Fred Cheung
type: MusicGroup
genre: cantopop
popularity: 11
followers: 535
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8723ac3d2a96b156b76b197e95d694f045b1d563ecd29db8489484abacbea1cb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953807
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953807
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e5970365-8923-4a54-a810-fbdc79ea5d74.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e5970365-8923-4a54-a810-fbdc79ea5d74.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e5970365-8923-4a54-a810-fbdc79ea5d74
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T16:39:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8723ac3d2a96b156b76b197e95d694f045b1d563ecd29db8489484abacbea1cb","name":"Fred Cheung","registered_at":"2026-06-15T04:46:02Z","symbol":"NIM0686300","token_address":"0xafb0858b0de179ee64142e333afb791060048118","type":"artist","uuid":"e5970365-8923-4a54-a810-fbdc79ea5d74"}
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 0x8723ac3d2a96b156b76b197e95d694f045b1d563ecd29db8489484abacbea1cb. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5970365-8923-4a54-a810-fbdc79ea5d74.json and https://artists.proofprofile.net/proofs/artist/e5970365-8923-4a54-a810-fbdc79ea5d74.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T16:39:18Z
  text: {"copyright_id":"0x8723ac3d2a96b156b76b197e95d694f045b1d563ecd29db8489484abacbea1cb","name":"Fred Cheung","registered_at":"2026-06-15T04:46:02Z","symbol":"NIM0686300","token_address":"0xafb0858b0de179ee64142e333afb791060048118","type":"artist","uuid":"e5970365-8923-4a54-a810-fbdc79ea5d74"}
album: 音樂傳盛
  type: MusicAlbum
  date published: 2021-03-19
album: 福星高照
  type: MusicAlbum
  date published: 2024-12-24
album: STEP
  type: MusicAlbum
  date published: 2014-12-05
  track: I Don't Care
    type: MusicRecording
    duration: PT4M9S
    duration ms: 249493
    explicit: false
    by artist: Stephanie Ho
    in album: STEP
      type: MusicAlbum
      date published: 2014-12-05
    genre: cantopop
    genre: c-pop
    isrc code: HKC631406065
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T19:44:01+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x35a022c9d7ee8ffc9034eaf96f15020da025b3c193272bcfcebbe1d79fcdc6f3
    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/HKC631406065
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:20:19Z
    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 0x35a022c9d7ee8ffc9034eaf96f15020da025b3c193272bcfcebbe1d79fcdc6f3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKC631406065.
      date published: 2026-07-08T03:20:19Z
    audio: I Don't Care
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.895
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.529
      additional property: Energy
        type: PropertyValue
        value: 0.556
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.088
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.147
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.27
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.087
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: 綿羊仔
    type: MusicRecording
    duration: PT3M56S
    duration ms: 236240
    explicit: false
    by artist: Stephanie Ho
    in album: STEP
      type: MusicAlbum
      date published: 2014-12-05
    genre: cantopop
    genre: c-pop
    isrc code: HKC631405992
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T19:29:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7deca295e2387902100a087df5c7aba94667e040e3005e604b8e4e8a11708558
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957124
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957124
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC631405992
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:53:27Z
    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 0x7deca295e2387902100a087df5c7aba94667e040e3005e604b8e4e8a11708558. 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/HKC631405992.
      date published: 2026-07-08T03:53:27Z
    audio: 綿羊仔
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 131.606
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.798
      additional property: Energy
        type: PropertyValue
        value: 0.415
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.335
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: 線上情歌
album: 張子丰 Fred Cheung 1880 Eighteen Eighty
album: 保持通話
album: 最後一次 The Last Time - 音樂永續 作品
album: 完美情人
album: 痴心情長劍
album: 爛片王
album: 29
album: 也許我們倦了吧
album: 拖
album: 推銷員之死
album: 輪迴
album: 天國與地獄
album: 上車
album: 最後宣言
album: 1880
album: 福星高照迎新春

