Question about Exchange Account Objects

Hi Fireblocks Support,

I was reviewing the “Exchange Account Objects” documentation and noticed that Poloniex and OKX (previously OKCoin) appear in the list of exchanges. I attached a screenshot of that list for reference.

Could you please clarify whether the presence of these exchanges in the documentation means they use Fireblocks for settlement services, custody, or other settlement-related integrations? Specifically:

Do Poloniex and OKX use Fireblocks for on-chain settlement, intra-exchange settlement, or custody of exchange assets?

If they do use Fireblocks, is the integration a custodial service, an API/integration for settlement workflows, or something else?

Are there any public references or integration docs that describe the exact nature of these relationships?

Thanks in advance; any clarification or pointers to documentation would be very helpful.

Best regards,

Judson Pontes Sousa