Ian Calk
type: MusicGroup
popularity: 10
followers: 126
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6fa37c623f42c99727d243654ba40d89109c7749e3ca4fe9ca7904789c4a1fa3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954038
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954038
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3e08fc48-7b81-49e7-a506-f9346b471254.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3e08fc48-7b81-49e7-a506-f9346b471254.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3e08fc48-7b81-49e7-a506-f9346b471254
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T02:57:22Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6fa37c623f42c99727d243654ba40d89109c7749e3ca4fe9ca7904789c4a1fa3","name":"Ian Calk","registered_at":"2026-06-16T11:11:11Z","symbol":"NIM1033637","token_address":"0x1137c03ba334b01ec4e682cadb97025b38073737","type":"artist","uuid":"3e08fc48-7b81-49e7-a506-f9346b471254"}
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 0x6fa37c623f42c99727d243654ba40d89109c7749e3ca4fe9ca7904789c4a1fa3. Chain 2 (Bitcoin): anchored in block 954039 (2026-06-17T03:00:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e08fc48-7b81-49e7-a506-f9346b471254.json and https://artists.proofprofile.net/proofs/artist/3e08fc48-7b81-49e7-a506-f9346b471254.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T03:00:41Z
  text: {"copyright_id":"0x6fa37c623f42c99727d243654ba40d89109c7749e3ca4fe9ca7904789c4a1fa3","name":"Ian Calk","registered_at":"2026-06-16T11:11:11Z","symbol":"NIM1033637","token_address":"0x1137c03ba334b01ec4e682cadb97025b38073737","type":"artist","uuid":"3e08fc48-7b81-49e7-a506-f9346b471254"}
album: Save Me (Peter's Song)
  type: MusicAlbum
  date published: 2015-04-03