ISRC FINDE2300084
Verified recording
FINDE2300084 is “Mazurka No. 50 in A minor, B. 134, ‘Notre temps’” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x301083517bb3f43f9c944b9e290df6c286ba493de08fd4c2979e9265f11be98f and independently timestamped
in Bitcoin block 960334 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FINDE2300084.
Recording identifiers
- ISRC
- FINDE2300084
- Title
- Mazurka No. 50 in A minor, B. 134, ‘Notre temps’
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x301083517bb3f43f9c944b9e290df6c286ba493de08fd4c2979e9265f11be98f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T02:19:15+00:00
- Bitcoin block
- 960334
- Canonical record hash
sha256:ad7b860d8c41d9ba0d9f2bac5fa1637d27efe2059f78cbca852128704aa098f6- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FINDE2300084
- Bitcoin block existence check
- https://blockstream.info/api/block/960334
Full record
Track page: Mazurka No. 50 in A minor, B. 134, ‘Notre temps’ · Machine-readable JSON-LD