ISRC DEF059430309
Verified recording
DEF059430309 is “Die lustige Witwe / Act I: "Also Njegus, hier bin ich und wo ist das Vaterland?" - "O Vaterland"” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0x01b77ae3dd3f80515c4f20a5b4a6336763e6f3190e98499b07076f11750cf791 and independently timestamped
in Bitcoin block 956304 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059430309.
Recording identifiers
- ISRC
- DEF059430309
- Title
- Die lustige Witwe / Act I: "Also Njegus, hier bin ich und wo ist das Vaterland?" - "O Vaterland"
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0x01b77ae3dd3f80515c4f20a5b4a6336763e6f3190e98499b07076f11750cf791
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:f9a1e32ab2c3be09bbaa7220db78f04bd63b83cf11321df586cefe93bac99a29- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059430309
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Die lustige Witwe / Act I: "Also Njegus, hier bin ich und wo ist das Vaterland?" - "O Vaterland" · Machine-readable JSON-LD