Welcome to the CHIP Send documentation.
Authorization: Bearer <API Key>
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Given the sensitive nature of the API, which enables tasks such as sending payments, added security measures are crucial. Thus, you also need the API Secret to sign the requests you make. This key should never leave your server and must be stored securely. Each request should include both an epoch (containing Unix time) and a checksum (a hash for epoch signed with the API Secret) in the header.