4 Sketches, Op. 5, JB 1:67: No. 2, Melancholy. Allegretto

Recording identifiers

ISRC

CZA160900067

Release date of the album this recording appears on

2009-03-13

CopyrightID (CopyrightChains transaction hash)

0x3f56ff9d853b8734dfa1777941adc2885c8630960e1773efbb1aeb029b1d5a53

Copyright registration time

2026-06-04T16:35:37+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T12:47:07Z

Bitcoin block

953513

Canonical record hash

sha256:c6c063c305cddbf8de4127719ee935fe8004dd4bfbbc127e8133791dadd927d3

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC CZA160900067

What this proof establishes

This recording was released in 2009, 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.