ISRC USUG10500529
Verified recording
USUG10500529 is “Sappy - 1990 Studio Demo” by Nirvana,
registered on the CopyrightChains blockchain with CopyrightID
0xb558d29ac9e600c3191193cfd0c66410001fdb09dc2407e09750e8db486f6cf0 and independently timestamped
in Bitcoin block 953520 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUG10500529.
Recording identifiers
- ISRC
- USUG10500529
- Title
- Sappy - 1990 Studio Demo
- Artist
- Nirvana
- CopyrightID (CopyrightChains transaction hash)
0xb558d29ac9e600c3191193cfd0c66410001fdb09dc2407e09750e8db486f6cf0
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:c00f694cbe35e52517db966e5c4189fe4c60c7b4e3bbfec4156a17473708f758- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUG10500529
- Bitcoin block existence check
- https://blockstream.info/api/block/953520
Full record
Track page: Sappy - 1990 Studio Demo · Machine-readable JSON-LD