Hummel: Introduction, Theme and Variations for Oboe and Orchestra, Op. 102: Variation II

Recording identifiers

ISRC

FRZ201902042

CopyrightID (CopyrightChains transaction hash)

0x751b18477b6247cb31c112d285d25e8f4f35421646eb10cb237e4b98879486db

Copyright registration time

2026-07-30T19:14:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T19:26:00Z

Bitcoin block

960298

Canonical record hash

sha256:194a19a6950b8cfea5e241f96539566b0de3ba06ad7501534f98d4bcf0da0fcc

• Verify the CopyrightID on CopyrightChains
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What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.