Mazurka No. 30 in G Major, Op. 50 No. 1. Vivace

Recording identifiers

ISRC

GBF077940406

Release date of the album this recording appears on

2025-05-09

CopyrightID (CopyrightChains transaction hash)

0x89c7628abdabdcb82c73a58c1aa36f6862a1a03e5847be2e114cd04bf7e3b667

Copyright registration time

2026-06-21T17:36:31+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:30:09Z

Bitcoin block

956302

Canonical record hash

sha256:8e16e3036b5f6b9b8f5fd3f99d10425ab8e193930120436834ea6a4065eb6562

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF077940406

What this proof establishes

This recording was released in 2025. ProofProfile's artist catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and this recording entered the record through cc-db-prod's ISRC-linked registration. Its provenance rests on the dates stated above rather than on the era of that source corpus.

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.