Choi Joo
type: MusicGroup
popularity: 10
followers: 14001
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x943e22ba3fc24a4830485be194fb0beb3f2f90c317d5d6ee517d31e862e25d90
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/52a01eee-8a18-41cc-897c-ad5569d1bc1a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/52a01eee-8a18-41cc-897c-ad5569d1bc1a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/52a01eee-8a18-41cc-897c-ad5569d1bc1a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x943e22ba3fc24a4830485be194fb0beb3f2f90c317d5d6ee517d31e862e25d90","name":"Choi Joo","registered_at":"2026-06-16T18:19:02Z","symbol":"NIM1135707","token_address":"0x9684d96320907e05a4d58516047c4ea649f2e374","type":"artist","uuid":"52a01eee-8a18-41cc-897c-ad5569d1bc1a"}
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 0x943e22ba3fc24a4830485be194fb0beb3f2f90c317d5d6ee517d31e862e25d90. 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/52a01eee-8a18-41cc-897c-ad5569d1bc1a.json and https://artists.proofprofile.net/proofs/artist/52a01eee-8a18-41cc-897c-ad5569d1bc1a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x943e22ba3fc24a4830485be194fb0beb3f2f90c317d5d6ee517d31e862e25d90","name":"Choi Joo","registered_at":"2026-06-16T18:19:02Z","symbol":"NIM1135707","token_address":"0x9684d96320907e05a4d58516047c4ea649f2e374","type":"artist","uuid":"52a01eee-8a18-41cc-897c-ad5569d1bc1a"}
album: The Face in the Stars
  type: MusicAlbum
  date published: 2013-01-01
album: Ogtorgui
  type: MusicAlbum
  date published: 2015-12-01
album: Od
  type: MusicAlbum
  date published: 2024-02-08