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A crypto wallet card experience is a consumer app with -verified users, multi-chain wallets, on-ramps, and a Visa card funded directly from the user’s wallet. Sumvin provides the identity, wallet, and card-management substrate; partners compose it with on-ramp and card-issuing integrations.

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Slices that ship today

The identity and wallet layer is available now. You can:

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Slices gated on partner unblock

Two pieces of the flow are not yet end-to-end on Sumvin and depend on external partner integrations:
  • Meld Buy/Sell (on-ramp) — in progress. Reference material lives at Meld overview and Meld Buy/Sell. Account linking through Meld is already integrated — see Meld account linking.
  • Baanx end-to-end card issuance — pending partner unblock. The card management API shape is documented; the provisioning side is not yet live. See Baanx issuance.
  • Off-ramp is deprioritised for this release.

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Which primitives back it

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Where to start

  1. Onboarding guide — bring a user online end-to-end.
  2. Wallets guide — multi-chain wallets and the Safe smart account that backs the card.
  3. Card issuing overview — the wallet-funded card surface.
  4. Meld overview — account linking, on-ramp, and KYC passthrough.