ISRC QZFZ31934020
Verified recording
QZFZ31934020 is “Nostalgia” by Sefa M,
registered on the CopyrightChains blockchain with CopyrightID
0xf719b77bff6bbe5d38fa666c87a016964ca122aa2b48ea980660dedaf30f1981 and independently timestamped
in Bitcoin block 959123 on 2026-07-22.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ31934020.
Recording identifiers
- ISRC
- QZFZ31934020
- Title
- Nostalgia
- Artist
- Sefa M
- CopyrightID (CopyrightChains transaction hash)
0xf719b77bff6bbe5d38fa666c87a016964ca122aa2b48ea980660dedaf30f1981
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-22T11:35:32+00:00
- Bitcoin block
- 959123
- Canonical record hash
sha256:e289ca170f803d76a9dc997d80942e5900c7c63736f4ff104d5a97052dc2d535- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ31934020
- Bitcoin block existence check
- https://blockstream.info/api/block/959123