Lob der Frauen, Polka Mazurka, Op. 315

Recording identifiers

ISRC

USQX91900237

Release date of the album this recording appears on

2019-02-01

CopyrightID (CopyrightChains transaction hash)

0x4d1d6f43f152d2e52ce116d5ff68f470a2cd2f5a29f16e157af6bcea3c9639b6

Copyright registration time

2026-06-21T21:05:22+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:30:09Z

Bitcoin block

956302

Canonical record hash

sha256:ddcc59107b6c5082059c1d4addb54f01f3940e9ba7452b2291ef7c15983f879a

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USQX91900237

What this proof establishes

This recording was released in 2019, 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.