Provncloud SDK (Python)

Official Python SDK for privacy-preserving digital signatures and data anchoring.

Provncloud SDK allows you to cryptographically sign data and anchor it to blockchain networks like Arweave AO and Solana without revealing the raw content. Built with a high-performance Rust core (via PyO3), it ensures strict cryptographic standards and cross-platform interoperability.

🚀 Installation

pip install provn-sdk

💻 Usage

from provn_sdk import ProvnSDK
import time

# 1. Initialize the SDK
sdk = ProvnSDK()

# 2. Generate a new Ed25519 keypair
keys = sdk.generate_keypair()

# 3. Create a claim with current timestamp
timestamp = int(time.time())
claim = sdk.create_claim("AI Model Metadata v2.4", timestamp)

# 4. Sign the claim
signed = sdk.sign_claim(claim, keys['private_key'])

# 5. Verify (Offline)
is_valid = sdk.verify_claim(signed)
print(f"Signature valid: {is_valid}")

🛠 Features

• Rust-Powered: High-performance cryptographic operations using native bindings.
• Deterministic: Implements JCS (RFC 8785) for cross-language signature compatibility.
• Payload Safety: Enforces 2KB limits on claim data to prevent broadcast bloat.
• Easy Integration: Simple object-oriented API for key management and anchoring.

📚 Resources

• Monorepo & Examples
• Protocol Spec

⚖️ License

MIT License. See LICENSE for details.