ISRC DEF066810580
Verified recording
DEF066810580 is “The Merry Widow (Die lustige Witwe) / Act 2: Weibermarsch” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0x5c5c091bba8967ae24ef13589ce5cc2e45be276468ef0b44b54d25ffb443c7c5 and independently timestamped
in Bitcoin block 960117 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066810580.
Recording identifiers
- ISRC
- DEF066810580
- Title
- The Merry Widow (Die lustige Witwe) / Act 2: Weibermarsch
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0x5c5c091bba8967ae24ef13589ce5cc2e45be276468ef0b44b54d25ffb443c7c5
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T14:28:24+00:00
- Bitcoin block
- 960117
- Canonical record hash
sha256:161df187d449aa58152f4054e2993782728568cbc2aa252fdc8c7ce8b87dd78e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066810580
- Bitcoin block existence check
- https://blockstream.info/api/block/960117
Full record
Track page: The Merry Widow (Die lustige Witwe) / Act 2: Weibermarsch · Machine-readable JSON-LD