Christina Metaxa
type: MusicGroup
popularity: 2
followers: 826
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8ee267b6d6fcf549ae09f8a41f9fef0e39cbc872511b68dcc3cf0a1444538b58
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/e8cf9f89-3676-48ef-943c-6a614c8dafba.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e8cf9f89-3676-48ef-943c-6a614c8dafba.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e8cf9f89-3676-48ef-943c-6a614c8dafba
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8ee267b6d6fcf549ae09f8a41f9fef0e39cbc872511b68dcc3cf0a1444538b58","name":"Christina Metaxa","registered_at":"2026-06-21T09:46:27Z","symbol":"NIM1891171","token_address":"0x28508d03c0fb0d149c2b7569d2639944989e21af","type":"artist","uuid":"e8cf9f89-3676-48ef-943c-6a614c8dafba"}
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 0x8ee267b6d6fcf549ae09f8a41f9fef0e39cbc872511b68dcc3cf0a1444538b58. 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/e8cf9f89-3676-48ef-943c-6a614c8dafba.json and https://artists.proofprofile.net/proofs/artist/e8cf9f89-3676-48ef-943c-6a614c8dafba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x8ee267b6d6fcf549ae09f8a41f9fef0e39cbc872511b68dcc3cf0a1444538b58","name":"Christina Metaxa","registered_at":"2026-06-21T09:46:27Z","symbol":"NIM1891171","token_address":"0x28508d03c0fb0d149c2b7569d2639944989e21af","type":"artist","uuid":"e8cf9f89-3676-48ef-943c-6a614c8dafba"}
album: Firefly (Eurovision 2009)
  type: MusicAlbum
  date published: 2009-01-01
album: Firefly (Eurovision 2009_CYPRUS ENTRY)
  type: MusicAlbum
  date published: 2009-04-06
  track: Firefly - Eurovision 2009_CYPRUS ENTRY
    type: MusicRecording
    duration: PT3M1S
    duration ms: 181960
    explicit: false
    by artist: Christina Metaxa
    in album: Firefly (Eurovision 2009_CYPRUS ENTRY)
      type: MusicAlbum
      date published: 2009-04-06
    isrc code: GRSO10900120
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T07:45:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9e52061091d34a31f662b8888cb75008889cf246056c42c88b8664ed8fd910cc
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958846
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958846
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRSO10900120
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T10:46:58Z
    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 0x9e52061091d34a31f662b8888cb75008889cf246056c42c88b8664ed8fd910cc. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:46:58Z), 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/GRSO10900120.
      date published: 2026-07-20T10:46:58Z
    audio: Firefly - Eurovision 2009_CYPRUS ENTRY
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 102.05
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.567
      additional property: Energy
        type: PropertyValue
        value: 0.425
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.424
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.059
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.338
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.449
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major