ISRC DEF057230428
Verified recording
DEF057230428 is “Die lustige Witwe, Act II: No. 11a, Duet. Mein Freund, Vernunft!” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0x1f6608b706ab3d3599364fa52972ea0830a5b86d85f08d556e6e23261e51db74 and independently timestamped
in Bitcoin block 957124 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230428.
Recording identifiers
- ISRC
- DEF057230428
- Title
- Die lustige Witwe, Act II: No. 11a, Duet. Mein Freund, Vernunft!
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0x1f6608b706ab3d3599364fa52972ea0830a5b86d85f08d556e6e23261e51db74
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:53:27+00:00
- Bitcoin block
- 957124
- Canonical record hash
sha256:6e7132c66371458b228d67faee9432cfd6f709b1be23c9777d015f22f748d628- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230428
- Bitcoin block existence check
- https://blockstream.info/api/block/957124
Full record
Track page: Die lustige Witwe, Act II: No. 11a, Duet. Mein Freund, Vernunft! · Machine-readable JSON-LD