Rakhat-Bi Abdyssagin (; born February 2, 1999) is a composer, concert pianist, music theorist, and researcher from Kazakhstan. He is the author of three operas: The Path Lit by the Sun (2019), The Mys
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 0x728c1a02eb23f393de8aff0000d4a3aa4f127f1f478d302d074daa194d3b9ba9. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ffb010c3-e1bd-4eae-9d78-357ea85df637.json and https://artists.proofprofile.net/proofs/artist/ffb010c3-e1bd-4eae-9d78-357ea85df637.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rakhat-Bi Abdyssagin Plays Viennese Classics: Haydn, Mozart, Beethoven