Kréen
type: MusicGroup
genre: black metal
popularity: 3
followers: 957
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x646609de6dd62e527b425143200bf766dda6835d9efe4e293e999540ce1c08c1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954043
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f0c473f-2f81-44aa-a1be-a0ae82509547.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f0c473f-2f81-44aa-a1be-a0ae82509547.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3f0c473f-2f81-44aa-a1be-a0ae82509547
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:15:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x646609de6dd62e527b425143200bf766dda6835d9efe4e293e999540ce1c08c1","name":"Kréen","registered_at":"2026-06-16T11:36:21Z","symbol":"NIM1039651","token_address":"0x747686650e257ab5dd73262990e3f42094a0c780","type":"artist","uuid":"3f0c473f-2f81-44aa-a1be-a0ae82509547"}
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 0x646609de6dd62e527b425143200bf766dda6835d9efe4e293e999540ce1c08c1. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f0c473f-2f81-44aa-a1be-a0ae82509547.json and https://artists.proofprofile.net/proofs/artist/3f0c473f-2f81-44aa-a1be-a0ae82509547.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:15:20Z
  text: {"copyright_id":"0x646609de6dd62e527b425143200bf766dda6835d9efe4e293e999540ce1c08c1","name":"Kréen","registered_at":"2026-06-16T11:36:21Z","symbol":"NIM1039651","token_address":"0x747686650e257ab5dd73262990e3f42094a0c780","type":"artist","uuid":"3f0c473f-2f81-44aa-a1be-a0ae82509547"}
album: Cenizas
  type: MusicAlbum
  date published: 2022-01-07
album: Mar de Ánimas
  type: MusicAlbum
  date published: 2022-12-26
album: Lápidas
  type: MusicAlbum
  date published: 2023-11-17
album: Ecos de Olas, C​é​firos y Llamaradas
  type: MusicAlbum
  date published: 2024-06-07