ISRC USRDG0222834
Verified recording
USRDG0222834 is “Grand Waltz from "Die Fledermaus"” by Eric Hammerstein,
registered on the CopyrightChains blockchain with CopyrightID
0x5aa67752fb0d512ee18f85e6c0c2e863e7916967dfd4c4a2b8378253c3f1f2f0 and independently timestamped
in Bitcoin block 960427 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRDG0222834.
Recording identifiers
- ISRC
- USRDG0222834
- Title
- Grand Waltz from "Die Fledermaus"
- Artist
- Eric Hammerstein
- CopyrightID (CopyrightChains transaction hash)
0x5aa67752fb0d512ee18f85e6c0c2e863e7916967dfd4c4a2b8378253c3f1f2f0
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T15:59:18+00:00
- Bitcoin block
- 960427
- Canonical record hash
sha256:1e49e512935d3ac368e8d872422aa3f9db5b19b23b66a9409985483a728afcae- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRDG0222834
- Bitcoin block existence check
- https://blockstream.info/api/block/960427
Full record
Track page: Grand Waltz from "Die Fledermaus" · Machine-readable JSON-LD