Kamar Biru
type: MusicGroup
genre: indonesian indie
popularity: 4
followers: 336
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x452dc48f7d674b9a689496e5728ba183015ba946166597f9dc53464b35878bfb
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/6921b5c1-6a04-49ab-b7d7-b09674f5d218.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6921b5c1-6a04-49ab-b7d7-b09674f5d218.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6921b5c1-6a04-49ab-b7d7-b09674f5d218
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x452dc48f7d674b9a689496e5728ba183015ba946166597f9dc53464b35878bfb","name":"Kamar Biru","registered_at":"2026-06-17T02:17:03Z","symbol":"NIM1249758","token_address":"0xd165498989ee890de556de105c2a6e1c76b0fd21","type":"artist","uuid":"6921b5c1-6a04-49ab-b7d7-b09674f5d218"}
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 0x452dc48f7d674b9a689496e5728ba183015ba946166597f9dc53464b35878bfb. 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/6921b5c1-6a04-49ab-b7d7-b09674f5d218.json and https://artists.proofprofile.net/proofs/artist/6921b5c1-6a04-49ab-b7d7-b09674f5d218.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x452dc48f7d674b9a689496e5728ba183015ba946166597f9dc53464b35878bfb","name":"Kamar Biru","registered_at":"2026-06-17T02:17:03Z","symbol":"NIM1249758","token_address":"0xd165498989ee890de556de105c2a6e1c76b0fd21","type":"artist","uuid":"6921b5c1-6a04-49ab-b7d7-b09674f5d218"}
album: Alternate Ending
  type: MusicAlbum
  date published: 2020-06-16
album: Love You Leave You Behind
  type: MusicAlbum
  date published: 2020-08-14
album: Love You Leave You Behind
  type: MusicAlbum
  date published: 2020-08-14
album: 32nd of December
  type: MusicAlbum
  date published: 2021-04-02
album: Arana Arusha
  type: MusicAlbum
  date published: 2021-10-15
album: Begitu Saja
  type: MusicAlbum
  date published: 2022-07-29
album: Yes (not) Mine
  type: MusicAlbum
  date published: 2024-02-02
  track: Yes (not) Mine
    type: MusicRecording
    duration: PT4M29S
    duration ms: 269440
    explicit: false
    by artist: Kamar Biru
    in album: Yes (not) Mine
      type: MusicAlbum
      date published: 2024-02-02
    genre: indonesian indie
    isrc code: QM4TW2422702
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T07:36:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9b44aa74022ddc45582924345be3c5c87bcc1b74c60c5c878d21f4221791e2eb
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958544
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958544
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2422702
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T12:14:37Z
    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 0x9b44aa74022ddc45582924345be3c5c87bcc1b74c60c5c878d21f4221791e2eb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM4TW2422702.
      date published: 2026-07-18T12:14:37Z
    audio: Yes (not) Mine
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.773
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.557
      additional property: Energy
        type: PropertyValue
        value: 0.499
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.604
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.536
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.477
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.967
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major