Back2Back 2

Recording by Brunzyn.

Recording identifiers

ISRC
QZNWZ2133348
CopyrightID (CopyrightChains transaction hash)
0xde1db01dc3fd44c47aef9a1d45ba4c74d205a7498b229730e4ea95738d8eb77e
Copyright registration time
2026-07-06T09:57:56+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T09:18:01Z
Bitcoin block
957020
Canonical record hash
sha256:beee8323f82deb66b185985c87d4da17347069c9d407a98970b81c320b2e52ab

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.