Opéra de Quat'sous - Complainte de Mackie: Complainte de Mackie

Recording by Kurt Weill.

Recording identifiers

ISRC
FRUM71501782
CopyrightID (CopyrightChains transaction hash)
0x7c47cf73dbbfb3285246ee233093ef3ffee8b2491d12a7fd41a621192aa774b8
Copyright registration time
2026-07-06T09:09:06+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T18:39:05Z
Bitcoin block
957073
Canonical record hash
sha256:cc38b9c2cc51e338e513858e976b420f9e5430eca390b54f67ad3779bc562d8f

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.