Every system agrees on now. We built it.
CHRONO is the reference clock the internet quietly runs on. Ten years, one obsession: make a billion machines share a single, honest instant. Scroll to walk the record.
A decade, one heartbeat.
Ten years of shrinking the gap between what a machine thinks the time is and what it actually is. Each milestone lights as you reach it.
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2015 Zero hour
Founded above a watch shop
Two engineers in Geneva got tired of arguing about whose server was right. Their first prototype synced two machines to within 40 milliseconds — and felt like magic.
First sync: 40 ms apart -
2017 The drift problem
Chrono Core ships
Every clock drifts. We shipped Core, a daemon that models temperature, load and network jitter to hold data-center drift under a quarter of a microsecond. Twelve customers on launch day.
Drift: < 250 µs -
2019 Sub-millisecond
One heartbeat, 1,200 servers
Our first fleet-scale deployment kept twelve hundred servers on the same instant across three continents. Series A followed six weeks later. The word "impossible" got quietly retired.
1,200 nodes · one clock -
2021 Atomic
A rubidium reference everywhere
We partnered with three national labs and put an atomic reference in every region we serve. Time stopped being borrowed from the network and started being generated on-site.
Atomic in every region -
2023 Ordering
The Ledger of Now
Chrono Ledger answers a harder question than "what time is it?" — it answers "what happened first?" Forty billion transactions a day, each stamped with an order no two machines dispute.
40B events/day, ordered -
2025 You are here
One clock for Earth
Today, three hundred edge regions agree to within a millionth of a second. From payment rails to trading floors to the grid itself — when it has to be the same "now," it runs on CHRONO.
99.9999% agreement -
2027 Roadmap
Beyond the second
Next: relativistic corrections for low-earth-orbit fleets and a public reference anyone can query for free. Because a shared "now" shouldn't be a luxury good — it should be infrastructure.
Open reference, 2027
We believe a shared instant is the quietest foundation of trust — the reason a payment settles once, a message arrives in order, and a grid stays lit. Time is the layer nobody sees. We keep it honest.
Put a real clock under your stack.
Start with a single region in minutes. Scale to the whole planet when you need to.