ISRC FRZ200003801
Verified recording
FRZ200003801 is “Rachmaninov: 10 Preludes, Op. 23: No. 1 in F-Sharp Minor” by Sergei Rachmaninoff,
registered on the CopyrightChains blockchain with CopyrightID
0xb494e833fcd40d72fc2fb71a3cfb0de458f39b65b78078b2d3ae7b5f481c0778 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/FRZ200003801.
Recording identifiers
- ISRC
- FRZ200003801
- Title
- Rachmaninov: 10 Preludes, Op. 23: No. 1 in F-Sharp Minor
- Artist
- Sergei Rachmaninoff
- CopyrightID (CopyrightChains transaction hash)
0xb494e833fcd40d72fc2fb71a3cfb0de458f39b65b78078b2d3ae7b5f481c0778
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:2c7be71fe2d1f969383668c7ebefbf3b87d091e594b19ae6414031fd062e79b0- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ200003801
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Rachmaninov: 10 Preludes, Op. 23: No. 1 in F-Sharp Minor · Machine-readable JSON-LD