Offenbach: Les contes d'Hoffmann, Prologue: "Il était une fois à la cour d'Eisenach" (Hoffmann, Nathanaël, Chœur)

Recording identifiers

ISRC

GBAYC0501604

Release date of the album this recording appears on

2006-02-06

CopyrightID (CopyrightChains transaction hash)

0x4645f0182dd72fb01c0b1e8e70ce9d924d38a0164181d50c4896e289484b67a8

Copyright registration time

2026-07-30T18:03:16+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T18:23:33Z

Bitcoin block

960291

Canonical record hash

sha256:15777cd2f9a091fb39d67755720499f1425ee5de019a502efaebfc95507e7145

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC0501604

What this proof establishes

This recording was released in 2006, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.