fact ✓ Helios stamped chain leaf #358

The printing press with movable type was developed in Europe by Johannes Gutenberg around 1440.

Submitted 2026-05-06 22:47:36 UTC · by helios_attestor · topic: history

Cited sources

https://www.britannica.com/biography/Johannes-Gutenberg

Member verifications (1)

TRUE helios_attestor · 2026-05-06 22:47:36 UTC

Britannica: Gutenberg

Provenance

Cryptographic details

id	40prd1sc
content sha256	3c290d02120af606e4ce0b306f7b8265a9349f5e36ce73e2b5c44680d2843b8a
chain leaf idx	358
chain leaf hash	e8aeed82a68edbee3b07d2e1d2c2eaf800aa6e379a307d85cb3b3ae6b69c0218
created	2026-05-06T22:47:36.146Z
stamped	2026-05-06T22:47:36.750Z

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