Antony Costa
type: MusicGroup
description: Antony Daniel Costa (born 23 June 1981)Unreality TV biography is an English singer and songwriter. He is a member of the boy band Blue. Early life Costa was born in Edgware, North London. Costa atte
popularity: 8
followers: 5523
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x4cd002207bd481a2cd32291b67bfea933146833f92ee776bb7d220edbf2786e6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/81992314-74d6-47d1-85a9-1f00341c88a9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/81992314-74d6-47d1-85a9-1f00341c88a9.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/81992314-74d6-47d1-85a9-1f00341c88a9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd002207bd481a2cd32291b67bfea933146833f92ee776bb7d220edbf2786e6. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81992314-74d6-47d1-85a9-1f00341c88a9.json and https://artists.proofprofile.net/proofs/artist/81992314-74d6-47d1-85a9-1f00341c88a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x4cd002207bd481a2cd32291b67bfea933146833f92ee776bb7d220edbf2786e6","name":"Antony Costa","registered_at":"2026-06-17T10:45:04Z","symbol":"NIM1370925","token_address":"0x67aadefe66fe4bf70c696e88969bbc3e7ea0e3f9","type":"artist","uuid":"81992314-74d6-47d1-85a9-1f00341c88a9"}
album: Heart Full Of Soul
  type: MusicAlbum
  date published: 2006
  track: Do You Ever Think Of Me
    type: MusicRecording
    duration: PT3M19S
    duration ms: 199253
    explicit: false
    by artist: Antony Costa
    in album: Heart Full Of Soul
      type: MusicAlbum
      date published: 2006
    isrc code: GBCVW0600009
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T22:07:13Z
    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 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 0x8c6000271645dbebb75ce41f2766afa99cc2ed6bfe72661161cb668f6c011083. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GBCVW0600009.
      date published: 2026-07-18T22:07:13Z
    audio: Do You Ever Think Of Me
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
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      additional property: Musical Key
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
        type: PropertyValue
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      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.286
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.296
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Do You Ever Think Of Me (4 track)
  type: MusicAlbum
  date published: 2006-01-01
album: Do You Ever Think Of Me
  type: MusicAlbum
  date published: 2006-01-01
album: Heart Full of Soul
  type: MusicAlbum
  date published: 2011-02-28