ISRC CH6542437769
Verified recording
CH6542437769 is “4 Polonaises, Op. 1: II. in C Major” by Clara Schumann,
registered on the CopyrightChains blockchain with CopyrightID
0x6479c4a24d37754cd8d256aa9aecce3bf033b7472b6219a0f0c57bf919776917 and independently timestamped
in Bitcoin block 960429 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542437769.
Recording identifiers
- ISRC
- CH6542437769
- Title
- 4 Polonaises, Op. 1: II. in C Major
- Artist
- Clara Schumann
- CopyrightID (CopyrightChains transaction hash)
0x6479c4a24d37754cd8d256aa9aecce3bf033b7472b6219a0f0c57bf919776917
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T16:07:24+00:00
- Bitcoin block
- 960429
- Canonical record hash
sha256:2f460e4c75d6286e5757f653094695193df1eeea318c9735abd4e164cb9ed1cc- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542437769
- Bitcoin block existence check
- https://blockstream.info/api/block/960429
Full record
Track page: 4 Polonaises, Op. 1: II. in C Major · Machine-readable JSON-LD