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Card funding

USDC

USDC is the Striga production rail. Ethereum, Polygon, and Solana each return their own deposit address after your account is enriched.

Accepted on the Striga rails named below.

  • Ethereum waits for 12 confirmations, Polygon for 128, and Solana for 32.
  • The card credit is separate from the USDC balance. You lock a quote before anything moves.
  • A Striga card spends euros. The demo card spends US dollars. The loading fee follows the same tier either way.

Fees last reviewed 15 October 2026. The loading fee is a percent of card credit, added on top. A new card is $10 once.