OKX founder Star: Cross-site UIDs should be globally unique, or transfers based on UID alone should be prohibited.

OKX founder Star said on November 8 that UIDs across the exchange's different sites must either be globally unique or users should be barred from making cross-site internal transfers based on UID alone. He warned that if the same UID exists on multiple OKX-branded platforms while UID-only transfers are permitted, funds could be sent to the wrong account because the recipient identifier would be ambiguous. The comment frames UID consistency as a basic account-identity safeguard for a multi-site exchange brand rather than a product feature. It matters because UID-only internal transfers are a common convenience across exchange venues, and collisions can turn a routine deposit into a manual recovery case. What to watch next is whether OKX enforces global UID uniqueness or disables UID-only cross-site transfers, and whether peer exchanges with similar multi-domain structures follow suit.