ISRC FRZ149815050
Verified recording
FRZ149815050 is “Così fan tutte, K. 588: Act 2: Recitativo "In Qual Fiero Contrasto"” by Wolfgang Amadeus Mozart,
registered on the CopyrightChains blockchain with CopyrightID
0x4951a7e2e79b422d6295ae064a756f4ec44c7dba0f20d0b4805b2814e701cd02 and independently timestamped
in Bitcoin block 960348 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ149815050.
Recording identifiers
- ISRC
- FRZ149815050
- Title
- Così fan tutte, K. 588: Act 2: Recitativo "In Qual Fiero Contrasto"
- Artist
- Wolfgang Amadeus Mozart
- CopyrightID (CopyrightChains transaction hash)
0x4951a7e2e79b422d6295ae064a756f4ec44c7dba0f20d0b4805b2814e701cd02
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T05:17:02+00:00
- Bitcoin block
- 960348
- Canonical record hash
sha256:5c60a41eb2f4301fc9b873c0677dda48d052b7593651d4c4dc28335ce0d6abec- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ149815050
- Bitcoin block existence check
- https://blockstream.info/api/block/960348
Full record
Track page: Così fan tutte, K. 588: Act 2: Recitativo "In Qual Fiero Contrasto" · Machine-readable JSON-LD