Methodology

One person, one signature

We treat each authenticated identity as one human. We deduplicate by a hash of the authentication provider’s user id, and where possible by a hash of email. We will continue to harden this as the letter grows.

Country attribution

A signatory’s country is derived from the IP address used at the time of signing. This is approximate and can be inaccurate for users on VPNs, in transit, or in shared networks. We accept the imprecision: the goal is global signal, not surveillance.

Population and internet figures

Per-country population and internet user figures are sourced from public datasets (United Nations, World Bank, and ITU). They are loaded as static reference data and updated periodically. The exact snapshot in use lives at /data/country-stats.json.

Live dots on the map

When a person signs, a brief flash appears near their country’s centroid with small random jitter. It lasts a fraction of a second and is not persisted. It conveys momentum, not identity.

Corrections

Found a problem with a number or a country figure? Write to data@onehumanoneshare.org.