Hanna Hærum
type: MusicGroup
popularity: 4
followers: 19
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa359602440281f7fd7d47f2f8cbb47f61539623f534b31176a121bb90b1b4ef8
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/4cabe82b-332c-4df7-a417-2091ff3bf91f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4cabe82b-332c-4df7-a417-2091ff3bf91f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4cabe82b-332c-4df7-a417-2091ff3bf91f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa359602440281f7fd7d47f2f8cbb47f61539623f534b31176a121bb90b1b4ef8","name":"Hanna Hærum","registered_at":"2026-06-16T16:37:42Z","symbol":"NIM1111535","token_address":"0xcfd38260fc30773a371454a69e29a294e044d38e","type":"artist","uuid":"4cabe82b-332c-4df7-a417-2091ff3bf91f"}
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 0xa359602440281f7fd7d47f2f8cbb47f61539623f534b31176a121bb90b1b4ef8. 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/4cabe82b-332c-4df7-a417-2091ff3bf91f.json and https://artists.proofprofile.net/proofs/artist/4cabe82b-332c-4df7-a417-2091ff3bf91f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xa359602440281f7fd7d47f2f8cbb47f61539623f534b31176a121bb90b1b4ef8","name":"Hanna Hærum","registered_at":"2026-06-16T16:37:42Z","symbol":"NIM1111535","token_address":"0xcfd38260fc30773a371454a69e29a294e044d38e","type":"artist","uuid":"4cabe82b-332c-4df7-a417-2091ff3bf91f"}