ISRC DEF059004364
Verified recording
DEF059004364 is “Mazurka No. 13 in A minor Op. 17 No. 4” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xf7296f7f3d95100cca92f36f401f6345bad520bf4e36d089a098c656e62a60bd and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059004364.
Recording identifiers
- ISRC
- DEF059004364
- Title
- Mazurka No. 13 in A minor Op. 17 No. 4
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xf7296f7f3d95100cca92f36f401f6345bad520bf4e36d089a098c656e62a60bd
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:afc86b110ae413996d5f8ab99d1cebeaf34b93e3fddf506a99306f0600441a2a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059004364
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Mazurka No. 13 in A minor Op. 17 No. 4 · Machine-readable JSON-LD