ISRC DEF058104712
Verified recording
DEF058104712 is “Chamber Concerto for 13 Instrumentalists: II. Calmo, sostenuto” by György Ligeti,
registered on the CopyrightChains blockchain with CopyrightID
0x1f7f569f601dbdd445ee83214f2b13b8f30a7b6430e1864c92bb96adbb69fae4 and independently timestamped
in Bitcoin block 960344 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058104712.
Recording identifiers
- ISRC
- DEF058104712
- Title
- Chamber Concerto for 13 Instrumentalists: II. Calmo, sostenuto
- Artist
- György Ligeti
- CopyrightID (CopyrightChains transaction hash)
0x1f7f569f601dbdd445ee83214f2b13b8f30a7b6430e1864c92bb96adbb69fae4
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T04:14:58+00:00
- Bitcoin block
- 960344
- Canonical record hash
sha256:95878b8bc7aeb59886cbd6a63c7457de898828e41be9a6ccced99a56c196ba97- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058104712
- Bitcoin block existence check
- https://blockstream.info/api/block/960344
Full record
Track page: Chamber Concerto for 13 Instrumentalists: II. Calmo, sostenuto · Machine-readable JSON-LD