Stephen Chang
type: MusicGroup
genre: rocksteady
popularity: 3
followers: 220
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x66873fc7efb3ed68d8c7b58f7d673c97620ceb78d67ad67ee2ebe01f31da7160
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c374145d-5f96-4001-8a28-e74c25f22135.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c374145d-5f96-4001-8a28-e74c25f22135.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c374145d-5f96-4001-8a28-e74c25f22135
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x66873fc7efb3ed68d8c7b58f7d673c97620ceb78d67ad67ee2ebe01f31da7160","name":"Stephen Chang","registered_at":"2026-06-20T20:14:52Z","symbol":"NIM1701351","token_address":"0xd5b92a9e46a27827e180bb89fb4d83cc3802a48e","type":"artist","uuid":"c374145d-5f96-4001-8a28-e74c25f22135"}
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 0x66873fc7efb3ed68d8c7b58f7d673c97620ceb78d67ad67ee2ebe01f31da7160. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c374145d-5f96-4001-8a28-e74c25f22135.json and https://artists.proofprofile.net/proofs/artist/c374145d-5f96-4001-8a28-e74c25f22135.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0x66873fc7efb3ed68d8c7b58f7d673c97620ceb78d67ad67ee2ebe01f31da7160","name":"Stephen Chang","registered_at":"2026-06-20T20:14:52Z","symbol":"NIM1701351","token_address":"0xd5b92a9e46a27827e180bb89fb4d83cc3802a48e","type":"artist","uuid":"c374145d-5f96-4001-8a28-e74c25f22135"}
album: Always Together
  type: MusicAlbum
  date published: 2016-05-06
  track: Always Together
    type: MusicRecording
    duration: PT2M48S
    duration ms: 168454
    explicit: false
    by artist: Stephen Chang
    in album: Always Together
      type: MusicAlbum
      date published: 2016-05-06
    genre: rocksteady
    isrc code: JPR221300673
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T22:59:21+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa2319d300a50fb12fb85e6583905d0ad7f06648cce46de27f2c5b6d967c6ad1a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958942
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958942
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPR221300673
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T02:01:08Z
    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 0xa2319d300a50fb12fb85e6583905d0ad7f06648cce46de27f2c5b6d967c6ad1a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:01:08Z), 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/JPR221300673.
      date published: 2026-07-21T02:01:08Z
    audio: Always Together
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 97.305
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.732
      additional property: Energy
        type: PropertyValue
        value: 0.688
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.797
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.08
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.966
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.501
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor