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2026-4-10

2026-04-10

Futures V3 & Testnet API Updates

  • Added POST /fapi/v3/sub-accounts/bind — Bind Sub-Account endpoint to Futures V3 and Testnet (EN & ZH):
  • Requires two independent signatures: sub-account (childSignature) and master account (signature)
  • Master account signature must use the wallet private key (not the API Key)
  • Supports EVM (EIP-712) and Solana (Ed25519) address types
  • Only whitelisted addresses are supported; contact the project team for configuration