ISRC GBF077742402
Verified recording
GBF077742402 is “The Merry Widow / Act 1: March from Introduction - Duet: A Highly Respectable Wife” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0x64c163d0736ce86dd8a0c76429ed78ec2c577cd30e3e5105f4147a654d8dbd88 and independently timestamped
in Bitcoin block 960207 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077742402.
Recording identifiers
- ISRC
- GBF077742402
- Title
- The Merry Widow / Act 1: March from Introduction - Duet: A Highly Respectable Wife
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0x64c163d0736ce86dd8a0c76429ed78ec2c577cd30e3e5105f4147a654d8dbd88
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T04:47:22+00:00
- Bitcoin block
- 960207
- Canonical record hash
sha256:6c8601ea81ac4e0202dea4ef75480272cf7d92ce2476bfc79665e82e89df79e4- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077742402
- Bitcoin block existence check
- https://blockstream.info/api/block/960207
Full record
Track page: The Merry Widow / Act 1: March from Introduction - Duet: A Highly Respectable Wife · Machine-readable JSON-LD