ISRC CALC41501075
Verified recording
CALC41501075 is “Polonaise-fantaisie in A-Flat Major, Op. 61” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xbba583ba21f851b932c5c17c3c695d7ea193279e7da0977f1abc11bef87fc8c7 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/CALC41501075.
Recording identifiers
- ISRC
- CALC41501075
- Title
- Polonaise-fantaisie in A-Flat Major, Op. 61
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xbba583ba21f851b932c5c17c3c695d7ea193279e7da0977f1abc11bef87fc8c7
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:bb7f963bcb06ec04cba952e39dbec870c28b52cc90eab77f9b9e62d04f9289f0- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC41501075
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Polonaise-fantaisie in A-Flat Major, Op. 61 · Machine-readable JSON-LD