Street singers farewell

Recording by Kurt Weill.

Recording identifiers

ISRC
ATB159600455
CopyrightID (CopyrightChains transaction hash)
0x9da37acf106be6cbdd71fb04943386786f8db77854bd4d020d3507ba73ec303d
Copyright registration time
2026-07-06T10:26:40+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T15:12:44Z
Bitcoin block
957055
Canonical record hash
sha256:752320039ca7d561eba77ac2e770288d061dfca9e3869e1a3fb36f34a1f12813

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.