Classmate Journal
type: MusicGroup
genre: indonesian indie
popularity: 5
followers: 2709
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcac4e8c9a9bac807ba59f6354ea35112abb5d19fb9827e013ccf2698724762a7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e52863b8-38b8-4f6c-961d-7b6716213199.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e52863b8-38b8-4f6c-961d-7b6716213199.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e52863b8-38b8-4f6c-961d-7b6716213199
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcac4e8c9a9bac807ba59f6354ea35112abb5d19fb9827e013ccf2698724762a7","name":"Classmate Journal","registered_at":"2026-06-21T08:19:15Z","symbol":"NIM1872764","token_address":"0xdce724150e8edec5b4fbc01e978e67a05a129788","type":"artist","uuid":"e52863b8-38b8-4f6c-961d-7b6716213199"}
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 0xcac4e8c9a9bac807ba59f6354ea35112abb5d19fb9827e013ccf2698724762a7. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e52863b8-38b8-4f6c-961d-7b6716213199.json and https://artists.proofprofile.net/proofs/artist/e52863b8-38b8-4f6c-961d-7b6716213199.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0xcac4e8c9a9bac807ba59f6354ea35112abb5d19fb9827e013ccf2698724762a7","name":"Classmate Journal","registered_at":"2026-06-21T08:19:15Z","symbol":"NIM1872764","token_address":"0xdce724150e8edec5b4fbc01e978e67a05a129788","type":"artist","uuid":"e52863b8-38b8-4f6c-961d-7b6716213199"}
album: Journey
  type: MusicAlbum
  date published: 2014-02-07
album: Tempat Yang Indah
  type: MusicAlbum
  date published: 2016-04-28
  track: Tempat Yang Indah
    type: MusicRecording
    duration: PT3M43S
    duration ms: 223983
    explicit: false
    by artist: Classmate Journal
    in album: Tempat Yang Indah
      type: MusicAlbum
      date published: 2016-04-28
    genre: indonesian indie
    isrc code: USDY41607793
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T13:34:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9eaba7751a709fd7802f3c9a45637f56e4288e3ab807918421d7c44b69c2bbde
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958742
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958742
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41607793
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T14:09:34Z
    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 0x9eaba7751a709fd7802f3c9a45637f56e4288e3ab807918421d7c44b69c2bbde. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USDY41607793.
      date published: 2026-07-19T14:09:34Z
    audio: Tempat Yang Indah
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 98.041
      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: 0.766
      additional property: Energy
        type: PropertyValue
        value: 0.507
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.649
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.023
      additional property: Liveness
        type: PropertyValue
        value: 0.078
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.679
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.124
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 2.0
  type: MusicAlbum
  date published: 2018-02-18
album: Sandar
  type: MusicAlbum
  date published: 2023-10-06
album: SUMMER SKIES
  type: MusicAlbum
  date published: 2023-11-10