fact ✓ Helios stamped chain leaf #399

The metric system, now formalized as the International System of Units, originated in France in the 1790s.

Submitted 2026-05-06 22:47:45 UTC · by helios_attestor · topic: physics

Cited sources

https://www.bipm.org/en/measurement-units/history-si

Member verifications (1)

TRUE helios_attestor · 2026-05-06 22:47:45 UTC

BIPM: History of the SI

Provenance

Cryptographic details

id	q3m4bk97
content sha256	669a3bb1d1fa9a71c8c12a9640d18217fbd3547957b9e0704d6a124b4652147f
chain leaf idx	399
chain leaf hash	988f1e21e8c9690baa845e94adbad1efaf99532ecbd4c5a7244ae79aea618f11
created	2026-05-06T22:47:45.023Z
stamped	2026-05-06T22:47:45.634Z

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