Harold Lang
type: MusicGroup
description: Harold Lang may refer to: Harold Lang (cricketer) (1905–1991), Australian cricketer Harold Lang (dancer) (1920–1985), American dancer, singer and actor Harold Lang (British actor) (1923–1970), Bri
popularity: 3
followers: 137
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa09adf27d9fb9d81c531ed09557c0936b2c7fc140e074f391288d852ffc1c829
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8ac4f88b-8c3b-4103-9cf4-3cb62ae14ba8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8ac4f88b-8c3b-4103-9cf4-3cb62ae14ba8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8ac4f88b-8c3b-4103-9cf4-3cb62ae14ba8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa09adf27d9fb9d81c531ed09557c0936b2c7fc140e074f391288d852ffc1c829","name":"Harold Lang","registered_at":"2026-06-17T14:02:45Z","symbol":"NIM1417996","token_address":"0x6009dbc4fe07964d589722671bfbc9328d386e69","type":"artist","uuid":"8ac4f88b-8c3b-4103-9cf4-3cb62ae14ba8"}
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 0xa09adf27d9fb9d81c531ed09557c0936b2c7fc140e074f391288d852ffc1c829. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ac4f88b-8c3b-4103-9cf4-3cb62ae14ba8.json and https://artists.proofprofile.net/proofs/artist/8ac4f88b-8c3b-4103-9cf4-3cb62ae14ba8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xa09adf27d9fb9d81c531ed09557c0936b2c7fc140e074f391288d852ffc1c829","name":"Harold Lang","registered_at":"2026-06-17T14:02:45Z","symbol":"NIM1417996","token_address":"0x6009dbc4fe07964d589722671bfbc9328d386e69","type":"artist","uuid":"8ac4f88b-8c3b-4103-9cf4-3cb62ae14ba8"}