ISRC DEF066810560
Verified recording
DEF066810560 is “The Merry Widow (Die lustige Witwe) / Act 1: Ballsirenenwalzer” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0xf79d6f22a2c5089025869d50e50d3579ee8635a87231a8bb27d3ee8899d08dd1 and independently timestamped
in Bitcoin block 960229 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066810560.
Recording identifiers
- ISRC
- DEF066810560
- Title
- The Merry Widow (Die lustige Witwe) / Act 1: Ballsirenenwalzer
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0xf79d6f22a2c5089025869d50e50d3579ee8635a87231a8bb27d3ee8899d08dd1
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T08:30:10+00:00
- Bitcoin block
- 960229
- Canonical record hash
sha256:0ddfc1e2a89749ec8b6f9eb6c5e083bc99b615d02b5efcfa1997ce216386240f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066810560
- Bitcoin block existence check
- https://blockstream.info/api/block/960229
Full record
Track page: The Merry Widow (Die lustige Witwe) / Act 1: Ballsirenenwalzer · Machine-readable JSON-LD