ISRC DEF059503600
Verified recording
DEF059503600 is “Nocturne No. 7 in C-Sharp Minor, Op. 27, No. 1” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xc4942b89e8e7e2ac312130ba681988fd02c99b4e9fdbabffdb60c88d86b7c2fa and independently timestamped
in Bitcoin block 960397 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059503600.
Recording identifiers
- ISRC
- DEF059503600
- Title
- Nocturne No. 7 in C-Sharp Minor, Op. 27, No. 1
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xc4942b89e8e7e2ac312130ba681988fd02c99b4e9fdbabffdb60c88d86b7c2fa
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T12:24:41+00:00
- Bitcoin block
- 960397
- Canonical record hash
sha256:ceb232046a5dbf873ff4dedd1cba3780bf48965c62c7d7c8a90cf63634cfdf7c- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059503600
- Bitcoin block existence check
- https://blockstream.info/api/block/960397
Full record
Track page: Nocturne No. 7 in C-Sharp Minor, Op. 27, No. 1 · Machine-readable JSON-LD