ISRC FRZ148906100
Verified recording
FRZ148906100 is “Symphony No. 21 in A Major, K. 134: IV. Allegro” by Wolfgang Amadeus Mozart,
registered on the CopyrightChains blockchain with CopyrightID
0x1764ae0e9d21206ad317a911ec521933e860de346378b94f1bc543d88ce84144 and independently timestamped
in Bitcoin block 960370 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ148906100.
Recording identifiers
- ISRC
- FRZ148906100
- Title
- Symphony No. 21 in A Major, K. 134: IV. Allegro
- Artist
- Wolfgang Amadeus Mozart
- CopyrightID (CopyrightChains transaction hash)
0x1764ae0e9d21206ad317a911ec521933e860de346378b94f1bc543d88ce84144
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T08:38:45+00:00
- Bitcoin block
- 960370
- Canonical record hash
sha256:eaebaeb5d83d304ad6f48d3dff104878349740c95141f7ef04aa569f4d1e59ca- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ148906100
- Bitcoin block existence check
- https://blockstream.info/api/block/960370
Full record
Track page: Symphony No. 21 in A Major, K. 134: IV. Allegro · Machine-readable JSON-LD