ISRC DEF057230421
Verified recording
DEF057230421 is “Die lustige Witwe, Act II: No. 7a, Introduction – Dance – Ich bitte, hier jetzt zu verweilen – Mi velimo dase” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0x9a4e84cc5feaba87620095d48143345ad98e0e5e2e6b0eec93bf0dd36dd2cd6f and independently timestamped
in Bitcoin block 960220 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230421.
Recording identifiers
- ISRC
- DEF057230421
- Title
- Die lustige Witwe, Act II: No. 7a, Introduction – Dance – Ich bitte, hier jetzt zu verweilen – Mi velimo dase
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0x9a4e84cc5feaba87620095d48143345ad98e0e5e2e6b0eec93bf0dd36dd2cd6f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T07:28:30+00:00
- Bitcoin block
- 960220
- Canonical record hash
sha256:6a98d6d697a2cf7f15fa474449eefa4a00e10b028b1e61435214a23abf655efd- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230421
- Bitcoin block existence check
- https://blockstream.info/api/block/960220
Full record
Track page: Die lustige Witwe, Act II: No. 7a, Introduction – Dance – Ich bitte, hier jetzt zu verweilen – Mi velimo dase · Machine-readable JSON-LD