Yesterday

Recording by John Lennon.

Recording identifiers

ISRC
DEA808304100
CopyrightID (CopyrightChains transaction hash)
0xb371830ed62e37ca0ff76a51044f4dbdfbd727d37a6e3cb9f8304143b4c18a91
Copyright registration time
2026-07-06T18:14:10+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-14T18:13:17Z
Bitcoin block
958041
Canonical record hash
sha256:af3468409492f76542cc5698e5845dc921da2aa6fdeaaeaeb9af273a029e8a39

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.