ISRC NLA507400914
Verified recording
NLA507400914 is “12 Etudes, Op. 25: No. 11 in A Minor "Winter Wind"” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x622b3e4152fcb07ca95eca21fab6f49b30330c790b9a15626b301ee85d9257ee and independently timestamped
in Bitcoin block 957067 on 2026-07-07.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507400914.
Recording identifiers
- ISRC
- NLA507400914
- Title
- 12 Etudes, Op. 25: No. 11 in A Minor "Winter Wind"
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x622b3e4152fcb07ca95eca21fab6f49b30330c790b9a15626b301ee85d9257ee
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-07T16:54:37+00:00
- Bitcoin block
- 957067
- Canonical record hash
sha256:c6d8ee5ffcd8bd72d1f03b20f3add856e648205f1ca6d575b318b8c375e8bced- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507400914
- Bitcoin block existence check
- https://blockstream.info/api/block/957067
Full record
Track page: 12 Etudes, Op. 25: No. 11 in A Minor "Winter Wind" · Machine-readable JSON-LD