Sieben Lieder, Op. 2: II. Ist der Himmel darum im Lenz so blau

Recording identifiers

ISRC

DEN961904660

Release date of the album this recording appears on

2021-04-16

CopyrightID (CopyrightChains transaction hash)

0x36481b6b8b12f1517cd09286bf1816bbe102a6e0a7778862c00a4946d275d036

Copyright registration time

2026-07-07T19:04:51+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:53:27Z

Bitcoin block

957124

Canonical record hash

sha256:8d5608e433f40c6dee7c3e3dc2e06d1f729738805a66f4029e47bd63246f1523

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEN961904660

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.