ISRC DEF057230401
Verified recording
DEF057230401 is “Die lustige Witwe, Act I: No. 1, Introduction – Verehrteste Damen und Herren” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0x8c5b61ac473e0691c3e3f61b6cea7863c7dc05b04d414dde4a8afd2c0a0a402c and independently timestamped
in Bitcoin block 956304 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230401.
Recording identifiers
- ISRC
- DEF057230401
- Title
- Die lustige Witwe, Act I: No. 1, Introduction – Verehrteste Damen und Herren
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0x8c5b61ac473e0691c3e3f61b6cea7863c7dc05b04d414dde4a8afd2c0a0a402c
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:f6f109376e81cb88522dc3e59cf2a813e33a599068edbb279af638bea5763999- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230401
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Die lustige Witwe, Act I: No. 1, Introduction – Verehrteste Damen und Herren · Machine-readable JSON-LD