Node identifier where the log block originates
Name of the log stream this block belongs to
Sequential block number within the stream
Global line number where this block starts
Global line number where this block ends
Timestamp when this log block period began (milliseconds since epoch)
Timestamp when this log block period ended (milliseconds since epoch)
Total number of log lines in this block
Data exchange format for log block information from KOS topics.
Used in topic handlers for log block events, representing block metadata as received from the KOS system. Similar to LogBlockOptions but uses timestamp numbers instead of Date objects for serialization efficiency.