Les Contes d'Hoffmann / Act 1: Voici les valseurs!

Recording identifiers

ISRC

GBF077240016

Release date of the album this recording appears on

1972-01-01

CopyrightID (CopyrightChains transaction hash)

0xd98ba0695783dfcf0fe2e37a90bc8d703b6679f05a00dfd1ec17d848806b2329

Copyright registration time

2026-07-06T06:49:06+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-06T06:56:49Z

Bitcoin block

956889

Canonical record hash

sha256:00f5fba0e48ecc3252424621eab2e1ebba9b63f1d974e2f09af8570dc6775993

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF077240016

What this proof establishes

This recording was released in 1972, 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.