ISRC DEF066810530
Verified recording
DEF066810530 is “The Merry Widow (Die lustige Witwe) / Act 1: Gar oft hab' ich gehört” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0xd29270b8f443e78a9cfb09189b344909d6f7386c8654a6318946fd973d3ce2dd 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/DEF066810530.
Recording identifiers
- ISRC
- DEF066810530
- Title
- The Merry Widow (Die lustige Witwe) / Act 1: Gar oft hab' ich gehört
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0xd29270b8f443e78a9cfb09189b344909d6f7386c8654a6318946fd973d3ce2dd
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T08:30:10+00:00
- Bitcoin block
- 960229
- Canonical record hash
sha256:d37ca494457bdf528071217d805eaa2f483a9bbbbf2756eaece28757aac1aa17- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066810530
- Bitcoin block existence check
- https://blockstream.info/api/block/960229
Full record
Track page: The Merry Widow (Die lustige Witwe) / Act 1: Gar oft hab' ich gehört · Machine-readable JSON-LD