Joseph Humphreys
type: MusicGroup
description: Joseph Edward Humphreys (October 17, 1872 – July 10, 1936) was an American boxing official and announcer. He was one of the most popular fight announcers from the turn of the 20th century up until the
popularity: 8
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd2cd803261a459d2ce3f96bf0e1d9422750ef828ad4208955eaa2ad5d2e5aea4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ebef2f41-8925-4a08-81b1-938c966b28e8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ebef2f41-8925-4a08-81b1-938c966b28e8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ebef2f41-8925-4a08-81b1-938c966b28e8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd2cd803261a459d2ce3f96bf0e1d9422750ef828ad4208955eaa2ad5d2e5aea4","name":"Joseph Humphreys","registered_at":"2026-06-21T11:08:45Z","symbol":"NIM1907186","token_address":"0x477d8a306c02bf9a2ac2686398b99a2474880279","type":"artist","uuid":"ebef2f41-8925-4a08-81b1-938c966b28e8"}
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 0xd2cd803261a459d2ce3f96bf0e1d9422750ef828ad4208955eaa2ad5d2e5aea4. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebef2f41-8925-4a08-81b1-938c966b28e8.json and https://artists.proofprofile.net/proofs/artist/ebef2f41-8925-4a08-81b1-938c966b28e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xd2cd803261a459d2ce3f96bf0e1d9422750ef828ad4208955eaa2ad5d2e5aea4","name":"Joseph Humphreys","registered_at":"2026-06-21T11:08:45Z","symbol":"NIM1907186","token_address":"0x477d8a306c02bf9a2ac2686398b99a2474880279","type":"artist","uuid":"ebef2f41-8925-4a08-81b1-938c966b28e8"}