Fidelio, Op. 72 (Ed. Lühning & Didion), Act II: Melodrama. Wie kalt ist es in diesem unterirdischen Gewölbe... Duet. Nur hurtig fort, nur frisch gegraben

Recording identifiers

ISRC

GBBBA1045724

Release date of the album this recording appears on

2011-06-13

CopyrightID (CopyrightChains transaction hash)

0x20bcc94c511bddd5e9cdec3b4794bd116e42963b7b9a329e46a4ec0cca46b677

Copyright registration time

2026-06-24T11:00:14+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:2be9228db41221cc733dec3d9c47e0442ab0a9109deca403e800da675e79e301

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBBBA1045724

What this proof establishes

This recording was released in 2011, 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.