ISRC JPZ921507686
Verified recording
JPZ921507686 is “Etude for Twelve Fingers” by matryoshka,
registered on the CopyrightChains blockchain with CopyrightID
0xe4d5dfca1fcfa917a611fd969eeb14179fcba4c4496d24bb04202ce8c906e7e8 and independently timestamped
in Bitcoin block 953520 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921507686.
Recording identifiers
- ISRC
- JPZ921507686
- Title
- Etude for Twelve Fingers
- Artist
- matryoshka
- CopyrightID (CopyrightChains transaction hash)
0xe4d5dfca1fcfa917a611fd969eeb14179fcba4c4496d24bb04202ce8c906e7e8
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:555d84901ff016315b02da614c543ceb6a37b5211d6c3b2cb82ff168ad3a47d2- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921507686
- Bitcoin block existence check
- https://blockstream.info/api/block/953520
Full record
Track page: Etude for Twelve Fingers · Machine-readable JSON-LD