ISRC DEF057230438
Verified recording
DEF057230438 is “Die lustige Witwe, Act III: No. 14a, Reminiszenz: Tra la la la la...” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0xc761b91eb5ced9e90b80a8a5c7d55b1eae219e45754995c48308adb87a6eab36 and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230438.
Recording identifiers
- ISRC
- DEF057230438
- Title
- Die lustige Witwe, Act III: No. 14a, Reminiszenz: Tra la la la la...
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0xc761b91eb5ced9e90b80a8a5c7d55b1eae219e45754995c48308adb87a6eab36
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:a225c95ab51241aad17f697b8296e91c86a1b27c086fad5b77a77490085663d1- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230438
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Die lustige Witwe, Act III: No. 14a, Reminiszenz: Tra la la la la... · Machine-readable JSON-LD