Joe Black
type: MusicGroup
description: Joseph Black (February 8, 1924 – May 17, 2002) was an American professional baseball pitcher in the Negro leagues and Major League Baseball (MLB) for the Baltimore Elite Giants, Brooklyn Dodgers, Cinc
popularity: 2
followers: 140
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0af121c0904f005067137cb46a7b594491b6f042a45748e53a505e475a4420bb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4a37d196-7e4b-489c-ad7e-a1871ff7055b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4a37d196-7e4b-489c-ad7e-a1871ff7055b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4a37d196-7e4b-489c-ad7e-a1871ff7055b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0af121c0904f005067137cb46a7b594491b6f042a45748e53a505e475a4420bb","name":"Joe Black","registered_at":"2026-06-16T15:26:44Z","symbol":"NIM1094604","token_address":"0x1b25083d0be750062f37f6fb660f3e6ae160c136","type":"artist","uuid":"4a37d196-7e4b-489c-ad7e-a1871ff7055b"}
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 0x0af121c0904f005067137cb46a7b594491b6f042a45748e53a505e475a4420bb. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a37d196-7e4b-489c-ad7e-a1871ff7055b.json and https://artists.proofprofile.net/proofs/artist/4a37d196-7e4b-489c-ad7e-a1871ff7055b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x0af121c0904f005067137cb46a7b594491b6f042a45748e53a505e475a4420bb","name":"Joe Black","registered_at":"2026-06-16T15:26:44Z","symbol":"NIM1094604","token_address":"0x1b25083d0be750062f37f6fb660f3e6ae160c136","type":"artist","uuid":"4a37d196-7e4b-489c-ad7e-a1871ff7055b"}
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