ISRC NOFCU8203070
Verified recording
NOFCU8203070 is “Kostervalsen” by Arve Opsahl,
registered on the CopyrightChains blockchain with CopyrightID
0xd06b610cc2f0b444a969c785fdef118f7dc26c77ba7510f99436796170122609 and independently timestamped
in Bitcoin block 957120 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFCU8203070.
Recording identifiers
- ISRC
- NOFCU8203070
- Title
- Kostervalsen
- Artist
- Arve Opsahl
- CopyrightID (CopyrightChains transaction hash)
0xd06b610cc2f0b444a969c785fdef118f7dc26c77ba7510f99436796170122609
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:22:41+00:00
- Bitcoin block
- 957120
- Canonical record hash
sha256:fbdac1730cb75351718f6a696eedba411fe2e86bc38fa7b8594674327585314f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFCU8203070
- Bitcoin block existence check
- https://blockstream.info/api/block/957120