ISRC FRUM72300820
Verified recording
FRUM72300820 is “Nocturne in B Minor, Op. post., Lento con gran espressione (Arr. for Cello and Piano by M. Maisky)” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x4c44c345a8b9dbff7a6ab915fa4a93e07e3d075b94b48b4d7ea69e86ebdd2194 and independently timestamped
in Bitcoin block 956302 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72300820.
Recording identifiers
- ISRC
- FRUM72300820
- Title
- Nocturne in B Minor, Op. post., Lento con gran espressione (Arr. for Cello and Piano by M. Maisky)
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x4c44c345a8b9dbff7a6ab915fa4a93e07e3d075b94b48b4d7ea69e86ebdd2194
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:01557a28915aa73b080bd991f7f582452d86a7ea9735f10a776fcbb4ffc47e25- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72300820
- Bitcoin block existence check
- https://blockstream.info/api/block/956302
Full record
Track page: Nocturne in B Minor, Op. post., Lento con gran espressione (Arr. for Cello and Piano by M. Maisky) · Machine-readable JSON-LD