12 Etudes, Op. 8: No. 3 in B Minor

Recording identifiers

ISRC

DEAD62210604

CopyrightID (CopyrightChains transaction hash)

0x36e43ef0fe0807db2d6cd56a3521cad5751868e805a138ff6f81d18c3d839c89

Copyright registration time

2026-07-07T12:31:52+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:38099fbba18bf52fedf3d7e006c2ee37bc7aa92d7b7e8430b887c212ee081ede

• 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.