Henry Blair
type: MusicGroup
description: Henry Blair may refer to: Henry Blair (child actor), American film and radio actor Henry Blair (inventor) (1807–1860), second African American inventor to receive a patent Henry W. Blair (1834–192
popularity: 2
followers: 77
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe7de06adb194c1d5b5fbd0b358f5417fa45de987d47e97a05224d627b5c28c0f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954553
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954553
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ac983377-d9e2-4c7c-8108-d2a062af313c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ac983377-d9e2-4c7c-8108-d2a062af313c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ac983377-d9e2-4c7c-8108-d2a062af313c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T11:51:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe7de06adb194c1d5b5fbd0b358f5417fa45de987d47e97a05224d627b5c28c0f","name":"Henry Blair","registered_at":"2026-06-20T09:48:20Z","symbol":"NIM1587245","token_address":"0x059a0a51b39d229c07c1ad55028c6400ede7bbc4","type":"artist","uuid":"ac983377-d9e2-4c7c-8108-d2a062af313c"}
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 0xe7de06adb194c1d5b5fbd0b358f5417fa45de987d47e97a05224d627b5c28c0f. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac983377-d9e2-4c7c-8108-d2a062af313c.json and https://artists.proofprofile.net/proofs/artist/ac983377-d9e2-4c7c-8108-d2a062af313c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T11:51:30Z
  text: {"copyright_id":"0xe7de06adb194c1d5b5fbd0b358f5417fa45de987d47e97a05224d627b5c28c0f","name":"Henry Blair","registered_at":"2026-06-20T09:48:20Z","symbol":"NIM1587245","token_address":"0x059a0a51b39d229c07c1ad55028c6400ede7bbc4","type":"artist","uuid":"ac983377-d9e2-4c7c-8108-d2a062af313c"}
album: Sparky's Magic Piano
  type: MusicAlbum
  date published: 2000-01-01
album: Sparky's Magic Piano
  type: MusicAlbum
  date published: 2014-02-07