Yesterday

Recording by John Lennon.

Recording identifiers

ISRC
DEE868200139
CopyrightID (CopyrightChains transaction hash)
0xc32c61f852ebe7523aa6f781f2e6aa00e66f1033d09c2eaf8b6fd9aa9a5de392
Copyright registration time
2026-06-22T18:17:58+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:48b9026f343fcce2223652f287c137cf949f4e639fa645793bb929f3e06ded83

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.