Joe Louis
type: MusicGroup
description: Joseph Louis Barrow (May 13, 1914 – April 12, 1981) was an American professional boxer who competed from 1934 to 1951. Nicknamed "the Brown Bomber", Louis is widely regarded as one of the greatest and
popularity: 3
followers: 5026
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf0ec54f861a57ce8aba8cd08d65ce44b7c075eb9f16e52fb96e51b430367c8a4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9430aba1-ae6b-4a3a-b0fc-085c626a6773.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9430aba1-ae6b-4a3a-b0fc-085c626a6773.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9430aba1-ae6b-4a3a-b0fc-085c626a6773
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf0ec54f861a57ce8aba8cd08d65ce44b7c075eb9f16e52fb96e51b430367c8a4","name":"Joe Louis","registered_at":"2026-06-17T17:07:30Z","symbol":"NIM1462100","token_address":"0xbd4838d37ea58fb570232ac430c32ba10dfd480c","type":"artist","uuid":"9430aba1-ae6b-4a3a-b0fc-085c626a6773"}
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 0xf0ec54f861a57ce8aba8cd08d65ce44b7c075eb9f16e52fb96e51b430367c8a4. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9430aba1-ae6b-4a3a-b0fc-085c626a6773.json and https://artists.proofprofile.net/proofs/artist/9430aba1-ae6b-4a3a-b0fc-085c626a6773.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
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