ISRC DEF057230440
Verified recording
DEF057230440 is “Die lustige Witwe, Act III: No. 15, Lippen schweigen "Love Duet"” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0xc854b65ab22a39973872a40fa03f51758500f67c2c6cb28590f88e1a4b43568b and independently timestamped
in Bitcoin block 960138 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230440.
Recording identifiers
- ISRC
- DEF057230440
- Title
- Die lustige Witwe, Act III: No. 15, Lippen schweigen "Love Duet"
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0xc854b65ab22a39973872a40fa03f51758500f67c2c6cb28590f88e1a4b43568b
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T19:35:34+00:00
- Bitcoin block
- 960138
- Canonical record hash
sha256:ba9c611b7c172f8a255530851b08da56e3f92edf6e1064462ebd549a8c3e1ca7- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230440
- Bitcoin block existence check
- https://blockstream.info/api/block/960138
Full record
Track page: Die lustige Witwe, Act III: No. 15, Lippen schweigen "Love Duet" · Machine-readable JSON-LD