ISRC DEF056502030
Verified recording
DEF056502030 is “Polonaise in A-Flat Major, Op. 53 "Heroic": Maestoso” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x5a248c18563c185a602c505d1d881b54359edce8b24d0cd83e55fd848efe2483 and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056502030.
Recording identifiers
- ISRC
- DEF056502030
- Title
- Polonaise in A-Flat Major, Op. 53 "Heroic": Maestoso
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x5a248c18563c185a602c505d1d881b54359edce8b24d0cd83e55fd848efe2483
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:af866465e68e8e1b6a8ee0ccf3a08bb643c349e24c9c2fbd0e89b4bed86c38a5- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056502030
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Polonaise in A-Flat Major, Op. 53 "Heroic": Maestoso · Machine-readable JSON-LD