Blackbird

Recording by John Lennon.

Recording identifiers

ISRC
USA561300549
CopyrightID (CopyrightChains transaction hash)
0xb007ffdefb08a2ed7cad5b11bd80c6ec28bcd0df66f3faf2b201e70e7f403d4c
Copyright registration time
2026-06-18T13:43:06+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:8274acb3fd6e3986b556f3cca59d27afda53aadae030a54b29498743db2b6266

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.