ISRC DEF066810570
Verified recording
DEF066810570 is “The Merry Widow (Die lustige Witwe) / Act 2: Vilja-Lied” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0xe7affae36925812f91f9d91b273dbbc6d064c5bfc84ced4e050d40611dbebdfa and independently timestamped
in Bitcoin block 959159 on 2026-07-22.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066810570.
Recording identifiers
- ISRC
- DEF066810570
- Title
- The Merry Widow (Die lustige Witwe) / Act 2: Vilja-Lied
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0xe7affae36925812f91f9d91b273dbbc6d064c5bfc84ced4e050d40611dbebdfa
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-22T17:48:40+00:00
- Bitcoin block
- 959159
- Canonical record hash
sha256:537c95f5f172f0c88c2dd2cf98027b14a0af21e929bdcbef72098abe539de849- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066810570
- Bitcoin block existence check
- https://blockstream.info/api/block/959159
Full record
Track page: The Merry Widow (Die lustige Witwe) / Act 2: Vilja-Lied · Machine-readable JSON-LD