ISRC NLA507708547
Verified recording
NLA507708547 is “Mazurka No. 49 in A Minor, Op. 68 No. 2” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xcf57114197d4b43f55a7c5983e70b1d5e7f9eb3e9ec22332731d72686fa70f79 and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507708547.
Recording identifiers
- ISRC
- NLA507708547
- Title
- Mazurka No. 49 in A Minor, Op. 68 No. 2
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xcf57114197d4b43f55a7c5983e70b1d5e7f9eb3e9ec22332731d72686fa70f79
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:9333157efee6b5445eb53b1abbd20e5a9c6c9a3f9727c8e74eda457ed22faffb- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507708547
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Mazurka No. 49 in A Minor, Op. 68 No. 2 · Machine-readable JSON-LD