ISRC DEF057230412
Verified recording
DEF057230412 is “Die lustige Witwe, Act III: No. 15, Lippen schweigen "Love Duet"” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0x75dc9db6f68efbf03b3f8482efc8c33d7e685f5da384ed62caf0d3e4f3f67729 and independently timestamped
in Bitcoin block 960334 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230412.
Recording identifiers
- ISRC
- DEF057230412
- Title
- Die lustige Witwe, Act III: No. 15, Lippen schweigen "Love Duet"
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0x75dc9db6f68efbf03b3f8482efc8c33d7e685f5da384ed62caf0d3e4f3f67729
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T02:19:15+00:00
- Bitcoin block
- 960334
- Canonical record hash
sha256:d4cfd9bf6bd0d2490ff6ac6d13b3b4e8fba479800b5c9195702e86cae20cd072- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230412
- Bitcoin block existence check
- https://blockstream.info/api/block/960334
Full record
Track page: Die lustige Witwe, Act III: No. 15, Lippen schweigen "Love Duet" · Machine-readable JSON-LD