Attest

Two official sources. One consensus pair.

A river gage from USGS and an air temperature from NASA POWER. Different publishers. Nodes agree on the numbers.

Simulate ready. Not deployed to a DON. The workflow returns consensus JSON. It does not call a signed report yet.

Open the lab Request a walkthrough
Last local simulate

Cameo stage next to Grand Junction air.

Numbers from a local simulate. They will move the next time you run it.

USGS 09095500
3.68 ft
Colorado River near Cameo · gage height · median of nodes
NASA POWER T2M
27.8 C
8-day lagged 2 m air at Grand Junction · median of nodes
Aggregation: site name identical · stage median · observation time as unix seconds, then median. ISO timestamps are not identical across a DON.
How it works

Two fetches. Then agreement.

  1. Cron fires. Each node GETs USGS Instantaneous Values and NASA POWER for the same lagged day.
  2. Nodes agree on the site name. They take the median stage and the median observation time.
  3. You get a small JSON report. Change the site id tomorrow and simulate again.
Run it

On your machine.

From the lab root. No deploy.

export PATH="$HOME/.cre/bin:$PATH"
cd ~/cre-lab
cre workflow simulate official-water --target staging-settings --non-interactive --trigger-index 0
For

You, if

You already settle claims, underwrite a basin, or report official columns and need a repeatable pair of numbers.

Not for

Standing up a water utility. Tokenizing a ditch. Wrapping a laptop collector and calling it truth.