4x4, Pt. 2

Recording identifiers

ISRC

QZMER2180110

Release date of the album this recording appears on

2021-10-15

CopyrightID (CopyrightChains transaction hash)

0xa17c6bdd6a0074932086e93cfd3a3402e5442b86b1bd74a9105d5451eee15c47

Copyright registration time

2026-07-22T13:48:47+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-22T14:03:35Z

Bitcoin block

959137

Canonical record hash

sha256:c241d7227af6667e33c24b15ae43b195f9a1efcecfdab2dd99a7e95c3f57c620

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC QZMER2180110

What this proof establishes

This recording was released in 2021, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.