ISRC FRUM72300823
Verified recording
FRUM72300823 is “Waltz No. 19 in A Minor, KK IVb (Arr. for Cello and Piano by C. Thomas)” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xfd5939eff9efbd0d0f5cfe4edd459e004cc4b95e4b5a451263f299605ec7c409 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/FRUM72300823.
Recording identifiers
- ISRC
- FRUM72300823
- Title
- Waltz No. 19 in A Minor, KK IVb (Arr. for Cello and Piano by C. Thomas)
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xfd5939eff9efbd0d0f5cfe4edd459e004cc4b95e4b5a451263f299605ec7c409
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:391f8cfe5d0990ec039423bac338e3f6d6b680b4a29abc8c8bd23e2b813633f3- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72300823
- Bitcoin block existence check
- https://blockstream.info/api/block/956302
Full record
Track page: Waltz No. 19 in A Minor, KK IVb (Arr. for Cello and Piano by C. Thomas) · Machine-readable JSON-LD