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Quantum Private and Auditable Ledger (QPADL)

This J.P. Morgan report details the QPADL architecture, a distributed ledger solution designed to meet the requirements of regulated financial institutions in a

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Abstract

This J.P. Morgan report details the QPADL architecture, a distributed ledger solution designed to meet the requirements of regulated financial institutions in a post-quantum landscape. The paper proposes a framework where auditability and privacy coexist through a combination of quantum-resistant zero-knowledge proofs and permissioned consensus protocols. The architecture is modular, allowing for the substitution of cryptographic modules as new standards in PQC emerge. The methodology focuses on enterprise-grade performance, addressing the throughput limitations often associated with quantum-safe signatures in high-frequency financial environments. The report provides case studies on how such ledgers could function within existing regulatory structures, maintaining compliance while protecting sensitive financial data from future quantum decryption threats. Authors: J.P. Morgan Chase & Co. Publication: Technical Report Publication date: 2026-01-01

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Key findings

  • Modular cryptography is essential for enterprise-grade financial ledgers.
  • Auditability and privacy can be effectively balanced using quantum-safe zero-knowledge proofs.
  • Permissioned networks allow for performance optimizations not feasible in public chains.
  • Standardization of PQC is critical for institutional adoption.

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Citation

J.P. Morgan Chase & Co. (2026). Quantum Private and Auditable Ledger (QPADL). Technical Report. https://www.jpmorganchase.com/about/technology/blog/quantum-resistant-distributed-ledger
Canonical knowledge ID: research:quantum-private-and-auditable-ledger-qpadl