Song for John

Recording by Yoko Ono.

Recording identifiers

ISRC
US38W1728308
CopyrightID (CopyrightChains transaction hash)
0xbca2b863d0c66584284023a406d48a2202313303ce46bc9c965550fce2746ff0
Copyright registration time
2026-06-25T17:10:59+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:5362b6aaad1ed8f86a4f44bc5e221c6ba74b11270164332c9770737fc358f1f5

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.