Pièces de viole, Livre II No. 40: La polonaise

Recording identifiers

ISRC

FR50X1945311

Release date of the album this recording appears on

2020-04-10

CopyrightID (CopyrightChains transaction hash)

0x4a38c78bcdc8f96d95d963129aed49f9986aa57257c59452062f46ac45f641d9

Copyright registration time

2026-06-21T05:04:45+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:30:09Z

Bitcoin block

956302

Canonical record hash

sha256:2d5281c89f0910343ad59282131c12490016e43f4df96c5ae994b176d62785a8

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC FR50X1945311

What this proof establishes

This recording was released in 2020, 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.