ISRC NLA508101909
Verified recording
NLA508101909 is “Waltz No. 9 in A Flat, Op. 69 No. 1 -"Farewell"” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x4393d30426b6081d11cd08921626a9b1a900e230d3b5a58d85f28a22b784bece and independently timestamped
in Bitcoin block 956302 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508101909.
Recording identifiers
- ISRC
- NLA508101909
- Title
- Waltz No. 9 in A Flat, Op. 69 No. 1 -"Farewell"
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x4393d30426b6081d11cd08921626a9b1a900e230d3b5a58d85f28a22b784bece
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:41169dedf2036b816ad6d2b0c16ede93a79afe715d19457228389876c29d3d2d- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508101909
- Bitcoin block existence check
- https://blockstream.info/api/block/956302
Full record
Track page: Waltz No. 9 in A Flat, Op. 69 No. 1 -"Farewell" · Machine-readable JSON-LD