ISRC CALC42020151
Verified recording
CALC42020151 is “Piano concerto in A Minor, Op. 7: I. Allegro maestoso” by Clara Schumann,
registered on the CopyrightChains blockchain with CopyrightID
0x81c81fbd094bcea3c7a8726e9d5d9ea9f9e64c199aaf34e9941cc093615d04e4 and independently timestamped
in Bitcoin block 956304 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC42020151.
Recording identifiers
- ISRC
- CALC42020151
- Title
- Piano concerto in A Minor, Op. 7: I. Allegro maestoso
- Artist
- Clara Schumann
- CopyrightID (CopyrightChains transaction hash)
0x81c81fbd094bcea3c7a8726e9d5d9ea9f9e64c199aaf34e9941cc093615d04e4
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:c6fb87ffe11a8bb4dd4016a10c613af72c8bc54874d7bdcd06f292090e2fac3c- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC42020151
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Piano concerto in A Minor, Op. 7: I. Allegro maestoso · Machine-readable JSON-LD