The Callas
type: MusicGroup
popularity: 13
followers: 3443
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x79436d2bc945d56a51e2aa56433ac519d2cc4f7b36f86367f663f868d3e1dffa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953687
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953687
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/69136591-8593-426a-ab05-d01de19a82e3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/69136591-8593-426a-ab05-d01de19a82e3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/69136591-8593-426a-ab05-d01de19a82e3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T20:19:15Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x79436d2bc945d56a51e2aa56433ac519d2cc4f7b36f86367f663f868d3e1dffa","name":"The Callas","registered_at":"2026-06-14T15:27:52Z","symbol":"NIM0495846","token_address":"0x95c12e6d6f810f0251e9d011cc891b0686dd57ac","type":"artist","uuid":"69136591-8593-426a-ab05-d01de19a82e3"}
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 0x79436d2bc945d56a51e2aa56433ac519d2cc4f7b36f86367f663f868d3e1dffa. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69136591-8593-426a-ab05-d01de19a82e3.json and https://artists.proofprofile.net/proofs/artist/69136591-8593-426a-ab05-d01de19a82e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T22:00:24Z
  text: {"copyright_id":"0x79436d2bc945d56a51e2aa56433ac519d2cc4f7b36f86367f663f868d3e1dffa","name":"The Callas","registered_at":"2026-06-14T15:27:52Z","symbol":"NIM0495846","token_address":"0x95c12e6d6f810f0251e9d011cc891b0686dd57ac","type":"artist","uuid":"69136591-8593-426a-ab05-d01de19a82e3"}
album: DIY Or DIE
  type: MusicAlbum
  date published: 2007-11-01
album: DIY Or DIE
  type: MusicAlbum
  date published: 2007-11-01
album: The Callas
  type: MusicAlbum
  date published: 2009-04-01
album: The Callas
  type: MusicAlbum
  date published: 2009-04-01
album: Objekt
  type: MusicAlbum
  date published: 2011-01-30
album: Objekt
  type: MusicAlbum
  date published: 2011-11-01
album: Am I Vertical?
  type: MusicAlbum
  date published: 2013-11-15
album: Am I Vertical?
  type: MusicAlbum
  date published: 2013-11-15
album: Am I Vertical?
  type: MusicAlbum
  date published: 2013-11-15
album: Am I Vertical?
  type: MusicAlbum
  date published: 2013-11-18
album: Half Kiss Half Pain
  type: MusicAlbum
  date published: 2016-01-29
album: Half Kiss Half Pain
  type: MusicAlbum
  date published: 2016-01-29
album: Acid Books
  type: MusicAlbum
  date published: 2018-07-06
album: Trouble and Desire
  type: MusicAlbum
  date published: 2018-10-26
album: Την Είδα να Πέφτει
  type: MusicAlbum
  date published: 2020-10-09
album: Είμαι Ένα Ξενοδοχείο
  type: MusicAlbum
  date published: 2020-10-23
  track: Τί Σκέφτεσαι;
    type: MusicRecording
    duration: PT3M58S
    duration ms: 238829
    explicit: false
    by artist: The Callas
    in album: Είμαι Ένα Ξενοδοχείο
      type: MusicAlbum
      date published: 2020-10-23
    isrc code: GRIE12000092
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T15:16:51+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9389c5c4c27446388e72f2cb08684775c658da887f302ee9bac9b9aa4e6b24aa
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958571
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958571
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRIE12000092
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T15:39:25Z
    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 0x9389c5c4c27446388e72f2cb08684775c658da887f302ee9bac9b9aa4e6b24aa. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/GRIE12000092.
      date published: 2026-07-18T15:39:25Z
    audio: Τί Σκέφτεσαι;
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.152
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.533
      additional property: Energy
        type: PropertyValue
        value: 0.534
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.026
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.391
      additional property: Liveness
        type: PropertyValue
        value: 0.177
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.515
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.572
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Plisi Stomahou
  type: MusicAlbum
  date published: 2024-06-14
album: AGMSOURMLK
  type: MusicAlbum
  date published: 2024-09-13
album: Anatoli
  type: MusicAlbum
  date published: 2024-09-27