ISRC DEF059902400
Verified recording
DEF059902400 is “Etude in F minor, Op. posth. " Méthode des méthodes "” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xc4ce9a83af47fe36f2316bb599aaf3b2ce434f4d7a00917a1396902ce7bae992 and independently timestamped
in Bitcoin block 960155 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059902400.
Recording identifiers
- ISRC
- DEF059902400
- Title
- Etude in F minor, Op. posth. " Méthode des méthodes "
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xc4ce9a83af47fe36f2316bb599aaf3b2ce434f4d7a00917a1396902ce7bae992
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T22:13:32+00:00
- Bitcoin block
- 960155
- Canonical record hash
sha256:e8a00829022342c74296301fc224e6fc24eb4cb2102262998fce9145e5c8ef2c- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059902400
- Bitcoin block existence check
- https://blockstream.info/api/block/960155
Full record
Track page: Etude in F minor, Op. posth. " Méthode des méthodes " · Machine-readable JSON-LD