Les Contes d'Hoffmann / Act 4: Entr'acte (Barcarolle)

Recording identifiers

ISRC

DEN960130908

Release date of the album this recording appears on

2013-01-01

CopyrightID (CopyrightChains transaction hash)

0x7db9c36f66ea945b07719ea74a6406f0f68a9de354b22d066675487e7ef6a7ee

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T22:27:44Z

Bitcoin block

960473

Canonical record hash

sha256:9f9b5b52945265b2e03960cdd94c314e930535c73595b7eb6930f0aa731f2962

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEN960130908

What this proof establishes

This recording was released in 2013, 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.