ISRC FR50X1845406
Verified recording
FR50X1845406 is “String Quartet No. 2 "Intimate Letters": II. Adagio - Vivace” by Leoš Janáček,
registered on the CopyrightChains blockchain with CopyrightID
0xb107eafe20b49133ea97d1cb46e14874546239a5870b444913fc46b3ae34a1f2 and independently timestamped
in Bitcoin block 960418 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1845406.
Recording identifiers
- ISRC
- FR50X1845406
- Title
- String Quartet No. 2 "Intimate Letters": II. Adagio - Vivace
- Artist
- Leoš Janáček
- CopyrightID (CopyrightChains transaction hash)
0xb107eafe20b49133ea97d1cb46e14874546239a5870b444913fc46b3ae34a1f2
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T15:20:15+00:00
- Bitcoin block
- 960418
- Canonical record hash
sha256:47c708d34f523b03871fe062c48fee81f3b0bd70d13ffb2b7dcb22e4347987b2- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1845406
- Bitcoin block existence check
- https://blockstream.info/api/block/960418
Full record
Track page: String Quartet No. 2 "Intimate Letters": II. Adagio - Vivace · Machine-readable JSON-LD