ISRC NLA507708509
Verified recording
NLA507708509 is “Mazurka No. 9 in C Op. 7 No. 5” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x3319682006d9baf7f18586d3a56f0efc4c096e57bb5ff7fbce599c9b31c41673 and independently timestamped
in Bitcoin block 960236 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507708509.
Recording identifiers
- ISRC
- NLA507708509
- Title
- Mazurka No. 9 in C Op. 7 No. 5
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x3319682006d9baf7f18586d3a56f0efc4c096e57bb5ff7fbce599c9b31c41673
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T09:37:10+00:00
- Bitcoin block
- 960236
- Canonical record hash
sha256:739ef4fb19b33915dffcbd8476c153d6da7c0c3fc4c6577bed83cba9571dd1c4- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507708509
- Bitcoin block existence check
- https://blockstream.info/api/block/960236
Full record
Track page: Mazurka No. 9 in C Op. 7 No. 5 · Machine-readable JSON-LD