thumb|Composer Georges Aperghis in his studio Georges Aperghis (; born 23 December 1945) is a Greek composer working primarily in the field of experimental music theater but has also composed a large
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d00aa885078a31471af185f5611f31cb87ea51ae297c8969894bc471eaca405. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f70c9425-fa4d-44ce-b906-a7392b20c499.json and https://artists.proofprofile.net/proofs/artist/f70c9425-fa4d-44ce-b906-a7392b20c499.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Aperghis-Machinations-Spectacle musical pour 4 femmes etordi nateur
Georges Aperghis: Crosswind, Alter Ego, Rasch, Volte-face & Signaux
Aperghis: Contretemps, Seesaw, Parlando & Teeter-Tooter
Aperghis: Faux mouvement for String Trio
Musica viva, Vol. 28: Georges Aperghis (Live)
Georges Aperghis: 14 Récitations, Op. 46