ISRC GBF077742414
Verified recording
GBF077742414 is “The Merry Widow / Act 2: Duet: Love unspoken, love unbroken” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0x77d320b7da5522a275c4cb02c1005c34f34202b8d9f395b0bd5f54ea31f74739 and independently timestamped
in Bitcoin block 960144 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077742414.
Recording identifiers
- ISRC
- GBF077742414
- Title
- The Merry Widow / Act 2: Duet: Love unspoken, love unbroken
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0x77d320b7da5522a275c4cb02c1005c34f34202b8d9f395b0bd5f54ea31f74739
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T21:09:47+00:00
- Bitcoin block
- 960144
- Canonical record hash
sha256:f66320642e8045cbcb2388bc289b02b288c0ea42fa67c690993a7a059631e184- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077742414
- Bitcoin block existence check
- https://blockstream.info/api/block/960144
Full record
Track page: The Merry Widow / Act 2: Duet: Love unspoken, love unbroken · Machine-readable JSON-LD