Yesterday

Recording by John Lennon.

Recording identifiers

ISRC
JPVI08611190
CopyrightID (CopyrightChains transaction hash)
0x1a9ee66d280177315a633fc7f80c96b4624e5be8f19404c279adb3d891a37beb
Copyright registration time
2026-07-29T22:59:31+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T23:20:38Z
Bitcoin block
960163
Canonical record hash
sha256:b2746d489f8e171904d01db2265c7b3327c28fb9cc06271e01603621c9f52d0b

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.