ISRC FRZ148901110
Verified recording
FRZ148901110 is “Six four-handed pieces, Op. 11: IV. Valse” by Sergei Rachmaninoff,
registered on the CopyrightChains blockchain with CopyrightID
0xd074f24ff923353883375f620ea013e2b76712ec7392f31fb658b03251f8db81 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/FRZ148901110.
Recording identifiers
- ISRC
- FRZ148901110
- Title
- Six four-handed pieces, Op. 11: IV. Valse
- Artist
- Sergei Rachmaninoff
- CopyrightID (CopyrightChains transaction hash)
0xd074f24ff923353883375f620ea013e2b76712ec7392f31fb658b03251f8db81
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:c614861db4036f071e2470b57bb76dadaea9b0b0bbc3285369f1359a3725edd4- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ148901110
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Six four-handed pieces, Op. 11: IV. Valse · Machine-readable JSON-LD