third of shards, checks each one and rebuilds the original file. Optional aggregators and caches can serve popular files over ordinary web links.
Key features
- Efficient redundancy. Red Stuff keeps data recoverable with about 4.5x overhead, and a lost sliver can be repaired with bandwidth proportional to that sliver rather than the whole file.
- Programmable storage. Because every blob is a Sui object, Move smart contracts can own, extend or reference stored files.
- Walrus Sites. Whole websites can be published to Walrus, giving apps a frontend that doesn't depend on a single hosting company.
- Seal access control. Blobs are public by default. Seal, which Mysten Labs launched on mainnet on 3 September 2025, lets developers encrypt data and set on-chain rules for who can decrypt it.
- Fault tolerance. The system keeps working as long as more than two-thirds of shards are held by honest nodes.
WAL token
WAL has a maximum supply of 5 billion, with 1.25 billion circulating at launch. It has three uses. Users pay for storage in WAL, and those payments are distributed over time to storage nodes and the people who stake with them. Holders can delegate WAL to storage nodes, which earn rewards based on performance. And governance runs through WAL, with voting power based on stake. Our tokenomics guide explains how to read supply and unlock schedules like this one.
Risks and track record
- Data is public unless encrypted. Anything stored without Seal or client-side encryption can be read by anyone. Walrus's own docs warn that Seal isn't designed for highly sensitive regulated data.
- Storage expires. Storage is bought for a set number of epochs. If nobody extends it, the availability guarantee ends.
- Dependence on Sui. Registration, payment and certification all happen on Sui, so a Sui halt, like the ones in January and May 2026, delays new writes.
- Staking concentration. Like any proof-of-stake system, security rests on stake being spread across independent operators.
- Token price risk. WAL is volatile, which affects node and staker income even if storage prices are managed to stay stable.
Is Walrus integrated with JewelSwap?
No. Walrus is storage infrastructure, not a DeFi venue, and JewelSwap has no integration with it.
Storage still matters to anyone using DeFi on Sui. An app's smart contracts may be decentralised while its website, token logos or NFT images sit on one company's server. Networks like Walrus give Sui apps a way to keep that content available too, which is especially relevant for NFT collateral, where the media behind a token is part of what gives it value.
For what JewelSwap does offer on Sui, including JWLSUI liquid staking, auto-compounded farms and NFT-collateralised lending, see JewelSwap on Sui and our roundup of the best DeFi platforms on Sui.
Walrus vs other Sui apps
Walrus doesn't compete with Sui's DeFi apps; it sits underneath them, next to Mysticeti, the consensus layer, as part of Sui's core infrastructure. Where Mysticeti decides the order of transactions, Walrus holds the data that is too large to keep on-chain.
Outside Sui, the closest comparisons are Filecoin, which runs storage deals between clients and providers, and Arweave, which sells pay-once permanent storage. Walrus differs by using Sui for coordination, so stored files can be owned and managed by Move smart contracts.
Related Sui apps
- Sui — the blockchain Walrus uses for coordination, and our directory of Sui apps
- Mysticeti — Sui's consensus protocol
- DeepBook — Sui's native on-chain order book
- Cetus — Sui's largest CLMM DEX
- Haedal (haSUI) — liquid staking for SUI
Learn more on the JewelSwap blog
- Best DeFi platforms on Sui in 2026 — a ranked tour of the Sui ecosystem.
- What is tokenomics? — how to read a token's supply, allocation and unlocks.
- Proof of stake vs proof of work — the security model behind WAL staking.
Frequently asked questions
Is Walrus safe?
Walrus is designed to keep data available even if up to one-third of its shards are held by faulty or malicious nodes. The main practical risks are that stored data is public unless you encrypt it, that storage expires if it isn't extended, and that new writes depend on Sui being online.
What is the WAL token used for?
WAL pays for storage on Walrus, is staked with storage nodes to secure the network, and carries governance voting power based on stake. Its maximum supply is 5 billion.
Is Walrus integrated with JewelSwap?
No. Walrus is storage infrastructure rather than a DeFi venue, and JewelSwap has no integration with it. JewelSwap's Sui products are liquid staking, yield farming and NFT-collateralised lending.
JewelSwap Sui Ecosystem directory · educational, not financial advice. Data as of October 2026. Browse all Sui apps.
