Draftby Digital Asset

CIP-0114: Zero-Knowledge Transaction Privacy Enhancement

Overview

CIP-0114 proposes enhanced privacy capabilities for Canton Network transactions through the integration of zero-knowledge proof technology. While Canton already provides sub-transaction privacy through its Daml-based architecture, CIP-0114 extends privacy guarantees to include balance hiding, transaction amount confidentiality, and selective disclosure mechanisms using ZK-SNARKs. The proposal defines new transaction types that leverage zero-knowledge proofs for enhanced confidentiality while maintaining compliance with institutional requirements through designated verifier proofs. CIP-0114 also specifies how ZK proofs interact with Canton's existing privacy model and cross-domain synchronization protocol.

Impact on Canton Network

Enhanced ZK privacy would make Canton the most privacy-capable institutional blockchain, enabling financial institutions to transact with cryptographic confidentiality while maintaining regulatory compliance through selective disclosure to authorized parties.

About Canton Network Governance

Canton Improvement Proposals (CIPs) are the formal mechanism for suggesting changes to the Canton Network protocol, standards, and ecosystem processes. Each CIP goes through a lifecycle from Draft to Proposed to Active or Implemented, with community review and validator consensus required for adoption.

The CIP process ensures that protocol changes are carefully considered, widely reviewed, and transparently documented. This governance framework is essential for maintaining Canton's position as the leading institutional blockchain, where predictability and stability are paramount.

Frequently Asked Questions

What privacy does CIP-0114 add?

CIP-0114 adds ZK-SNARK-based privacy for balance hiding, transaction amount confidentiality, and selective disclosure, extending beyond Canton's existing sub-transaction privacy.

How does CIP-0114 maintain compliance?

Designated verifier proofs enable authorized regulators and auditors to verify transaction details while keeping them confidential from other network participants.

Is Canton already private?

Yes, Canton provides sub-transaction privacy through its Daml architecture. CIP-0114 adds cryptographic confidentiality for amounts and balances using zero-knowledge proofs.