Offenbach: Les Contes d'Hoffmann, Act I: "Va! pour Kleinzach" (Hoffmann, Nathanaël, Chorus)

Recording identifiers

ISRC

GBAYC2002713

Release date of the album this recording appears on

2021-09-24

CopyrightID (CopyrightChains transaction hash)

0x553eef4a5bc6010bb221e5912022401013c11ca13b207248615a01a6f78ea813

Copyright registration time

2026-07-06T07:03:27+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T16:54:37Z

Bitcoin block

957067

Canonical record hash

sha256:2af09017ddd130246a01944a23734729215b05afed0827e470f536c294563b8a

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC2002713

What this proof establishes

This recording was released in 2021, 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.