ISRC GBF077742408
Verified recording
GBF077742408 is “The Merry Widow / Act 2: Duet: Such a silly soldier boy...Heija!” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0xac7d648c7c54b1db5bd29b026880d24a1533a1fba74d084e5bad51d2c4595d98 and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077742408.
Recording identifiers
- ISRC
- GBF077742408
- Title
- The Merry Widow / Act 2: Duet: Such a silly soldier boy...Heija!
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0xac7d648c7c54b1db5bd29b026880d24a1533a1fba74d084e5bad51d2c4595d98
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:6f6d6ead2ae18719c89e4c13d04e3b0c7baf22a422b1c3c9e48db3204674b61b- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077742408
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: The Merry Widow / Act 2: Duet: Such a silly soldier boy...Heija! · Machine-readable JSON-LD