ISRC USIR10400937
Verified recording
USIR10400937 is “Heart Shaped Box - Demo” by Nirvana,
registered on the CopyrightChains blockchain with CopyrightID
0x64f2cf655744f09195aac41f38d67cc71a57ddb62c9fdb6e370d2b5cf576b852 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/USIR10400937.
Recording identifiers
- ISRC
- USIR10400937
- Title
- Heart Shaped Box - Demo
- Artist
- Nirvana
- CopyrightID (CopyrightChains transaction hash)
0x64f2cf655744f09195aac41f38d67cc71a57ddb62c9fdb6e370d2b5cf576b852
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:44fa09ca840f924faca59f783cddf6a5faa105e8893b8723ef5e1708d2dd3cc6- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USIR10400937
- Bitcoin block existence check
- https://blockstream.info/api/block/953520
Full record
Track page: Heart Shaped Box - Demo · Machine-readable JSON-LD