Signed Zero-trust DaTa. Pronounced "Samizdat".

Signed CBOR for censorship-resistant data.

TLDR: cryptographically-signed CBOR envelopes containing data, metadata, and everything needed to trustlessly verify it.

• Whitepaper
• Website

• Zero-trust: SZDT archives are verified using cryptographic hashing and public key cryptography. No centralized authorities are required.
• Censorship-resistant: Because trust is decoupled from origin or transport, SZDT archives can be distributed via HTTP, Torrents, email, airdrop, sneakernet, or anything else that is available.
• Decentralizable: SZDT decouples trust from origin, so data can be distributed to many redundant locations, including multiple HTTP servers, BitTorrent, hard drives, etc. Lots Of Copies Keeps Stuff Safe.
• Anonymous/pseudonymous: SZDT uses keys, not IDs. No accounts are required.
• Streamable: CBOR is inherently streamable, and Blake3 hashes enable streaming cryptographic verification.
• Any kind of data: Memos can wrap API responses, file bytes, structured data, or anything else. They also provide a mechanism for adding self-certifying metadata (headers) to any data.

• P2P: SZDT is transport-agnostic. It's just a file format.
• Efficiency: SZDT prioritizes simplicity over efficiency.

• Node v24 or later
• Rust v1.88 or later

• Clone the repository
• Run ./scripts/setup.sh to install development dependencies (wasm-pack and just)

Run just default to see a list of build commands.

just build_szdt_web

From the project directory:

cargo install --path ./rust/szdt-cli

This will install the szdt binary to ~/.cargo/bin (which should have been added to your path by the Rust installer).