ISRC DEF059503540
Verified recording
DEF059503540 is “Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x50c219fec8d9e5a9fb8d3071b3e2c6c440928b322fcdfaca830e1f3048617456 and independently timestamped
in Bitcoin block 960314 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059503540.
Recording identifiers
- ISRC
- DEF059503540
- Title
- Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x50c219fec8d9e5a9fb8d3071b3e2c6c440928b322fcdfaca830e1f3048617456
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T21:00:46+00:00
- Bitcoin block
- 960314
- Canonical record hash
sha256:306611f506cc042fa9f9ccbd41414cabd5f74d9a909ad236bf8e096cca759f6e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059503540
- Bitcoin block existence check
- https://blockstream.info/api/block/960314
Full record
Track page: Nocturne No. 1 in B-Flat Minor, Op. 9 No. 1 · Machine-readable JSON-LD