Polonaise No. 6 in A-Flat Major, Op. 53 'Heroic'

Recording identifiers

ISRC

GBAYC9203779

Release date of the album this recording appears on

2017-02-17

CopyrightID (CopyrightChains transaction hash)

0xd9fab79f649bbe0cbb94611798bf662ea58cab2f047f396790c3ad913ecd55d1

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T20:09:33Z

Bitcoin block

960302

Canonical record hash

sha256:7fedadd3cc83444fe59cbcf3b3e3da94781957563fe264efc30bd18cddae550d

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC9203779

What this proof establishes

This recording was released in 2017, 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.