ISRC NLA507708522
Verified recording
NLA507708522 is “Mazurka No. 22 in G sharp minor Op. 33 No. 1” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x81dd74310f2501982672b58debc0d8b494b66c827c97a854d6c0b9bad310000f and independently timestamped
in Bitcoin block 960153 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507708522.
Recording identifiers
- ISRC
- NLA507708522
- Title
- Mazurka No. 22 in G sharp minor Op. 33 No. 1
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x81dd74310f2501982672b58debc0d8b494b66c827c97a854d6c0b9bad310000f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T21:57:12+00:00
- Bitcoin block
- 960153
- Canonical record hash
sha256:6a0083629fd5e2fe44e16e23a6385f7f4ca9b511caae1599ac0fe9f3968a0dad- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507708522
- Bitcoin block existence check
- https://blockstream.info/api/block/960153
Full record
Track page: Mazurka No. 22 in G sharp minor Op. 33 No. 1 · Machine-readable JSON-LD