Tango Notturno

Recording by Hans Otto Borgmann.

Recording identifiers

ISRC
DEE378200250
CopyrightID (CopyrightChains transaction hash)
0x27a43b78993743ff9a4828ee86eef33f2adcdcc6d8a471119ad66f0754726ec0
Copyright registration time
2026-07-07T11:44:43+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:37ea31050fcc29050a032741ef13b8011104e1abef7debc8a76e94466bd4c1b6

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.