ISRC CZA161800907
Verified recording
CZA161800907 is “12 Duos for 2 French Horns, K. 487: No. 4, Polonaise - Arr. for Horn and Chamber Orchestra” by Wolfgang Amadeus Mozart,
registered on the CopyrightChains blockchain with CopyrightID
0xd0267865b76146f73cb1c48de2ae20778ed9aa54d1cbe11355d4407c3ba8fc3a and independently timestamped
in Bitcoin block 960354 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA161800907.
Recording identifiers
- ISRC
- CZA161800907
- Title
- 12 Duos for 2 French Horns, K. 487: No. 4, Polonaise - Arr. for Horn and Chamber Orchestra
- Artist
- Wolfgang Amadeus Mozart
- CopyrightID (CopyrightChains transaction hash)
0xd0267865b76146f73cb1c48de2ae20778ed9aa54d1cbe11355d4407c3ba8fc3a
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T05:48:18+00:00
- Bitcoin block
- 960354
- Canonical record hash
sha256:1549e101122a09eb9c4a95a45a0e86ca0471ba1a766b22e4da0b07e341eed38f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA161800907
- Bitcoin block existence check
- https://blockstream.info/api/block/960354
Full record
Track page: 12 Duos for 2 French Horns, K. 487: No. 4, Polonaise - Arr. for Horn and Chamber Orchestra · Machine-readable JSON-LD