DigitalShield

DigitalShield pairs a hardware wallet with a companion app for self-custody signing. Keys are generated and held inside an EAL6+ certified secure element, signing happens on the device, and signed payloads cross between app and device one way as QR codes under ERC-4527, so neither Bluetooth nor a cable is used and physical isolation reduces exposure if the host machine is compromised. The app handles multi-account, multi-chain balances and transaction construction, with chain data served by an in-house explorer.

It positions itself as a cold-signing device for long-term holders and multi-chain users, with core code open for outside review. Verifiable points: support for more than fifteen thousand assets across Bitcoin, Ethereum, Solana and major stablecoins; firmware and contracts reviewed by third-party auditors; and a September 2026 app release that also sped up transaction lookups in the companion explorer.