ISRC USQX91900237
Verified recording
USQX91900237 is “Lob der Frauen, Polka Mazurka, Op. 315” by Johann Strauss II,
registered on the CopyrightChains blockchain with CopyrightID
0x4d1d6f43f152d2e52ce116d5ff68f470a2cd2f5a29f16e157af6bcea3c9639b6 and independently timestamped
in Bitcoin block 956302 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQX91900237.
Recording identifiers
- ISRC
- USQX91900237
- Title
- Lob der Frauen, Polka Mazurka, Op. 315
- Artist
- Johann Strauss II
- CopyrightID (CopyrightChains transaction hash)
0x4d1d6f43f152d2e52ce116d5ff68f470a2cd2f5a29f16e157af6bcea3c9639b6
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:ddcc59107b6c5082059c1d4addb54f01f3940e9ba7452b2291ef7c15983f879a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQX91900237
- Bitcoin block existence check
- https://blockstream.info/api/block/956302
Full record
Track page: Lob der Frauen, Polka Mazurka, Op. 315 · Machine-readable JSON-LD