Kvartet 4M
type: MusicGroup
popularity: 3
followers: 467
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xccacdd9510c30567d1bf1c824b275b4665cb3723a63defa6bc5718a0a1ec36b8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a7b1a436-39c6-4089-a712-0a50a18a952c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a7b1a436-39c6-4089-a712-0a50a18a952c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a7b1a436-39c6-4089-a712-0a50a18a952c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xccacdd9510c30567d1bf1c824b275b4665cb3723a63defa6bc5718a0a1ec36b8","name":"Kvartet 4M","registered_at":"2026-06-20T08:13:00Z","symbol":"NIM1562578","token_address":"0x0c2b6cbb27c68676bad5112d555ddd1b96c3e51f","type":"artist","uuid":"a7b1a436-39c6-4089-a712-0a50a18a952c"}
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 0xccacdd9510c30567d1bf1c824b275b4665cb3723a63defa6bc5718a0a1ec36b8. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7b1a436-39c6-4089-a712-0a50a18a952c.json and https://artists.proofprofile.net/proofs/artist/a7b1a436-39c6-4089-a712-0a50a18a952c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xccacdd9510c30567d1bf1c824b275b4665cb3723a63defa6bc5718a0a1ec36b8","name":"Kvartet 4M","registered_at":"2026-06-20T08:13:00Z","symbol":"NIM1562578","token_address":"0x0c2b6cbb27c68676bad5112d555ddd1b96c3e51f","type":"artist","uuid":"a7b1a436-39c6-4089-a712-0a50a18a952c"}
album: Vokalni Kvartet 4M
  type: MusicAlbum
  date published: 1972-01-01
album: Vokalni Kvartet 4M
  type: MusicAlbum
  date published: 1972-10-11
album: Kronologija, 20 Izvornih Snimaka
  type: MusicAlbum
  date published: 2002-01-01
album: Kronologija, 20 Izvornih Snimaka
  type: MusicAlbum
  date published: 2002-01-01
album: Kronologija, 20 Izvornih Snimaka
  type: MusicAlbum
  date published: 2002-11-10
album: Zlatna Kolekcija
  type: MusicAlbum
  date published: 2016-01-01
album: Zlatna Kolekcija
  type: MusicAlbum
  date published: 2016-04-14