HF Official
type: MusicGroup
popularity: 2
followers: 63
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb21888d227796a93312cbd3c521b0fc5977c8a14b05922d5575da00cc576644f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953954
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953954
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/261b0bfa-ca32-45f2-8c4a-6b75a1783527.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/261b0bfa-ca32-45f2-8c4a-6b75a1783527.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/261b0bfa-ca32-45f2-8c4a-6b75a1783527
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:18:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb21888d227796a93312cbd3c521b0fc5977c8a14b05922d5575da00cc576644f","name":"HF Official","registered_at":"2026-06-16T02:47:01Z","symbol":"NIM0913259","token_address":"0xb6da29493797bc8d58f7f280a9e9e59fdbc84adb","type":"artist","uuid":"261b0bfa-ca32-45f2-8c4a-6b75a1783527"}
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 0xb21888d227796a93312cbd3c521b0fc5977c8a14b05922d5575da00cc576644f. Chain 2 (Bitcoin): anchored in block 953955 (2026-06-16T14:29:53Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/261b0bfa-ca32-45f2-8c4a-6b75a1783527.json and https://artists.proofprofile.net/proofs/artist/261b0bfa-ca32-45f2-8c4a-6b75a1783527.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:29:53Z
  text: {"copyright_id":"0xb21888d227796a93312cbd3c521b0fc5977c8a14b05922d5575da00cc576644f","name":"HF Official","registered_at":"2026-06-16T02:47:01Z","symbol":"NIM0913259","token_address":"0xb6da29493797bc8d58f7f280a9e9e59fdbc84adb","type":"artist","uuid":"261b0bfa-ca32-45f2-8c4a-6b75a1783527"}
album: Came From Nothing
  type: MusicAlbum
  date published: 2023-02-16
album: Running man open verse
  type: MusicAlbum
  date published: 2023-05-10
album: Sickest MC
  type: MusicAlbum
  date published: 2024-10-27