Duet for Cello and Oboe

Recording identifiers

ISRC

GBLGL1246746

CopyrightID (CopyrightChains transaction hash)

0xab9886710d8706231d9b9a55f6a814487ed29616e6fccb9d9405eb4c65a1a935

Copyright registration time

2026-07-07T06:49:32+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:660714d557136d80176a448d289fea1da8e016e97333764a8f22084b6e83ce4a

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.