Opera - Dobrawa Czocher & Hannes Kretzer Collaborative Rework

Recording identifiers

ISRC

DEG932101944

Release date of the album this recording appears on

2021-05-21

CopyrightID (CopyrightChains transaction hash)

0xf7a5d50d38b9593a4c5d1db1f05707af123661e4fa5d3c6799bb34db4119c2b4

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T11:07:37Z

Bitcoin block

960095

Canonical record hash

sha256:885c43bbb2341f4dd6ad61621001576cd5bd6cb52aa47a2aacff90a8e568feaf

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEG932101944

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.