Polonaise-fantasie in A-Flat Major, Op. 61

Recording identifiers

ISRC

GBLLH1749403

Release date of the album this recording appears on

2018-01-12

CopyrightID (CopyrightChains transaction hash)

0x8342b0b35b056e4f0321a2c2eb359d051de1dd14d305a721ffbade4246342531

Copyright registration time

2026-06-24T10:04:13+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:451b4f95f1566462862b3a997b2f6867b713dd0e8717096a57076f8b6bcb37ca

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBLLH1749403

What this proof establishes

This recording was released in 2018, 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.