Venue wall clock in nanoseconds since the Unix epoch, the same
integer domain as record header ts and round open_ts. No query
params. Clients measure clock offset with Cristian’s algorithm:
offset = server_time − (t0 + t1) / 2 (equivalently server time
plus half the round-trip), then use Date.now() + offset.
The public API key (alphanumeric access_key string).
Request timestamp, Unix milliseconds (decimal). ±5000 ms replay window.
base64(HMAC-SHA256(secret, "timestamp\nMETHOD\npath?query\nbody")). For the WS handshake the body is empty and the path is /v1/ws.
Current venue time.
Venue wall clock for Cristian's algorithm.
Unix nanoseconds (same domain as record ts / open_ts).
^[0-9]+$"182390"