ISRC FRZ148307020
Verified recording
FRZ148307020 is “Clarinet Quintet in A Major, K. 581: II. Larghetto” by Wolfgang Amadeus Mozart,
registered on the CopyrightChains blockchain with CopyrightID
0xaecc1e416a385aa111b8ace0f43c4f8b3ce21844cecf6998a24a4f0e7ffd3b07 and independently timestamped
in Bitcoin block 960236 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ148307020.
Recording identifiers
- ISRC
- FRZ148307020
- Title
- Clarinet Quintet in A Major, K. 581: II. Larghetto
- Artist
- Wolfgang Amadeus Mozart
- CopyrightID (CopyrightChains transaction hash)
0xaecc1e416a385aa111b8ace0f43c4f8b3ce21844cecf6998a24a4f0e7ffd3b07
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T09:37:10+00:00
- Bitcoin block
- 960236
- Canonical record hash
sha256:c54b3711b0af61cd878515c1551c2d16c9d82772bc9335831bb482073604747e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ148307020
- Bitcoin block existence check
- https://blockstream.info/api/block/960236
Full record
Track page: Clarinet Quintet in A Major, K. 581: II. Larghetto · Machine-readable JSON-LD