ISRC CALC42021111
Verified recording
CALC42021111 is “24 Préludes, Op. 28, No. 11 in B Major - Vivace” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x6b4ad5d5ab213107f8829f7221147dee406af1937fdc91f69e2ead9ad2615116 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/CALC42021111.
Recording identifiers
- ISRC
- CALC42021111
- Title
- 24 Préludes, Op. 28, No. 11 in B Major - Vivace
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x6b4ad5d5ab213107f8829f7221147dee406af1937fdc91f69e2ead9ad2615116
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:6d4fb0066b6e8f6f47106772bfb2d03db1162d0d3777bdcd1f670797eaa36481- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC42021111
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: 24 Préludes, Op. 28, No. 11 in B Major - Vivace · Machine-readable JSON-LD