Hayden Chisholm
type: MusicGroup
genre: drone
genre: free jazz
description: Hayden Chisholm (born 27 May 1975) is a saxophonist and multi-instrumentalist from New Zealand. He performs jazz, improvised music, and contemporary classical music. Life and career Chisholm was rai
popularity: 8
followers: 993
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x591f1e1ca0fdf74069cd939b79afd8912b2aec341aec52950c1b00acf644ab18
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f4b8987f-d54b-41a9-95e4-909be4622885.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f4b8987f-d54b-41a9-95e4-909be4622885.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f4b8987f-d54b-41a9-95e4-909be4622885
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591f1e1ca0fdf74069cd939b79afd8912b2aec341aec52950c1b00acf644ab18. 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/f4b8987f-d54b-41a9-95e4-909be4622885.json and https://artists.proofprofile.net/proofs/artist/f4b8987f-d54b-41a9-95e4-909be4622885.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x591f1e1ca0fdf74069cd939b79afd8912b2aec341aec52950c1b00acf644ab18","name":"Hayden Chisholm","registered_at":"2026-06-21T14:38:08Z","symbol":"NIM1948577","token_address":"0x226c8faee82b6d4b4e13b4db2f1fb6864c0a15d5","type":"artist","uuid":"f4b8987f-d54b-41a9-95e4-909be4622885"}
album: Timekeepers II
  type: MusicAlbum
  date published: 2023-09-29
album: Chisholm - Schmickler: Solo and Accompaniment
  type: MusicAlbum
  date published: 2006-07-06