ISRC DEF066810770
Verified recording
DEF066810770 is “Gräfin Mariza - Operetta in 3 Acts: Sag' ja, mein Lieb', sag' ja” by Emmerich Kálmán,
registered on the CopyrightChains blockchain with CopyrightID
0xd2d3dc886c64c33082a2e351fb92f3741d5e9c00bb51618a2ac8230acfecbbad 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/DEF066810770.
Recording identifiers
- ISRC
- DEF066810770
- Title
- Gräfin Mariza - Operetta in 3 Acts: Sag' ja, mein Lieb', sag' ja
- Artist
- Emmerich Kálmán
- CopyrightID (CopyrightChains transaction hash)
0xd2d3dc886c64c33082a2e351fb92f3741d5e9c00bb51618a2ac8230acfecbbad
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:ad595f4588adcd7091267e7e30c8d64db77aa8f34e5a89294511709b7b93decb- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066810770
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Gräfin Mariza - Operetta in 3 Acts: Sag' ja, mein Lieb', sag' ja · Machine-readable JSON-LD