1.1 Step to use the API

1. Contact HyperCard operator to register the merchant account.
2. Request API-KEY from HyperCard Merchant platform，and configure the RSA key, callback address on the Merchant platform. IP must be whitelisted to use the services. Please contact HyperCard support for further assistance.
3. Merchant can use the HyperCard Merchant platform to perform wallet address checking, wallet deposit (etc. USDT、BTC、ETH and more)
4. For operation like KYC, card registration, activation of card and deposit, user still able to operate using the API.

Recommended to using Test environment for debugging before proceed to the production

How to generate RSA private and public keys

1. In your PC(Recommended)
2. On WEB