ISRC GBF077742403
Verified recording
GBF077742403 is “The Merry Widow / Act 1: Anna's Entrance: Gentlemen, no more” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0x6376a9accbc63cafdb15990985112a71c42d28e479057bdade42ff99f14d01c5 and independently timestamped
in Bitcoin block 960240 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077742403.
Recording identifiers
- ISRC
- GBF077742403
- Title
- The Merry Widow / Act 1: Anna's Entrance: Gentlemen, no more
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0x6376a9accbc63cafdb15990985112a71c42d28e479057bdade42ff99f14d01c5
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T09:57:33+00:00
- Bitcoin block
- 960240
- Canonical record hash
sha256:0f415674dadef6af54e2f115b4544575cb9965abc8c5f4c4313b686930dfebb4- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077742403
- Bitcoin block existence check
- https://blockstream.info/api/block/960240
Full record
Track page: The Merry Widow / Act 1: Anna's Entrance: Gentlemen, no more · Machine-readable JSON-LD