Wozzeck, Op. 7, Act II: Guten tag, Franz

Recording identifiers

ISRC

DEU921897408

Release date of the album this recording appears on

2018-08-24

CopyrightID (CopyrightChains transaction hash)

0x4b837b077340446c96319ba7611997b6f56dbf022b7468fdd53e5b0a9f745f2a

Copyright registration time

2026-07-31T23:22:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T23:51:35Z

Bitcoin block

960481

Canonical record hash

sha256:96fdd179ef43382497ea2bf6c020cd30bc16ea40224edb9f95ef167e17e40cc6

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEU921897408

What this proof establishes

This recording was released in 2018, 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.