ISRC DEF057230404
Verified recording
DEF057230404 is “Die lustige Witwe, Act I: No. 4, O Vaterland – Da geh' ich zu Maxim” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0x94ea7955cb0061dac8e54837ba5ea41ada8836c52646e3f52c4a3499092bcc1d and independently timestamped
in Bitcoin block 960144 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230404.
Recording identifiers
- ISRC
- DEF057230404
- Title
- Die lustige Witwe, Act I: No. 4, O Vaterland – Da geh' ich zu Maxim
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0x94ea7955cb0061dac8e54837ba5ea41ada8836c52646e3f52c4a3499092bcc1d
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T21:09:47+00:00
- Bitcoin block
- 960144
- Canonical record hash
sha256:bbe447f7f9a477b4d1ee2163da080c9659622003737296d697f530189ee831a7- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057230404
- Bitcoin block existence check
- https://blockstream.info/api/block/960144
Full record
Track page: Die lustige Witwe, Act I: No. 4, O Vaterland – Da geh' ich zu Maxim · Machine-readable JSON-LD