Marko Ivanovic
type: MusicGroup
genre: neoclassical
description: Marko Ivanovic (; born 30 June 1995) is a Montenegrin professional footballer who plays as a centre-back. Marko is the first player from Montenegro who ever played in the leagues of Cambodia, Nepal a
popularity: 20
followers: 61
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x93f7b718c4ae538ba869a013537c411e3613d0ad1238d771c95b9b08fcbc1846
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953807
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953807
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f4b76401-c2e6-4aca-89d8-732e8af34700.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f4b76401-c2e6-4aca-89d8-732e8af34700.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f4b76401-c2e6-4aca-89d8-732e8af34700
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T16:39:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x93f7b718c4ae538ba869a013537c411e3613d0ad1238d771c95b9b08fcbc1846","name":"Marko Ivanovic","registered_at":"2026-06-15T06:12:14Z","symbol":"NIM0706883","token_address":"0x47c6a42b135554626707cabdb22d50bc6b31e30e","type":"artist","uuid":"f4b76401-c2e6-4aca-89d8-732e8af34700"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f7b718c4ae538ba869a013537c411e3613d0ad1238d771c95b9b08fcbc1846. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4b76401-c2e6-4aca-89d8-732e8af34700.json and https://artists.proofprofile.net/proofs/artist/f4b76401-c2e6-4aca-89d8-732e8af34700.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T16:39:18Z
  text: {"copyright_id":"0x93f7b718c4ae538ba869a013537c411e3613d0ad1238d771c95b9b08fcbc1846","name":"Marko Ivanovic","registered_at":"2026-06-15T06:12:14Z","symbol":"NIM0706883","token_address":"0x47c6a42b135554626707cabdb22d50bc6b31e30e","type":"artist","uuid":"f4b76401-c2e6-4aca-89d8-732e8af34700"}
album: Beethoven, Martinu, Kabelac
  type: MusicAlbum
  date published: 2012-09-01