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.126

Valence (Positivity)
type: PropertyValue
value: 0.651

Loudness (dB)
type: PropertyValue
value: -11.713

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

線上情歌
type: MusicAlbum
date published: 2014-11-03

張子丰 Fred Cheung 1880 Eighteen Eighty
type: MusicAlbum
date published: 2014-02-09

保持通話
type: MusicAlbum
date published: 2022-04-19

最後一次 The Last Time - 音樂永續 作品
type: MusicAlbum
date published: 2021-01-19

完美情人
type: MusicAlbum
date published: 2019-09-23

痴心情長劍
type: MusicAlbum
date published: 2019-02-11

爛片王
type: MusicAlbum
date published: 2018-05-04

29
type: MusicAlbum
date published: 2018-01-10
track: 死亡三部曲：天國與地獄
  type: MusicRecording
  duration: PT4M22S
  duration ms: 262741
  explicit: false
  by artist: Fred Cheung
  by artist: Endy Chow
  by artist: Goro Wong
  in album: 29
    type: MusicAlbum
    date published: 2018-01-10
  genre: cantopop
  isrc code: HKC631506284
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-25T01:59:25+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9bf1434e9412ed24eec29e27aaf605a799d8d0b476683021b8643d45f6e8f314
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956891
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956891
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC631506284
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T07:16:32Z
  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 0x9bf1434e9412ed24eec29e27aaf605a799d8d0b476683021b8643d45f6e8f314. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/HKC631506284.
    date published: 2026-07-06T07:16:32Z
  audio: 死亡三部曲：天國與地獄
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 153.361
    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.493
    additional property: Energy
      type: PropertyValue
      value: 0.465
    additional property: Speechiness
      type: PropertyValue
      value: 0.029
    additional property: Acousticness
      type: PropertyValue
      value: 0.242
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.34
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.326
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.677
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 死亡三部曲：輪迴
  type: MusicRecording
  duration: PT4M15S
  duration ms: 255460
  explicit: false
  by artist: Fred Cheung
  by artist: Endy Chow
  by artist: Goro Wong
  in album: 29
    type: MusicAlbum
    date published: 2018-01-10
  genre: cantopop
  isrc code: HKC631506424
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T22:53:30+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd6b44d5b0abab07b75657778bd8018b420fa3bdbaa938ddd0c22aa55320a377c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957124
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957124
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC631506424
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:53:27Z
  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 0xd6b44d5b0abab07b75657778bd8018b420fa3bdbaa938ddd0c22aa55320a377c. 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/HKC631506424.
    date published: 2026-07-08T03:53:27Z
  audio: 死亡三部曲：輪迴
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 101.704
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.539
    additional property: Energy
      type: PropertyValue
      value: 0.507
    additional property: Speechiness
      type: PropertyValue
      value: 0.029
    additional property: Acousticness
      type: PropertyValue
      value: 0.018
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.098
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.272
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.372
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 死亡三部曲：推銷員之死
  type: MusicRecording
  duration: PT6M10S
  duration ms: 370115
  explicit: false
  by artist: Fred Cheung
  by artist: Endy Chow
  by artist: Goro Wong
  in album: 29
    type: MusicAlbum
    date published: 2018-01-10
  genre: cantopop
  isrc code: HKC631606550
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-23T21:37:01+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfed81cb1f358a7baf8885f06f624bc36512dff4729f0d8bc3b2006cd253dee53
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: 死亡三部曲：推銷員之死

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956304

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956304

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC631606550

OTSTimestamp
type: PropertyValue
value: 2026-07-02T03:55:08Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed81cb1f358a7baf8885f06f624bc36512dff4729f0d8bc3b2006cd253dee53. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKC631606550.
date published: 2026-07-02T03:55:08Z

死亡三部曲：推銷員之死
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 146.629
additional property: Musical Key
  type: PropertyValue
  value: 10
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.501
additional property: Energy
  type: PropertyValue
  value: 0.701
additional property: Speechiness
  type: PropertyValue
  value: 0.037
additional property: Acousticness
  type: PropertyValue
  value: 0.387
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.058
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.604
additional property: Loudness (dB)
  type: PropertyValue
  value: -9.959
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Major

也許我們倦了吧
type: MusicAlbum
date published: 2017-03-22
track: 也許我們倦了吧
  type: MusicRecording
  duration: PT3M38S
  duration ms: 218690
  explicit: false
  by artist: Fred Cheung
  in album: 也許我們倦了吧
    type: MusicAlbum
    date published: 2017-03-22
  genre: cantopop
  isrc code: HKC631706908
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T10:38:17+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2e6489acd0a5c633e1f819867f35a6cf0ab9744e8e489de69c956ebeb5896534
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959123
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959123
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC631706908
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T11:35:32Z
  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
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拖
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推銷員之死
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輪迴
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天國與地獄
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上車
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最後宣言
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1880
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福星高照迎新春
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