ISRC CALC42021120
Verified recording
CALC42021120 is “24 Préludes, Op. 28, No. 20 in C Minor - Largo” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xcc317a09c09c482abcae64bab8ea45810da21133cad4753ef5c6cef7a6bb61aa and independently timestamped
in Bitcoin block 957120 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC42021120.
Recording identifiers
- ISRC
- CALC42021120
- Title
- 24 Préludes, Op. 28, No. 20 in C Minor - Largo
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xcc317a09c09c482abcae64bab8ea45810da21133cad4753ef5c6cef7a6bb61aa
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:22:41+00:00
- Bitcoin block
- 957120
- Canonical record hash
sha256:ae81f36d969d86ea5a1d27439c74029b14370ccaf06f92b7b71b86bc94b6e5df- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC42021120
- Bitcoin block existence check
- https://blockstream.info/api/block/957120
Full record
Track page: 24 Préludes, Op. 28, No. 20 in C Minor - Largo · Machine-readable JSON-LD