ISRC USUM71514607
Verified recording
USUM71514607 is “Retreat” by Kurt Cobain,
registered on the CopyrightChains blockchain with CopyrightID
0x0c4e3e5e319d43790236e2530293ba2ff0380a531084b77bed1c0f3f95f8989d 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/USUM71514607.
Recording identifiers
- ISRC
- USUM71514607
- Title
- Retreat
- Artist
- Kurt Cobain
- CopyrightID (CopyrightChains transaction hash)
0x0c4e3e5e319d43790236e2530293ba2ff0380a531084b77bed1c0f3f95f8989d
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:d6f53f341ba68e0edae14d86b90af0621702640c9a1356ba553b9733a5ed574c- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71514607
- Bitcoin block existence check
- https://blockstream.info/api/block/953520