Yesterday

Recording by John Lennon.

Recording identifiers

ISRC
USSM18100852
Release date of the album this recording appears on
2016-01-15
CopyrightID (CopyrightChains transaction hash)
0xb87cde074c9942e26cd7793025922038ea4341932ce3e48c8621e825a4705386
Copyright registration time
2026-06-07T19:24:04+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:e7bc7805860bbd787877485e77de9862c562b5a1867856234f77475d6bbecc5c

What this proof establishes

This recording was released in 2016, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.