Mazurka No. 5 in B-Flat Major, Op. 7 No. 1: Vivace

Recording identifiers

ISRC

DEF056500650

Release date of the album this recording appears on

2000-01-01

CopyrightID (CopyrightChains transaction hash)

0x1f56014d807dbd86e8ec674eb24fa06c6acebaeac4a2fb70ebe2c073c04d72fa

Copyright registration time

2026-07-30T09:38:15+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T09:57:33Z

Bitcoin block

960240

Canonical record hash

sha256:4b6357540aab72396d80a761b62e94fbc810295143bcaec6967a1be86db7d32b

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF056500650

What this proof establishes

This recording was released in 2000, 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.