Back to Black

Recording by VASSY.

Recording identifiers

ISRC
TCACU1640209
CopyrightID (CopyrightChains transaction hash)
0x41f895b792ea20233903055f7d6335b189beeb90aa24269699a44fd44b9d7dae
Copyright registration time
2026-07-31T08:02:40+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T08:26:41Z
Bitcoin block
960368
Canonical record hash
sha256:e00c96e012b127a5259ed814ab414ba0d341c085982b7dcc15cc9acba9de95f3

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.