untitled 03 | 05.28.2013.

Recording by Kendrick Lamar.

Recording identifiers

ISRC
USUM71601673
CopyrightID (CopyrightChains transaction hash)
0x8bd97c55da08fd31c694ebb790df0405db402ab2c80f05930ba6066241b9142e
Copyright registration time
2026-06-01T19:52:20+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:db0faec6fa68b26585b806322b99ebd04eb6d3420314ff5ecd009cc7ad8ef6d0

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.