Polonaise in A-Flat Major, Op. 53 "Heroic" - Edit

Recording identifiers

ISRC

FRUM72201095

CopyrightID (CopyrightChains transaction hash)

0x3a93f38fa55441259035c3af28b58ef6599fa18cb9319ece8102cf9c5e19e06d

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T12:06:10Z

Bitcoin block

960254

Canonical record hash

sha256:cdb641d18f2ce5c2d84dfcb5fcd3ac4805e99038817deb0f021855a9355a1f93

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.