Polar Akin
type: MusicGroup
popularity: 5
followers: 50
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcc0bd969d9c21ba1c57b3c52689550cfda9a86b85edacc3d845124013cdb329b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5a5663cd-057a-42ae-90cf-85e799c655ea.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5a5663cd-057a-42ae-90cf-85e799c655ea.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5a5663cd-057a-42ae-90cf-85e799c655ea
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcc0bd969d9c21ba1c57b3c52689550cfda9a86b85edacc3d845124013cdb329b","name":"Polar Akin","registered_at":"2026-06-16T20:59:48Z","symbol":"NIM1174081","token_address":"0x13013fd3b428d32b196bf1ca160fe5bb223efb68","type":"artist","uuid":"5a5663cd-057a-42ae-90cf-85e799c655ea"}
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 0xcc0bd969d9c21ba1c57b3c52689550cfda9a86b85edacc3d845124013cdb329b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a5663cd-057a-42ae-90cf-85e799c655ea.json and https://artists.proofprofile.net/proofs/artist/5a5663cd-057a-42ae-90cf-85e799c655ea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xcc0bd969d9c21ba1c57b3c52689550cfda9a86b85edacc3d845124013cdb329b","name":"Polar Akin","registered_at":"2026-06-16T20:59:48Z","symbol":"NIM1174081","token_address":"0x13013fd3b428d32b196bf1ca160fe5bb223efb68","type":"artist","uuid":"5a5663cd-057a-42ae-90cf-85e799c655ea"}
album: Understand
  type: MusicAlbum
  date published: 2024-12-10
  track: Understand
    type: MusicRecording
    duration: PT4M3S
    duration ms: 243763
    explicit: true
    by artist: Polar Akin
    in album: Understand
      type: MusicAlbum
      date published: 2024-12-10
    isrc code: QZZ7S2419969
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T03:41:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbaf3d349841924033e95303a4f61b9efd827aa07f0f1abbd18fc3fc3fd96fe2a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958106
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958106
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7S2419969
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T05:35:13Z
    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 0xbaf3d349841924033e95303a4f61b9efd827aa07f0f1abbd18fc3fc3fd96fe2a. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZZ7S2419969.
      date published: 2026-07-15T05:35:13Z
    audio: Understand
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 79.97
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.563
      additional property: Energy
        type: PropertyValue
        value: 0.383
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.343
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.086
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.378
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.295
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major