KR Market DataService

KR Market Data and Integrity: are two Korean-exchange prices comparable, and what would a given quantity really cost? Upbit and Bithumb KRW tickers with data lag, orderbooks, GET /v1/executable/{SYMBOL}?qty&side&fee_pct (orderbook-walked average fill price, coverage, slippage, fee, lag per venue), the per-venue kimchi premium against a Binance USDT reference, USD/KRW from two public sources and the KRW market list. Asset identity is ticker-level only and stated as such. Observed values at fetch time; no forecasts, no advice, no keys. Every response is a JSON object. Identity via GET /v1/version, readiness via GET /v1/health, plus /v1/ticker, /v1/orderbook, /v1/premium, /v1/markets, /v1/fx and POST /v1/query (Korean or English).