ISRC GBJ2F1010753
Verified recording
GBJ2F1010753 is “The Merry Widow: Act II, "Mein Freund, Vernunft!"” by Franz Lehár,
registered on the CopyrightChains blockchain with CopyrightID
0xc3689fb424f0343bd88f474f827b42b8fe4d241670295c1feb83e97f93432eb3 and independently timestamped
in Bitcoin block 960185 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJ2F1010753.
Recording identifiers
- ISRC
- GBJ2F1010753
- Title
- The Merry Widow: Act II, "Mein Freund, Vernunft!"
- Artist
- Franz Lehár
- CopyrightID (CopyrightChains transaction hash)
0xc3689fb424f0343bd88f474f827b42b8fe4d241670295c1feb83e97f93432eb3
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T01:32:48+00:00
- Bitcoin block
- 960185
- Canonical record hash
sha256:5cb94d3b0f3382a6c42909c6db4780b3396f4eaf9c56ec774bf44434eeb26f0f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJ2F1010753
- Bitcoin block existence check
- https://blockstream.info/api/block/960185
Full record
Track page: The Merry Widow: Act II, "Mein Freund, Vernunft!" · Machine-readable JSON-LD