What I like about Walrus is that it doesn’t assume data is available just because someone said it is. It actually proves it.
Before anything gets written, the user generates a deterministic blob ID and locks in storage capacity on-chain. That step matters because it ties the write to real economic commitment, not trust. The data is then encoded and sent out to multiple storage nodes, where each node verifies and stores its own piece independently.
Instead of relying on a single confirmation, Walrus waits for cryptographic receipts from a supermajority of nodes. Once enough receipts are collected, they’re bundled into a Proof of Availability and published on-chain.
Only after that happens does the data become readable across the network. From that point on, it can repair itself if pieces go missing, all without ever placing the raw data on the blockchain itself.
To me, that’s the key difference. Availability isn’t assumed. It’s enforced.
