Guest Post: Why Tokenised Assets Need Quantum-Ready Security
AI-summarised brief · reviewed before publication
Tokenisation is moving from concept to implementation on Wall Street, with banks and asset managers testing blockchain‑based issuance, settlement and administration of assets. Ludovico Rossi of Brickken argues the technology’s potential is nascent, but it promises reduced administrative costs, faster settlement and simpler compliance. At the time, quantum computing threatens the public‑key cryptography that underpins blockchain signatures. A Google Quantum AI whitepaper predicts a machine with under 500,000 physical qubits could break elliptic‑curve signatures in minutes, exposing keys and control mechanisms for tokenised securities that may exist for decades. Rossi expects institutions to adopt “cryptographic agility,” updating algorithms as standards evolve, and cites the G7 post‑quantum roadmap and NIST draft to ban ECDSA after 2035 as signals of industry migration.
💡 Why It Matters
- · Long‑lived tokenised assets could become insecure overnight if cryptography isn’t upgraded, forcing financial firms to redesign custody and compliance frameworks before quantum threats materialise.
