> ## Documentation Index
> Fetch the complete documentation index at: https://docs.theblockchainlibrary.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Quantum-Resilient Privacy Ledger (QRPL): A Sovereign Digital Currency for the Post-Quantum Era

> This preprint presents the architecture for the Quantum-Resilient Privacy Ledger (QRPL), a digital currency platform built for long-term quantum security. The a

# Quantum-Resilient Privacy Ledger (QRPL): A Sovereign Digital Currency for the Post-Quantum Era

This preprint presents the architecture for the Quantum-Resilient Privacy Ledger (QRPL), a digital currency platform built for long-term quantum security. The a

## Abstract

This preprint presents the architecture for the Quantum-Resilient Privacy Ledger (QRPL), a digital currency platform built for long-term quantum security. The author details the implementation of a privacy-preserving layer that utilizes lattice-based cryptographic commitments. Unlike existing privacy coins that rely on ECC, QRPL uses multivariate public-key cryptosystems to facilitate secure, untraceable transactions that remain protected against future decryption efforts. The methodology focuses on balancing the computational intensity of quantum-safe proofs with the needs of a performant, high-frequency currency. The paper describes a state-based approach to validation that minimizes the risk of double-spending while maintaining confidentiality, suggesting a viable path forward for central bank digital currencies (CBDCs) and sovereign financial assets in a post-quantum world.

**Authors:** Serhan W. Bahar

**Publication:** arXiv preprint

**Publication date:** 2025-01-01

## Key findings

* Multivariate cryptography provides a scalable alternative to ECC for privacy-centric ledgers.
* State-based validation models mitigate double-spending risks in quantum-safe environments.
* QRPL architecture supports sovereign requirements for privacy and auditability.
* The ledger achieves a balance between security and transaction throughput.

## Citation

Serhan W. Bahar (2025). Quantum-Resilient Privacy Ledger (QRPL): A Sovereign Digital Currency for the Post-Quantum Era. arXiv preprint. [https://arxiv.org/abs/2507.09067](https://arxiv.org/abs/2507.09067)

## Related knowledge

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***

**Canonical knowledge ID:** `research:quantum-resilient-privacy-ledger-qrpl-a-sovereign-digital-currency-for-the-post-quantum-era`