Andreas Markou
type: MusicGroup
popularity: 3
followers: 37
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc2abcc748f66cea66fd0f87baebc031d25c6f85289e8618b053b40b1ba8bea7f
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/e411330f-7beb-4a8d-8ede-54e7a794c772.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e411330f-7beb-4a8d-8ede-54e7a794c772.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e411330f-7beb-4a8d-8ede-54e7a794c772
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc2abcc748f66cea66fd0f87baebc031d25c6f85289e8618b053b40b1ba8bea7f","name":"Andreas Markou","registered_at":"2026-06-21T08:02:01Z","symbol":"NIM1865342","token_address":"0x03d82098677c9201644c5eefc7e926ba9ccf289c","type":"artist","uuid":"e411330f-7beb-4a8d-8ede-54e7a794c772"}
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 0xc2abcc748f66cea66fd0f87baebc031d25c6f85289e8618b053b40b1ba8bea7f. 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/e411330f-7beb-4a8d-8ede-54e7a794c772.json and https://artists.proofprofile.net/proofs/artist/e411330f-7beb-4a8d-8ede-54e7a794c772.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xc2abcc748f66cea66fd0f87baebc031d25c6f85289e8618b053b40b1ba8bea7f","name":"Andreas Markou","registered_at":"2026-06-21T08:02:01Z","symbol":"NIM1865342","token_address":"0x03d82098677c9201644c5eefc7e926ba9ccf289c","type":"artist","uuid":"e411330f-7beb-4a8d-8ede-54e7a794c772"}
album: Chroniko Tis Metanasteusis
  type: MusicAlbum
  date published: 2017-08-23
  track: Finale - Instrumental
    type: MusicRecording
    duration: PT2M25S
    duration ms: 145732
    explicit: false
    by artist: Andreas Markou
    in album: Chroniko Tis Metanasteusis
      type: MusicAlbum
      date published: 2017-08-23
    isrc code: GRFM11700540
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T23:47:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x769b8cd49ab78d8c4146fa6884827fc2b5c7096159fa734ac5ac1cce211c9677
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959080
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959080
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRFM11700540
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T02:49:25Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769b8cd49ab78d8c4146fa6884827fc2b5c7096159fa734ac5ac1cce211c9677. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:49:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRFM11700540.
      date published: 2026-07-22T02:49:25Z
    audio: Finale - Instrumental
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 175.92
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.584
      additional property: Energy
        type: PropertyValue
        value: 0.783
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.269
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.759
      additional property: Liveness
        type: PropertyValue
        value: 0.089
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.862
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.68
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major