Mark Chan
type: MusicGroup
genre: cantopop
description: Mark Chan (born 1958) is a Singaporean composer, recording artist, singer, instrumentalist, poet, and painter. He studied fine arts at the Edinburgh College of ArtLeaving on a high note with Opiume fo
popularity: 5
followers: 249
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/9f6757c2-b4c5-4081-ab7b-ea22fcda7e74.json
additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e92d05d6b0ccc68157a824077fb358b0aca2ce8a1de601658e65ba15a1fce2f. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f6757c2-b4c5-4081-ab7b-ea22fcda7e74.json and https://artists.proofprofile.net/proofs/artist/9f6757c2-b4c5-4081-ab7b-ea22fcda7e74.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
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album: Doug & MarkChan - Friendzone Man
  type: MusicAlbum
  date published: 2020-05-26
album: Friendzone Man
  type: MusicAlbum
  date published: 2020-05-26
  track: Friendzone Man
    type: MusicRecording
    duration: PT4M2S
    duration ms: 242000
    explicit: false
    by artist: Mark Chan
    in album: Friendzone Man
      type: MusicAlbum
      date published: 2020-05-26
    genre: cantopop
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAET2034600
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T16:14:30Z
    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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8496deb847102beed4ada8cd8dd20897542e4ced3e597997ac5a11f9fb7b3e5a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAET2034600.
      date published: 2026-07-16T16:14:30Z
    audio: Friendzone Man
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      additional property: Time Signature
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      additional property: Danceability
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Instrumentalness
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      additional property: Liveness
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      additional property: Valence (Positivity)
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        type: PropertyValue
        value: -12.868
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sunset
  type: MusicAlbum
  date published: 2024-01-31
album: Trip T.F.O
  type: MusicAlbum
  date published: 2024-05-16
album: 約你在南丫島發呆
  type: MusicAlbum
  date published: 2024-09-16
  track: 約你在南丫島發呆
    type: MusicRecording
    duration: PT3M37S
    duration ms: 217391
    explicit: false
    by artist: Mark Chan
    in album: 約你在南丫島發呆
      type: MusicAlbum
      date published: 2024-09-16
    genre: cantopop
    isrc code: HKC992429736
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    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC992429736
    additional property: OTSTimestamp
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    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 0xf574f3113574e6b43caf62a07af5c1c434acbd02b3e5d11f8cf1746b79d15edb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HKC992429736.
      date published: 2026-07-05T18:48:28Z
    audio: 約你在南丫島發呆
      type: AudioObject
      additional property: Tempo (BPM)
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        value: 137.985
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        value: 2
      additional property: Mode (Major/Minor)
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        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.705
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        type: PropertyValue
        value: 0.6
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: 戀愛漫遊
album: 哥布林模式

Speechiness
type: PropertyValue
value: 0.046

Acousticness
type: PropertyValue
value: 0.42

Instrumentalness
type: PropertyValue
value: 0.316

Liveness
type: PropertyValue
value: 0.089

Valence (Positivity)
type: PropertyValue
value: 0.273

Loudness (dB)
type: PropertyValue
value: -7.792

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

戀愛漫遊
type: MusicAlbum
date published: 2025-01-03
track: 戀愛漫遊
  type: MusicRecording
  duration: PT3M24S
  duration ms: 204041
  explicit: false
  by artist: Mark Chan
  in album: 戀愛漫遊
    type: MusicAlbum
    date published: 2025-01-03
  genre: cantopop
  isrc code: HKC992529701
  additional property: CopyrightID
  additional property: CopyrightStatus
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    value: registered
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    value: 2026-07-04T11:25:36+00:00
  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC992529701
  additional property: OTSTimestamp
    type: PropertyValue
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  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 0x0583a69a1aecd8345132422d39a9187cae8897c4cefa5d6f462fcf76ea412b63. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HKC992529701.
    date published: 2026-07-05T01:12:41Z
  audio: 戀愛漫遊
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 145.862
    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: 0.56
    additional property: Energy
      type: PropertyValue
      value: 0.761
    additional property: Speechiness
      type: PropertyValue
      value: 0.049
    additional property: Acousticness
      type: PropertyValue
      value: 0.153
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.068
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.441
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.031
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
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哥布林模式
type: MusicAlbum
date published: 2025-04-20