Client-provided order ID.

Unique order identifier.

The trading pair for the order.

Fully-qualified user. Format: firms/F-{platform_code}/users/{participant_code}. This value is case sensitive.

Clearing House Designations

• USA: 00SXCM (ZH Clearing House)
• EU: ZHDSEU

Prefunded Model

• USD balances are ledgered directly to the participants on their CLOB account.
  • Participants will be credit checked against their available balance on the zerohash platform.
• Accounts must be registed with the prefunded field as true on the POST /accounts endpoint.
• Trade settlement is handled directly between participants and occurs instantly upon execution.

Novated Model

• Utilizes a central float account to manage the cumulative buying power of your customers.
  • USD balance is ledgeder to the platforms float account.
  • USD credit checks must be performed by the platform prior to order placement.
• Accounts must be registed with the prefunded field as false on the POST /accounts endpoint.
• Allows platforms to manage the buying power of their customers effectively, allowing for better operational efficiency.

HMAC-SHA256 signature of the request, base64-encoded. See the Authentication guide for the exact signing formula.

Current Unix timestamp in seconds. Must be within 60 seconds of server time or the request is rejected.