Kaj Backman
type: MusicGroup
genre: album rock
genre: arena rock
popularity: 2
followers: 14
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x638f76a71c57f4ea39ab5bdd9c59d117e45ff828b7c3aa72fc9e3c1b5547ed2d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/edddcb04-f8b1-419f-b29c-c256ae3de310.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/edddcb04-f8b1-419f-b29c-c256ae3de310.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/edddcb04-f8b1-419f-b29c-c256ae3de310
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x638f76a71c57f4ea39ab5bdd9c59d117e45ff828b7c3aa72fc9e3c1b5547ed2d","name":"Kaj Backman","registered_at":"2026-06-21T11:58:12Z","symbol":"NIM1916305","token_address":"0x6c7592dea4b4cfb79e5821635b649b2769965df7","type":"artist","uuid":"edddcb04-f8b1-419f-b29c-c256ae3de310"}
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 0x638f76a71c57f4ea39ab5bdd9c59d117e45ff828b7c3aa72fc9e3c1b5547ed2d. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edddcb04-f8b1-419f-b29c-c256ae3de310.json and https://artists.proofprofile.net/proofs/artist/edddcb04-f8b1-419f-b29c-c256ae3de310.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x638f76a71c57f4ea39ab5bdd9c59d117e45ff828b7c3aa72fc9e3c1b5547ed2d","name":"Kaj Backman","registered_at":"2026-06-21T11:58:12Z","symbol":"NIM1916305","token_address":"0x6c7592dea4b4cfb79e5821635b649b2769965df7","type":"artist","uuid":"edddcb04-f8b1-419f-b29c-c256ae3de310"}