Joe Henderson
type: MusicGroup
genre: vocal jazz
description: Joe Henderson (April 24, 1937 – June 30, 2001) was an American jazz tenor saxophonist and very occasional flute player. In a career spanning more than four decades, Henderson played with many of the l
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x15062f0ed2953f77fe2d8015f5b73f4852c399622cb4fea44973cd5398b5ee40
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e57c29ca-07a9-451a-99d2-498a6f15050c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e57c29ca-07a9-451a-99d2-498a6f15050c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e57c29ca-07a9-451a-99d2-498a6f15050c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x15062f0ed2953f77fe2d8015f5b73f4852c399622cb4fea44973cd5398b5ee40","name":"Joe Henderson","registered_at":"2026-06-21T08:06:13Z","symbol":"NIM1870487","token_address":"0x67e18deddc1cb8be58b4b5bb570ef366c700d814","type":"artist","uuid":"e57c29ca-07a9-451a-99d2-498a6f15050c"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15062f0ed2953f77fe2d8015f5b73f4852c399622cb4fea44973cd5398b5ee40. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e57c29ca-07a9-451a-99d2-498a6f15050c.json and https://artists.proofprofile.net/proofs/artist/e57c29ca-07a9-451a-99d2-498a6f15050c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0x15062f0ed2953f77fe2d8015f5b73f4852c399622cb4fea44973cd5398b5ee40","name":"Joe Henderson","registered_at":"2026-06-21T08:06:13Z","symbol":"NIM1870487","token_address":"0x67e18deddc1cb8be58b4b5bb570ef366c700d814","type":"artist","uuid":"e57c29ca-07a9-451a-99d2-498a6f15050c"}