ISRC DEF057230409
Verified recording
DEF057230409 is “Die lustige Witwe, Act II: No. 11b-c, Duet & Romance. Wie eine Rosenknospe – Sieh dort den kleinen Pavillon” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0x22f225cb86c2b6b461443f91bc66666a756d6d4717cc0526b82a4963ed375b7c and independently timestamped
in Bitcoin block 960273 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230409.
Recording identifiers
- ISRC
- DEF057230409
- Title
- Die lustige Witwe, Act II: No. 11b-c, Duet & Romance. Wie eine Rosenknospe – Sieh dort den kleinen Pavillon
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0x22f225cb86c2b6b461443f91bc66666a756d6d4717cc0526b82a4963ed375b7c
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T15:42:38+00:00
- Bitcoin block
- 960273
- Canonical record hash
sha256:380f8f5c072d3011e77cf4b3d6f3cd2969c2d76b1313b6b8471d120d382b1642- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230409
- Bitcoin block existence check
- https://blockstream.info/api/block/960273
Full record
Track page: Die lustige Witwe, Act II: No. 11b-c, Duet & Romance. Wie eine Rosenknospe – Sieh dort den kleinen Pavillon · Machine-readable JSON-LD