In brief
- Firms are building quantum-resistant wallets ahead of blockchain upgrades.
- Approaches range from MPC upgrades to layer-2 overlays.
- Experts say user behavior and coordination remain weak points in quantum upgrade rollouts.
Crypto companies are moving to secure their wallet and custody offerings against a future quantum computing threat, aiming to upgrade user-facing infrastructure faster than blockchains can change their core protocols.
The shift reflects a growing view that network-level upgrades to blockchains like Bitcoin and Ethereum could take years, leaving wallets exposed in the meantime. And the timeline for the purported “Q-Day” threat to crypto could be coming faster than expected, with one recent estimate putting…
