ISRC NLA507510109
Verified recording
NLA507510109 is “Waltz No. 9 in A Flat, Op. 69 No. 1 -"Farewell"” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x14dd8316ebee957dfda8f46501682cf8156f7b3c7355c9db6b4e5ffdfa634c13 and independently timestamped
in Bitcoin block 960250 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507510109.
Recording identifiers
- ISRC
- NLA507510109
- Title
- Waltz No. 9 in A Flat, Op. 69 No. 1 -"Farewell"
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x14dd8316ebee957dfda8f46501682cf8156f7b3c7355c9db6b4e5ffdfa634c13
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T11:13:28+00:00
- Bitcoin block
- 960250
- Canonical record hash
sha256:75882309cba655cd17f7c13e541d9ef5778e482692a5fc9720961c0741f5308e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507510109
- Bitcoin block existence check
- https://blockstream.info/api/block/960250
Full record
Track page: Waltz No. 9 in A Flat, Op. 69 No. 1 -"Farewell" · Machine-readable JSON-LD