Maari Kallberg
type: MusicGroup
popularity: 2
followers: 74
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x75174c05fae6841f9d79156552d4708ade2c2fc840cc4dfe4c7f2415db9609f2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/93df35f8-ffb0-473b-b180-3a7c06f4176e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/93df35f8-ffb0-473b-b180-3a7c06f4176e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/93df35f8-ffb0-473b-b180-3a7c06f4176e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x75174c05fae6841f9d79156552d4708ade2c2fc840cc4dfe4c7f2415db9609f2","name":"Maari Kallberg","registered_at":"2026-06-17T17:17:40Z","symbol":"NIM1464529","token_address":"0x0713b4d857cf8d87db8b8b2b09518f83eee427e1","type":"artist","uuid":"93df35f8-ffb0-473b-b180-3a7c06f4176e"}
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 0x75174c05fae6841f9d79156552d4708ade2c2fc840cc4dfe4c7f2415db9609f2. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93df35f8-ffb0-473b-b180-3a7c06f4176e.json and https://artists.proofprofile.net/proofs/artist/93df35f8-ffb0-473b-b180-3a7c06f4176e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x75174c05fae6841f9d79156552d4708ade2c2fc840cc4dfe4c7f2415db9609f2","name":"Maari Kallberg","registered_at":"2026-06-17T17:17:40Z","symbol":"NIM1464529","token_address":"0x0713b4d857cf8d87db8b8b2b09518f83eee427e1","type":"artist","uuid":"93df35f8-ffb0-473b-b180-3a7c06f4176e"}
album: Joikuja Karjalasta - Yoiks from Karelia
  type: MusicAlbum
  date published: 2008-08-20