Jimmy Halperin
type: MusicGroup
genre: cool jazz
genre: free jazz
description: 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
popularity: 2
followers: 86
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
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  description: 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).
  date published: 2026-06-17T08:11:48Z
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album: Psalm
  type: MusicAlbum
  date published: 1999-01-01
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  type: MusicAlbum
  date published: 2017-01-27
album: EAST OF THE SUN
  type: MusicAlbum
  date published: 2021-07-28
album: Excitement from Underground
  type: MusicAlbum
  date published: 2025-06-13