Provenance

Honesty by construction.

OpenTAC is built so the data is citable in an investigation or a paper. Confidence is a first-class field, every claim carries its source, and nothing is invented to fill a gap.

SOURCED

Every claim carries its source

Operator, unit, base and role each link to a primary source. Confidence is recorded as verified, reported or going-dark — never implied. You can click through to the evidence behind any identity.

BLANK

Unknowns are left blank

Where OpenTAC doesn't know, it says so. A field with no sourced value stays empty rather than being guessed or interpolated — the absence is information, too.

GAPS

The gap is the story

Position history is archived without sampling. When a contact goes dark, the gap is shown as a gap and flagged by the dark-span detector — never papered over with a fabricated position.

PREDICTED

Predictions are labelled

Satellite positions are propagated from public orbital elements and are always marked as predictions, with the element epoch and age on screen so staleness is visible. They are never tasking, signals, or payload data.

Scope & conduct

Assets, not individuals.

OpenTAC tracks state and public-service assets. The watchlist scope rules forbid private individuals and minors and are enforced in CI; scope-sensitive categories route to a designated reviewer. A Code of Conduct is shown on first run — the tool is built for accountability and journalism, not targeting.

Read the Code of Conduct Watchlist & scope rules

Trust comes from being checkable.

The application is MIT-licensed and the watchlist is CC-BY-SA — audit every line.

View the source Get started →