# UnixTimestamp Unix epoch seconds. Decodes/encodes as `Int64`. ``` struct UnixTimestamp ``` ## Overview Used for Bitcoin Core `NUM_TIME` fields: `time`, `blocktime`, `mediantime`, `lastsend`, `lastrecv`, `conntime`, etc. ```swift let ts = UnixTimestamp(seconds: 1_700_000_000) print(ts.date) // 2023-11-14 22:13:20 +0000 print(ts.description) // ISO 8601 formatted string ``` > Note: Some Core fields use 0 as a sentinel for “not set” (e.g., genesis > `mediantime`). Check `seconds == 0` at the call site where contextually > appropriate, or use `Optional` for fields that can be absent. > Note: `locktime` is **not** a `UnixTimestamp` — it’s dual-use (block height > when < 500,000,000, epoch seconds when ≥ 500,000,000). > Note: `getnettotals.timemillis` is epoch **milliseconds** and uses `Int64`. > Note: `ban_duration` / `time_remaining` are durations in seconds, not > epoch timestamps, and use `Int64`.