ISRC USRDG0310283
Verified recording
USRDG0310283 is “Valzer di "La vedova allegra"” by Eric Hammerstein,
registered on the CopyrightChains blockchain with CopyrightID
0xc842146cd06c0641e29a58cb78fa3dba99a3cd386aec749f56aa7f9d50dac0d7 and independently timestamped
in Bitcoin block 960264 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRDG0310283.
Recording identifiers
- ISRC
- USRDG0310283
- Title
- Valzer di "La vedova allegra"
- Artist
- Eric Hammerstein
- CopyrightID (CopyrightChains transaction hash)
0xc842146cd06c0641e29a58cb78fa3dba99a3cd386aec749f56aa7f9d50dac0d7
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T14:36:16+00:00
- Bitcoin block
- 960264
- Canonical record hash
sha256:0b930f41afc2807151d3982330f159d9b85d4052c555cb897d27c24049c7cd8e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRDG0310283
- Bitcoin block existence check
- https://blockstream.info/api/block/960264
Full record
Track page: Valzer di "La vedova allegra" · Machine-readable JSON-LD