Polonaise in A Flat Major

Recording identifiers

ISRC

JPI700730406

Release date of the album this recording appears on

2017-11-01

CopyrightID (CopyrightChains transaction hash)

0xce145dbef5424df94a96d2384b4c3a6e272c9b66ad126d471f5341695097ab99

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-08-01T00:40:43Z

Bitcoin block

960489

Canonical record hash

sha256:7d657fb1ab92212f5ac6b2e65933aeea661989af31ae11451c328a4b2d24b99f

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC JPI700730406

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.