ISRC USIR10400861
Verified recording
USIR10400861 is “Mrs. Butterworth - 1988 Rehearsal” by Nirvana,
registered on the CopyrightChains blockchain with CopyrightID
0x89ad718090bb91f55ea537edead07dda6f4412ba8de6cd1ad5ce3097c7b39fc9 and independently timestamped
in Bitcoin block 953515 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USIR10400861.
Recording identifiers
- ISRC
- USIR10400861
- Title
- Mrs. Butterworth - 1988 Rehearsal
- Artist
- Nirvana
- CopyrightID (CopyrightChains transaction hash)
0x89ad718090bb91f55ea537edead07dda6f4412ba8de6cd1ad5ce3097c7b39fc9
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:53:06+00:00
- Bitcoin block
- 953515
- Canonical record hash
sha256:00e95751caf86f77fbcc8d1320ef655f6692d2f3000aa9baf60eba128e9eb3a1- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USIR10400861
- Bitcoin block existence check
- https://blockstream.info/api/block/953515
Full record
Track page: Mrs. Butterworth - 1988 Rehearsal · Machine-readable JSON-LD