Smooth Key
type: MusicGroup
popularity: 3
followers: 59
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xad69d59f089101eb9dc8db3851dbbe99bdb9ea60775edad03aa374cec7d3d09f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9afd4306-f5ec-4806-86a5-c9d1172b500d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9afd4306-f5ec-4806-86a5-c9d1172b500d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9afd4306-f5ec-4806-86a5-c9d1172b500d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xad69d59f089101eb9dc8db3851dbbe99bdb9ea60775edad03aa374cec7d3d09f","name":"Smooth Key","registered_at":"2026-06-17T19:32:19Z","symbol":"NIM1496668","token_address":"0xe5d014110f2b2c0ac5b856711255aa78b0e1764f","type":"artist","uuid":"9afd4306-f5ec-4806-86a5-c9d1172b500d"}
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad69d59f089101eb9dc8db3851dbbe99bdb9ea60775edad03aa374cec7d3d09f. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9afd4306-f5ec-4806-86a5-c9d1172b500d.json and https://artists.proofprofile.net/proofs/artist/9afd4306-f5ec-4806-86a5-c9d1172b500d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xad69d59f089101eb9dc8db3851dbbe99bdb9ea60775edad03aa374cec7d3d09f","name":"Smooth Key","registered_at":"2026-06-17T19:32:19Z","symbol":"NIM1496668","token_address":"0xe5d014110f2b2c0ac5b856711255aa78b0e1764f","type":"artist","uuid":"9afd4306-f5ec-4806-86a5-c9d1172b500d"}
album: Wake me up (Piano Version)
  type: MusicAlbum
  date published: 2021-03-21
album: Apologize (Piano Version)
  type: MusicAlbum
  date published: 2021-03-29
album: Perfect (Piano Version)
  type: MusicAlbum
  date published: 2021-04-01
album: Shape of you (Piano Version)
  type: MusicAlbum
  date published: 2021-04-05
album: Lush Life (Piano Version)
  type: MusicAlbum
  date published: 2021-04-12
album: Cry me a river (Piano Version)
  type: MusicAlbum
  date published: 2021-04-15
album: Without You (Piano Version)
  type: MusicAlbum
  date published: 2021-04-19
album: Wicked Game (Piano Version)
  type: MusicAlbum
  date published: 2021-04-19
  track: Wicked Game - Piano version
    type: MusicRecording
    duration: PT4M7S
    duration ms: 247733
    explicit: false
    by artist: Smooth Key
    in album: Wicked Game (Piano Version)
      type: MusicAlbum
      date published: 2021-04-19
    isrc code: SE5XG2123701
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T08:14:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xea65885666de532d390c016beb82dd65efff287db4e4d06bdbfff861ca08616e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959114
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959114
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5XG2123701
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T08:41:42Z
    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 0xea65885666de532d390c016beb82dd65efff287db4e4d06bdbfff861ca08616e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/SE5XG2123701.
      date published: 2026-07-22T08:41:42Z
    audio: Wicked Game - Piano version
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 169.944
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.445
      additional property: Energy
        type: PropertyValue
        value: 0.072
      additional property: Speechiness
        type: PropertyValue
        value: 0.05
      additional property: Acousticness
        type: PropertyValue
        value: 0.969
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.937
      additional property: Liveness
        type: PropertyValue
        value: 0.11
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.207
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.079
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Life on Mars (Piano Version)
  type: MusicAlbum
  date published: 2021-04-22
album: Photograph (Piano Version)
  type: MusicAlbum
  date published: 2021-04-26
album: Shape of my Heart (Piano Version)
  type: MusicAlbum
  date published: 2021-04-29
album: Fields of Gold (Piano Version)
  type: MusicAlbum
  date published: 2021-04-29