Ketil Lien
type: MusicGroup
genre: new age
popularity: 4
followers: 2418
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x881f17b2ea14436858aa6b09c4e90d6e35f40da6b714a86d82203d23e2f0343a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953903
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953903
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/151eecce-cb1e-485d-a95c-c16d8d271538.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/151eecce-cb1e-485d-a95c-c16d8d271538.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/151eecce-cb1e-485d-a95c-c16d8d271538
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:05:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x881f17b2ea14436858aa6b09c4e90d6e35f40da6b714a86d82203d23e2f0343a","name":"Ketil Lien","registered_at":"2026-06-15T20:47:16Z","symbol":"NIM0827387","token_address":"0xf6c15c78a30c00c57bc8de00ea52967033192401","type":"artist","uuid":"151eecce-cb1e-485d-a95c-c16d8d271538"}
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 0x881f17b2ea14436858aa6b09c4e90d6e35f40da6b714a86d82203d23e2f0343a. Chain 2 (Bitcoin): anchored in block 953903 (2026-06-16T07:05:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/151eecce-cb1e-485d-a95c-c16d8d271538.json and https://artists.proofprofile.net/proofs/artist/151eecce-cb1e-485d-a95c-c16d8d271538.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:05:05Z
  text: {"copyright_id":"0x881f17b2ea14436858aa6b09c4e90d6e35f40da6b714a86d82203d23e2f0343a","name":"Ketil Lien","registered_at":"2026-06-15T20:47:16Z","symbol":"NIM0827387","token_address":"0xf6c15c78a30c00c57bc8de00ea52967033192401","type":"artist","uuid":"151eecce-cb1e-485d-a95c-c16d8d271538"}
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