Johnson & Häggkvist
type: MusicGroup
genre: schlager
popularity: 4
followers: 275
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xca3e79de5e74d8ff54c03a988cb36251afb9d99f90346ae0933e9aa9cef9f9a1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954058
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954058
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/448a335e-e629-4bfb-b972-e36ffabc8db3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/448a335e-e629-4bfb-b972-e36ffabc8db3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/448a335e-e629-4bfb-b972-e36ffabc8db3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T06:34:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xca3e79de5e74d8ff54c03a988cb36251afb9d99f90346ae0933e9aa9cef9f9a1","name":"Johnson & Häggkvist","registered_at":"2026-06-16T13:28:12Z","symbol":"NIM1066312","token_address":"0xb63a4085f1ac4e9db39215743db295a0ae9f16b2","type":"artist","uuid":"448a335e-e629-4bfb-b972-e36ffabc8db3"}
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 0xca3e79de5e74d8ff54c03a988cb36251afb9d99f90346ae0933e9aa9cef9f9a1. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/448a335e-e629-4bfb-b972-e36ffabc8db3.json and https://artists.proofprofile.net/proofs/artist/448a335e-e629-4bfb-b972-e36ffabc8db3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T06:34:31Z
  text: {"copyright_id":"0xca3e79de5e74d8ff54c03a988cb36251afb9d99f90346ae0933e9aa9cef9f9a1","name":"Johnson & Häggkvist","registered_at":"2026-06-16T13:28:12Z","symbol":"NIM1066312","token_address":"0xb63a4085f1ac4e9db39215743db295a0ae9f16b2","type":"artist","uuid":"448a335e-e629-4bfb-b972-e36ffabc8db3"}
album: One Love
  type: MusicAlbum
  date published: 2008-01-01
  track: One Love
    type: MusicRecording
    duration: PT3M5S
    duration ms: 185973
    explicit: false
    by artist: Johnson & Häggkvist
    in album: One Love
      type: MusicAlbum
      date published: 2008-01-01
    genre: schlager
    isrc code: SEUM70800539
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T20:31:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe622c97a81e88769e11735680670a7ecc327d5ca39cb7aa45a83ed3413d542cf
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956620
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956620
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEUM70800539
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T07:11:13Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe622c97a81e88769e11735680670a7ecc327d5ca39cb7aa45a83ed3413d542cf. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/SEUM70800539.
      date published: 2026-07-04T07:11:13Z
    audio: One Love
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 110.04
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.444
      additional property: Energy
        type: PropertyValue
        value: 0.83
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.008
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.093
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.285
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.469
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Lucky Star
  type: MusicAlbum
  date published: 2008-01-15