The Crossmint wallets architecture is designed to solve the most critical limitations in traditional wallet infrastructure:
  1. Vendor lock-in: avoid ever needing to export private keys or abandon your existing wallet addresses.
  2. Single point of failure: eliminate reliance on fragile, single keypairs for access and control.
  3. Permissions you can trust: enforced onchain, not via opaque TEEs or off-chain middleware.

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Smart Contract Wallets

Crossmint uses smart contract wallets to unlock support for having multiple signers and onchain programmable logic.
A signer is a digital identity (such as an email, passkey, or external wallet) authorized to approve actions on the wallet’s behalf.
This enables:
  • Seamless provider migration: update just the admin signer, without changing the wallet address.
  • Built-in security: use multiple signers for MFA and recovery flows enforced onchain.
  • Granular control: assign delegated signers with scoped, onchain permissions to act on behalf of the wallet.
  • Shared access between users or roles, without compromising wallet integrity.
All permissions are enforced onchain and fully auditable and remove the need to trust opaque infrastructure or Crossmint’s backend. The wallet logic stays visible, enforceable, and portable.