Denis Chang
type: MusicGroup
description: Denis Chang Khen-lee, CBE, KC, SC, JP (born 15 February 1944, Sabah, Malaysia —) is a barrister and politician from Hong Kong. He was previously an appointed unofficial member of the Executive Coun
popularity: 5
followers: 372
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa16a7dc04f0d3d422a225cad8880ea39b3c37bf1552012c4363652d30207d350
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954058
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954058
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/450a5c3a-e62e-41b1-877f-36b5378a5cb6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/450a5c3a-e62e-41b1-877f-36b5378a5cb6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/450a5c3a-e62e-41b1-877f-36b5378a5cb6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T06:34:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa16a7dc04f0d3d422a225cad8880ea39b3c37bf1552012c4363652d30207d350","name":"Denis Chang","registered_at":"2026-06-16T13:41:08Z","symbol":"NIM1069399","token_address":"0xa286c69b9e2dbda326a486e2cb03f7cef4e63af5","type":"artist","uuid":"450a5c3a-e62e-41b1-877f-36b5378a5cb6"}
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 0xa16a7dc04f0d3d422a225cad8880ea39b3c37bf1552012c4363652d30207d350. 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/450a5c3a-e62e-41b1-877f-36b5378a5cb6.json and https://artists.proofprofile.net/proofs/artist/450a5c3a-e62e-41b1-877f-36b5378a5cb6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xa16a7dc04f0d3d422a225cad8880ea39b3c37bf1552012c4363652d30207d350","name":"Denis Chang","registered_at":"2026-06-16T13:41:08Z","symbol":"NIM1069399","token_address":"0xa286c69b9e2dbda326a486e2cb03f7cef4e63af5","type":"artist","uuid":"450a5c3a-e62e-41b1-877f-36b5378a5cb6"}
album: Nature Boy
  type: MusicAlbum
  date published: 2007-07-16
album: Nature Boy
  type: MusicAlbum
  date published: 2007-07-16
album: Deeper Than You Think
  type: MusicAlbum
  date published: 2010-01-04
track: Them There Eyes

Them There Eyes
type: MusicRecording
duration: PT2M49S
duration ms: 169813
explicit: false
by artist: Denis Chang
by artist: Fléche D'Or
in album: Django Festival 5
  type: MusicAlbum
  date published: 2007-06-18
isrc code: NOX9X3298204
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T11:03:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x20474366e62a17ef6ca37d7c2acdaaed7c454d7ec465982e4aa3fd33a7ceb185
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOX9X3298204
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20474366e62a17ef6ca37d7c2acdaaed7c454d7ec465982e4aa3fd33a7ceb185. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOX9X3298204.
  date published: 2026-07-08T03:53:27Z
audio: Them There Eyes
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 152.807
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.724
  additional property: Energy
    type: PropertyValue
    value: 0.501
  additional property: Speechiness
    type: PropertyValue
    value: 0.212
  additional property: Acousticness
    type: PropertyValue
    value: 0.169
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.81
  additional property: Liveness
    type: PropertyValue
    value: 0.076
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.774
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.412
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major