Alexander Kostas
type: MusicGroup
popularity: 13
followers: 118
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8e2234e391049bc9a913ee86d65bbcc19dd3ba53b9121c93daea8ae52666ba15
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953786
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953786
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d6af7834-04fd-48e3-a588-d3b2604b719d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d6af7834-04fd-48e3-a588-d3b2604b719d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d6af7834-04fd-48e3-a588-d3b2604b719d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T12:56:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8e2234e391049bc9a913ee86d65bbcc19dd3ba53b9121c93daea8ae52666ba15","name":"Alexander Kostas","registered_at":"2026-06-15T03:05:46Z","symbol":"NIM0662368","token_address":"0xd18e9f93eb807b9cbeb33c9577c8089125b242d9","type":"artist","uuid":"d6af7834-04fd-48e3-a588-d3b2604b719d"}
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 0x8e2234e391049bc9a913ee86d65bbcc19dd3ba53b9121c93daea8ae52666ba15. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6af7834-04fd-48e3-a588-d3b2604b719d.json and https://artists.proofprofile.net/proofs/artist/d6af7834-04fd-48e3-a588-d3b2604b719d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T12:56:12Z
  text: {"copyright_id":"0x8e2234e391049bc9a913ee86d65bbcc19dd3ba53b9121c93daea8ae52666ba15","name":"Alexander Kostas","registered_at":"2026-06-15T03:05:46Z","symbol":"NIM0662368","token_address":"0xd18e9f93eb807b9cbeb33c9577c8089125b242d9","type":"artist","uuid":"d6af7834-04fd-48e3-a588-d3b2604b719d"}
album: Memories
  type: MusicAlbum
  date published: 2020-10-06
album: No return
  type: MusicAlbum
  date published: 2020-10-27
album: No Return
  type: MusicAlbum
  date published: 2020-10-27
album: No Return
  type: MusicAlbum
  date published: 2020-10-27
album: Peaceful Piano
  type: MusicAlbum
  date published: 2020-11-17
album: Peaceful Piano
  type: MusicAlbum
  date published: 2020-11-17
album: Silent Voice
  type: MusicAlbum
  date published: 2020-12-08
album: Silent Voice
  type: MusicAlbum
  date published: 2020-12-14
album: Silent Voice
  type: MusicAlbum
  date published: 2020-12-14
album: The Clouds
  type: MusicAlbum
  date published: 2020-12-29
album: The Clouds
  type: MusicAlbum
  date published: 2020-12-29
album: Wedding Song
  type: MusicAlbum
  date published: 2021-01-19
album: Wedding Song
  type: MusicAlbum
  date published: 2021-01-19
album: From Within
  type: MusicAlbum
  date published: 2021-02-09
album: From Within
  type: MusicAlbum
  date published: 2021-02-09
album: Dreaming of Tomorrow
  type: MusicAlbum
  date published: 2021-06-09
album: Dreaming of Tomorrow
  type: MusicAlbum
  date published: 2021-06-09
  track: Dreaming of Tomorrow
    type: MusicRecording
    duration: PT3M2S
    duration ms: 182986
    explicit: false
    by artist: Alexander Kostas
    in album: Dreaming of Tomorrow
      type: MusicAlbum
      date published: 2021-06-09
    isrc code: SEVOZ2101101
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T01:21:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9d3a640597f45334b5bec5b2731c663da6f87cbc55e54646ad9540a623da4776
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956656
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956656
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVOZ2101101
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T14:03:39Z
    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 0x9d3a640597f45334b5bec5b2731c663da6f87cbc55e54646ad9540a623da4776. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SEVOZ2101101.
      date published: 2026-07-04T14:03:39Z
    audio: Dreaming of Tomorrow
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.3
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.34
      additional property: Energy
        type: PropertyValue
        value: 0.006
      additional property: Speechiness
        type: PropertyValue
        value: 0.05
      additional property: Acousticness
        type: PropertyValue
        value: 0.991
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.954
      additional property: Liveness
        type: PropertyValue
        value: 0.115
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.272
      additional property: Loudness (dB)
        type: PropertyValue
        value: -28.493
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Einaudi
  type: MusicAlbum
  date published: 2021-09-07
album: Einaudi
  type: MusicAlbum
  date published: 2021-09-07
album: Unanswered Question
  type: MusicAlbum
  date published: 2021-11-16
album: Unanswered Question
  type: MusicAlbum
  date published: 2021-11-16
album: Room Next Door
  type: MusicAlbum
  date published: 2022-03-18
album: Room Next Door
  type: MusicAlbum
  date published: 2022-03-18