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Crypto

Big banks expand bitcoin custody vaults, but key issue turns to quantum computers

Global big banks are expanding bitcoin custody as a strategic business, but a report warns today’s crypto custody infrastructure could face structural risks in a future quantum-computing era. Swiss digital asset technology company Taurus said major custodians carry significant risk during a shift to quantum-resistant cryptography. It said upgrades require blockchain protocol changes and broad coordination. The report argues MPC may face bigger hurdles than HSM, though the view is contested.

Crypto

Stellar pursues quantum-resistant migration without address changes, signing key replacement central

The Stellar Development Foundation unveiled QPP, a roadmap to prepare the Stellar (XLM) network for quantum computers, and said it aims to complete a shift of all accounts to quantum-resistant signatures by the end of 2027. The plan is designed to keep existing addresses and transaction histories intact while replacing only signing keys. It outlines a three-stage rollout from 2026, adds NIST-standardised ML-DSA support, and raises dormant-account handling as a remaining issue.

Crypto

Stellar launches quantum security plan to upgrade all accounts by end-2027

Stellar developers unveiled a three-step roadmap to shift to quantum-resistant cryptography to counter threats from quantum computers. The plan starts in 2026 with changes for corporate wallets and institutions, then a 2027 protocol upgrade enabling all accounts to add quantum-resistant signers while keeping existing addresses. A final phase will retire the current cryptography, with timing to be decided later. The foundation flagged dormant accounts as a key challenge.