Harry Douglas
type: MusicGroup
genre: doo-wop
description: Harry Douglas IV (born September 16, 1984) is an American former professional football player who was a wide receiver for 10 seasons in the National Football League (NFL). He played college football f
popularity: 2
followers: 85
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe71143fc7816801e63684de1bb6f0efd0c1f47a79f427d44dd8a0906f0804089
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954031
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954031
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a1c4e80-d494-4539-817d-edbcf72dae2b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a1c4e80-d494-4539-817d-edbcf72dae2b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3a1c4e80-d494-4539-817d-edbcf72dae2b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:43:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe71143fc7816801e63684de1bb6f0efd0c1f47a79f427d44dd8a0906f0804089","name":"Harry Douglas","registered_at":"2026-06-16T10:09:50Z","symbol":"NIM1019005","token_address":"0xa559542bc261f3ca8796a81283fcb8b247a2339e","type":"artist","uuid":"3a1c4e80-d494-4539-817d-edbcf72dae2b"}
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 0xe71143fc7816801e63684de1bb6f0efd0c1f47a79f427d44dd8a0906f0804089. Chain 2 (Bitcoin): anchored in block 954031 (2026-06-17T01:43:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a1c4e80-d494-4539-817d-edbcf72dae2b.json and https://artists.proofprofile.net/proofs/artist/3a1c4e80-d494-4539-817d-edbcf72dae2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T01:43:23Z
  text: {"copyright_id":"0xe71143fc7816801e63684de1bb6f0efd0c1f47a79f427d44dd8a0906f0804089","name":"Harry Douglas","registered_at":"2026-06-16T10:09:50Z","symbol":"NIM1019005","token_address":"0xa559542bc261f3ca8796a81283fcb8b247a2339e","type":"artist","uuid":"3a1c4e80-d494-4539-817d-edbcf72dae2b"}
album: Diamanter
  type: MusicAlbum
  date published: 2006-06-19
album: Old And New Songs 1952-1972
  type: MusicAlbum
  date published: 2016-01-15