ISRC FR50X1845401
Verified recording
FR50X1845401 is “String Quartet No. 1 "Kreutzer Sonata": I. Adagio con moto” by Leoš Janáček,
registered on the CopyrightChains blockchain with CopyrightID
0xc25e1d41e75d739bf9edfa2410ab04449a4fb6f6f4f2877c4b57ade347fa9c4c and independently timestamped
in Bitcoin block 960441 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1845401.
Recording identifiers
- ISRC
- FR50X1845401
- Title
- String Quartet No. 1 "Kreutzer Sonata": I. Adagio con moto
- Artist
- Leoš Janáček
- CopyrightID (CopyrightChains transaction hash)
0xc25e1d41e75d739bf9edfa2410ab04449a4fb6f6f4f2877c4b57ade347fa9c4c
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T17:29:52+00:00
- Bitcoin block
- 960441
- Canonical record hash
sha256:9c4b5803eb0928d718bc65b7bcbdcc92c89c7108f79f9af6d7f44b24a7eebdd9- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1845401
- Bitcoin block existence check
- https://blockstream.info/api/block/960441
Full record
Track page: String Quartet No. 1 "Kreutzer Sonata": I. Adagio con moto · Machine-readable JSON-LD