ISRC DEF059004353
Verified recording
DEF059004353 is “Mazurka No. 7 in F minor Op. 7 No. 3” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x9812a2ad89b0cc4ac77f6a146a826805a74619513b4eea3846da2de77dbf1eb5 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/DEF059004353.
Recording identifiers
- ISRC
- DEF059004353
- Title
- Mazurka No. 7 in F minor Op. 7 No. 3
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x9812a2ad89b0cc4ac77f6a146a826805a74619513b4eea3846da2de77dbf1eb5
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T12:24:41+00:00
- Bitcoin block
- 960397
- Canonical record hash
sha256:de4c84e010f7ffbfb7832e87450b6b04e60e2e4956eb1c0970def4d51d5e7559- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059004353
- Bitcoin block existence check
- https://blockstream.info/api/block/960397
Full record
Track page: Mazurka No. 7 in F minor Op. 7 No. 3 · Machine-readable JSON-LD