Gavriel Lipkind (; born 1977) is an Israeli classical cellist based in The Netherlands. Lipkind made his radio debut performance aged eight, left Israel at an age of about 18, and received degrees fro
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 0xd750dcf1e84c1df3991785056c493108fde343a20f15279b4d372d03b4673156. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c6dd29f-0639-4c72-962f-80931a8fbd5e.json and https://artists.proofprofile.net/proofs/artist/0c6dd29f-0639-4c72-962f-80931a8fbd5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Miniautres & Folklore — 23 pieces for cello and piano