ISRC USL4Q2068948
Verified recording
USL4Q2068948 is “Valses, Op. 64: No. 2, Tempo Giusto (Arr. for Guitar)” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xe498182bb21ed242ba0d7fc3b6906c7059b78319fe2dc77df09653e678832e16 and independently timestamped
in Bitcoin block 956889 on 2026-07-06.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2068948.
Recording identifiers
- ISRC
- USL4Q2068948
- Title
- Valses, Op. 64: No. 2, Tempo Giusto (Arr. for Guitar)
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xe498182bb21ed242ba0d7fc3b6906c7059b78319fe2dc77df09653e678832e16
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-06T06:56:49+00:00
- Bitcoin block
- 956889
- Canonical record hash
sha256:057254656c6c6d68f7b8dbcee6d9eebb64fd3e0100b14be0f5eec0ed513cbe87- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2068948
- Bitcoin block existence check
- https://blockstream.info/api/block/956889
Full record
Track page: Valses, Op. 64: No. 2, Tempo Giusto (Arr. for Guitar) · Machine-readable JSON-LD