ISRC DEF059205021
Verified recording
DEF059205021 is “Cello Concerto: I. Quarter = 40. –” by György Ligeti,
registered on the CopyrightChains blockchain with CopyrightID
0xf987daf74bf0661ee954545cb95c5ea8f44077de26b6c1972f1079b4e20098ee and independently timestamped
in Bitcoin block 960264 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059205021.
Recording identifiers
- ISRC
- DEF059205021
- Title
- Cello Concerto: I. Quarter = 40. –
- Artist
- György Ligeti
- CopyrightID (CopyrightChains transaction hash)
0xf987daf74bf0661ee954545cb95c5ea8f44077de26b6c1972f1079b4e20098ee
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T14:36:16+00:00
- Bitcoin block
- 960264
- Canonical record hash
sha256:75061b848f49aa40afc06d95a5dfd3ccda227c5eb31be51d8ce3efb86c9a1dc7- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059205021
- Bitcoin block existence check
- https://blockstream.info/api/block/960264
Full record
Track page: Cello Concerto: I. Quarter = 40. – · Machine-readable JSON-LD