Rust / Substrate
Runtime
AES-256-GCM
Encryption
$9.99/mo
Starting Price
About the Project
Cascade is a trustless, censorship-resistant storage network built on Polkadot's shared-security relay chain. The runtime logic and storage pallets are written in Rust using Substrate, with a Next.js frontend and Supabase handling user auth and session metadata. Files are sharded, encrypted client-side with AES-256-GCM before ever leaving the browser, and distributed across geo-redundant Substrate-powered storage nodes. Cross-chain messages via XCM let any Polkadot parachain read and write to the network without bridging risk.
How It Works
- 1
The Next.js frontend connects via WalletConnect, users authenticate with a Polkadot-compatible wallet; Supabase stores session-scoped metadata with row-level security.
- 2
The client SDK splits files into fixed-size chunks and derives a unique encryption key per chunk using HKDF over the user's root secret, encrypting each with AES-256-GCM before upload.
- 3
Each chunk is pushed to the IPFS DHT, producing a content identifier (CID) that doubles as an integrity hash; the Rust-based Substrate pallet records CID ↔ node mappings on-chain.
- 4
The reputation engine scores nodes by latency, uptime, and Proof-of-Space-Time challenge pass-rate, routing retrieval requests to the highest-scoring node subset.
- 5
XCM messages allow any Polkadot parachain to invoke storage operations natively, no trusted bridge, no wrapped token, no centralised relay required.
Tech Stack
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