Jimmy Halperin (1958) is an American saxophonist (tenor and soprano) and composer in avant-garde jazz and new improvised music. Biography Halperin was influenced by Lennie Tristano, and he got les
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 0x0c22d53a2c448c1d0f701f86a3972ab70c46b828168dec72cd0a6fc77730c110. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6722810d-76a8-4e17-b317-a206c8181a91.json and https://artists.proofprofile.net/proofs/artist/6722810d-76a8-4e17-b317-a206c8181a91.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).