Turkey premium: TRY and USDT reference prices from eight Turkish spot venues (median of eligible books), per-venue book statuses, premium in bps via USDT/TRY and against the ECB fix.

Free with an account key (Authorization: Bearer bk_...; a free key comes with any verified account, required for programs from 2026-09-10). Licence: personal and research use with attribution; commercial use with the Business plan. Query: pair, days.