Ueno Bank adopts post-quantum security with QANplatform blockchain
Paraguay’s largest bank, Ueno Bank, serving 2.2 million users, has announced the implementation of post-quantum document protection on QANplatform — a quantum-resistant Layer-1 hybrid blockchain that provides mathematically verifiable, immutable timestamps and signatures aligned with U.S. NIST standards.
Due to the potential threat of quantum computers breaking financial institutions’ cryptographic data, NIST strongly recommends that banks, insurance companies, and government agencies adopt quantum-resistant cryptography by 2030. Ueno Bank has become one of the first to announce its transition to post-quantum security.
The bank will use post-quantum cryptography to sign original documents and record their hashes on a private QAN blockchain deployed locally to ensure internal security. For external verification, hashes can also be anchored to the public chain, creating independently verifiable, tamper-proof timestamps.
“Ueno Bank is a tech-driven financial innovator, aiming to lead in both innovation and security,” said Juan Manuel Gustale, President of Ueno Bank, adding that adopting such technologies strengthens customer trust.
Why QANplatform fits enterprises
The multilingual smart contract engine QAN Virtual Machine (QVM) allows teams to build solutions using familiar Linux-compatible programming languages and connect with DevOps tools like Docker and Kubernetes. Fast cloud deployment enables private or public QAN networks on AWS, Microsoft Azure, or Google Cloud in under five minutes, supporting pilots and regulated workloads.
As reported by Cointelegraph, a key advantage of QANplatform is its Ethereum Virtual Machine (EVM) compatibility, allowing Ethereum-based projects — DEXs, NFTs, DeFi, and others — to migrate seamlessly to the quantum-resistant platform. It integrates with Chainlink and Band Protocol oracles and introduces a developer rewards model, incentivizing contract reuse and interaction on the public chain.
Signature components include QAN XLINK (ML-DSA-65 cross-signing device) and a hybrid deployment management system. QANplatform is a member of the Linux Foundation and one of the first 20 members of its Post-Quantum Cryptography Alliance; its technology was implemented in the public sector of an EU country in 2024.
For Latin America’s financial sector, Ueno’s project offers a replicable model: adding post-quantum signatures to existing workflows, anchoring proofs on a corporate hybrid L1 blockchain, and expanding use cases from documents to identity, payments, and other critical workloads.
As we wrote, Novo Nordisk Foundation commits €80M to launch QuNorth quantum initiative
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