H. B. Barnum
type: MusicGroup
genre: northern soul
description: Hidle Brown Barnum (born July 15, 1936) is an American pianist, arranger, record producer, songwriter, and former child actor. Biography After winning a nationwide talent contest at the age of four a
popularity: 2
followers: 35
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcdb21913b26c4227e0921520b559ba4170f873128c335d0ffc069e30b349a263
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953996
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953996
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/30871452-bc65-4eb5-a9b6-aaf3c29f780e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/30871452-bc65-4eb5-a9b6-aaf3c29f780e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/30871452-bc65-4eb5-a9b6-aaf3c29f780e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:04:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcdb21913b26c4227e0921520b559ba4170f873128c335d0ffc069e30b349a263","name":"H. B. Barnum","registered_at":"2026-06-16T06:27:26Z","symbol":"NIM0965914","token_address":"0x0186111578b3a82f73ff63d3a78662dddb8d5c2e","type":"artist","uuid":"30871452-bc65-4eb5-a9b6-aaf3c29f780e"}
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 0xcdb21913b26c4227e0921520b559ba4170f873128c335d0ffc069e30b349a263. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30871452-bc65-4eb5-a9b6-aaf3c29f780e.json and https://artists.proofprofile.net/proofs/artist/30871452-bc65-4eb5-a9b6-aaf3c29f780e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:04:35Z
  text: {"copyright_id":"0xcdb21913b26c4227e0921520b559ba4170f873128c335d0ffc069e30b349a263","name":"H. B. Barnum","registered_at":"2026-06-16T06:27:26Z","symbol":"NIM0965914","token_address":"0x0186111578b3a82f73ff63d3a78662dddb8d5c2e","type":"artist","uuid":"30871452-bc65-4eb5-a9b6-aaf3c29f780e"}