ISRC USSM15500050
Verified recording
USSM15500050 is “The Threepenny Opera: Moritat von Mackie Messer (Mack the Knife)” by Kurt Weill,
registered on the CopyrightChains blockchain with CopyrightID
0x0fdbc652b2ae4c3af00fd37dd9b6c70d11cb73a04e85e0a9bbb091efa66a0721 and independently timestamped
in Bitcoin block 960448 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM15500050.
Recording identifiers
- ISRC
- USSM15500050
- Title
- The Threepenny Opera: Moritat von Mackie Messer (Mack the Knife)
- Artist
- Kurt Weill
- CopyrightID (CopyrightChains transaction hash)
0x0fdbc652b2ae4c3af00fd37dd9b6c70d11cb73a04e85e0a9bbb091efa66a0721
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T18:48:12+00:00
- Bitcoin block
- 960448
- Canonical record hash
sha256:6b602ffb8061ef1379921f14546db947e5171d8cfc67d1db50444cfd1a3f35f1- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM15500050
- Bitcoin block existence check
- https://blockstream.info/api/block/960448
Full record
Track page: The Threepenny Opera: Moritat von Mackie Messer (Mack the Knife) · Machine-readable JSON-LD