ISRC DEF066617220
Verified recording
DEF066617220 is “Die Zirkusprinzessin - operetta in 3 Acts: Wo ist der Himmel so blau wie in Wien” by Emmerich Kálmán,
registered on the CopyrightChains blockchain with CopyrightID
0x1a0bd2516f2702577e26e712d25cc103eebfea7bda8d5cdcde9afe2377f19573 and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066617220.
Recording identifiers
- ISRC
- DEF066617220
- Title
- Die Zirkusprinzessin - operetta in 3 Acts: Wo ist der Himmel so blau wie in Wien
- Artist
- Emmerich Kálmán
- CopyrightID (CopyrightChains transaction hash)
0x1a0bd2516f2702577e26e712d25cc103eebfea7bda8d5cdcde9afe2377f19573
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:abd80ab249047cfc1391eeabf1eac9343a93032732a914c14f4b31c00018a00c- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066617220
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Die Zirkusprinzessin - operetta in 3 Acts: Wo ist der Himmel so blau wie in Wien · Machine-readable JSON-LD