ISRC USBC19900291
Verified recording
USBC19900291 is “Die Fledermaus: Act II: A waltz, let's have a waltz” by Johann Strauss II,
registered on the CopyrightChains blockchain with CopyrightID
0xd11a705f977550be3c41e9c0119d4e8d2a1bf4c78c2b612643a72fb5bb306b30 and independently timestamped
in Bitcoin block 960273 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19900291.
Recording identifiers
- ISRC
- USBC19900291
- Title
- Die Fledermaus: Act II: A waltz, let's have a waltz
- Artist
- Johann Strauss II
- CopyrightID (CopyrightChains transaction hash)
0xd11a705f977550be3c41e9c0119d4e8d2a1bf4c78c2b612643a72fb5bb306b30
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T15:42:38+00:00
- Bitcoin block
- 960273
- Canonical record hash
sha256:25bf7b3b32be923937bb2f76364d1c6a44d024bead6b91efe8fba22b84847b53- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19900291
- Bitcoin block existence check
- https://blockstream.info/api/block/960273
Full record
Track page: Die Fledermaus: Act II: A waltz, let's have a waltz · Machine-readable JSON-LD