- Meta’s public time service now speaks NTS (Network Time Security, RFC 8915) at nts.meta.com. Packets are authenticated, so a device can verify the time came from us and was not modified on the way.
Official announcementMeta Engineering
NTS: Authenticated Time at Meta
From the official release
- Our NTS servers hold no per-client state. Cookie keys are derived, not stored and not replicated.
- We’ve open sourced everything, including the protocol, server, client through Meta’s Time library on GitHub.
- We’re also encouraging everyone, particularly those who maintain an NTP client on Android or iOS, to join us in enabling NTS support.
We’ve previously written about building a more accurate time service at Meta scale – migrating from ntpd to chrony, going from 10 milliseconds to 100 microseconds, and opening time.meta.com to everyone.
That work made time precise. This work makes it verifiable.
Why NTS?
This is a short excerpt. Read the full announcement on the official source.
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