Yesterday

Recording by John Lennon.

Recording identifiers

ISRC
USSM18100852
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 belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.