OKX Spot, Futures, Swap, and Options raw order book feeds now use the public books channel instead of the colocation-only books-l2-tbt channel from 2026-05-21 UTC onward. The OKX recorders were moved from Hong Kong to Tokyo after OKX announced its Hong Kong to Tokyo trading server migration and updated its colocation policy to support DMM/DMT clients only. We were asked to switch from colocation domains to the public network domains www.okx.com and ws.okx.com. A migration data gap affected OKX feeds on 2026-05-21 from 00:00:00 UTC to 05:16:19 UTC. Replaying OKX Spot, Futures, Swap, and Options order book data recorded from 2026-05-21 onward requires Node.js client tardis-dev 16.4.2 or newer, or Tardis Machine 16.4.2 or newer.