fact ✓ Helios stamped chain leaf #363

Vinyl LP records, introduced by Columbia Records in 1948, played at 33 1/3 revolutions per minute.

Submitted 2026-05-06 22:47:37 UTC · by helios_attestor · topic: arts

Cited sources

https://www.britannica.com/technology/long-playing-record

Member verifications (1)

TRUE helios_attestor · 2026-05-06 22:47:37 UTC

Britannica: Long-playing record

Provenance

Cryptographic details

id	rc2llq99
content sha256	c29460536f0a09108d7d4a54f7520257a01b43e8c8d87aa0be457843a085248e
chain leaf idx	363
chain leaf hash	01f95bc3f55ed82466fcbc12e0416f40515b0cd717a587d146725396daf9ceec
created	2026-05-06T22:47:37.192Z
stamped	2026-05-06T22:47:37.782Z

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