Ueno Bank Pioneers Post-Quantum Document Security with QANplatform

[AIcash]

Paraguay’s largest bank is going quantum-safe. Ueno Bank has begun anchoring critical e-documents on QANplatform, a layer-1 hybrid blockchain built to resist quantum attacks and provide mathematically provable, immutable timestamps that comply with the U.S. NIST’s next-generation cryptographic standards.

Why Quantum Security Matters for Finance

Quantum computers will one day break today’s public-key cryptography, threatening e-signatures, archives, and audit trails.

Timeline pressure: NIST urges a full migration to quantum-resistant cryptography before 2030.

Attack risk now: Adversaries can “harvest now, decrypt later,” storing encrypted traffic until quantum tools can crack it.

Banks, insurers, and governments can’t afford to wait—especially for long-lived contracts and compliance records.

How Ueno’s Implementation Works

SignQuantum Add-On: Layers post-quantum signatures onto existing e-signature workflows.

QAN Private Blockchain: Stores tamper-proof document hashes on a permissioned chain for internal assurance.

Optional Public Anchoring: Hashes can also be anchored to a public QAN chain for independent verification.

Standards Aligned: Uses ML-DSA-65, NIST’s primary post-quantum signature standard.

This makes Ueno the first bank worldwide to run this combined solution in production.

Why QANplatform Fits Enterprise Scale

Hybrid by design: Private + public blockchain model for regulated workloads.

EVM-compatible: Seamless migration for Ethereum-based projects like DeFi, DEXs, and NFTs.

Fast deployment: Spin up QAN networks on AWS, Azure, or Google Cloud in under 5 minutes.

Dev-friendly: Supports multiple Linux-compatible languages and integrates with Docker/Kubernetes.

Developer royalties: Built-in incentives when smart contracts are reused on the public chain.

Proprietary tools like QAN XLINK (ML-DSA-65 cross-signer) and strong governance make it enterprise-ready.

Policy & Industry Signals

G7 Cyber Expert Group: Calls for timely quantum-resilient adoption across financial services.

SEC Framework: Proposal for a “Post-Quantum Financial Infrastructure” to guide orderly market transitions.

Regional impact: Offers a template for Latin American banks to secure documents, then scale to identity, payments, and custody.

“Adopting SignQuantum and QANplatform both mitigates future risks and builds confidence with our customers and partners to bring a new standard of cybersecurity to the financial sector.”
— Juan Manuel Gustale, President, Ueno Bank

“Seeing QANplatform deployed in robust, real-life environments like Ueno Bank shows how quantum-resistant blockchain can work today.”
— Johann Polecsak, CTO & Co-founder, QANplatform

The Bigger Picture

Ueno Bank’s move is a measured first step toward a quantum-safe financial system. By starting with high-value records and layering post-quantum signatures on a quantum-resistant blockchain, it sets a repeatable path for other banks, insurers, and public agencies worldwide.

Bottom line: The quantum countdown has already begun. Ueno’s approach shows how to protect critical data today—and be ready for the cryptographic future.