tdd.nr is a Noir library designed to verify 2D-Doc barcodes using zero-knowledge proofs.

This library enables privacy-preserving verification of structured documents, such as invoices, identity papers, and certificates, without revealing sensitive data.

Use cases include:

• Identity verification: validate government-issued documents.
• Financial transactions: authenticate invoices and receipts.
• Supply chain compliance: verify authenticity of regulatory documents.

The 2D-Doc is a structured digital signature standard widely used for secure document authentication.

Components:

• 2D-Doc barcode for documents.
• Noir: ensuring efficient and privacy-preserving computations.

In Nargo.toml file, add the following dependency:

[dependencies]
tdd = { git = "https://github.com/teddav/tdd.nr", tag = "main" }

Add this line:

use tdd::*;

Use bb to get the number of gates in the circuit:

bb gates -b circuit.json | jq ".functions[0].circuit_size"

You can find an example in ./examples/tdd1

Contributions are welcome! To get started:

• Fork this repository.
• Create a feature branch for your changes.
• Submit a pull request detailing your improvements.

This project is supported by Hyli, the new proof-powered L1 to build the next generation of apps, as part of the Hyli grant program.