徐远书
type: MusicGroup
genre: c-pop
genre: gufeng
genre: taiwanese pop
popularity: 7
followers: 267
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x46d34f058002b2b801ad2c65a951404d4cf3fe6834b79c000f6ed0f5234e8b78
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954134
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954134
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7e454d58-73e7-4907-95b5-3a236b66e271.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7e454d58-73e7-4907-95b5-3a236b66e271.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7e454d58-73e7-4907-95b5-3a236b66e271
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:41:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x46d34f058002b2b801ad2c65a951404d4cf3fe6834b79c000f6ed0f5234e8b78","name":"徐远书","registered_at":"2026-06-17T09:39:31Z","symbol":"NIM1355299","token_address":"0xae51163fcdb37e017ef30d72e113aba699ffcacf","type":"artist","uuid":"7e454d58-73e7-4907-95b5-3a236b66e271"}
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 0x46d34f058002b2b801ad2c65a951404d4cf3fe6834b79c000f6ed0f5234e8b78. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e454d58-73e7-4907-95b5-3a236b66e271.json and https://artists.proofprofile.net/proofs/artist/7e454d58-73e7-4907-95b5-3a236b66e271.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:41:05Z
  text: {"copyright_id":"0x46d34f058002b2b801ad2c65a951404d4cf3fe6834b79c000f6ed0f5234e8b78","name":"徐远书","registered_at":"2026-06-17T09:39:31Z","symbol":"NIM1355299","token_address":"0xae51163fcdb37e017ef30d72e113aba699ffcacf","type":"artist","uuid":"7e454d58-73e7-4907-95b5-3a236b66e271"}
album: 浮舟梦
  type: MusicAlbum
  date published: 2019-07-16
album: 浮舟梦
  type: MusicAlbum
  date published: 2019-07-16
album: 盗墓笔记·别离
  type: MusicAlbum
  date published: 2019-08-15
album: 纸上人间
  type: MusicAlbum
  date published: 2019-08-30
album: 纸上人间
  type: MusicAlbum
  date published: 2019-08-30
album: 自问自答
  type: MusicAlbum
  date published: 2020-05-12
album: 空叹
  type: MusicAlbum
  date published: 2020-05-29
album: 假装
  type: MusicAlbum
  date published: 2020-06-15
album: 整个秋末
  type: MusicAlbum
  date published: 2020-06-29
album: 尘埃
  type: MusicAlbum
  date published: 2020-07-30
album: 只想吻着你
  type: MusicAlbum
  date published: 2020-08-24
album: 念旧
  type: MusicAlbum
  date published: 2020-09-26
album: 醉饮长安
  type: MusicAlbum
  date published: 2020-12-12
album: 尘客梦
  type: MusicAlbum
  date published: 2021-01-16
album: 童话梦 (伴奏版)
  type: MusicAlbum
  date published: 2021-02-05
album: 童话梦
  type: MusicAlbum
  date published: 2021-02-05
album: 最后一句
  type: MusicAlbum
  date published: 2021-02-20
album: 空叹
  type: MusicAlbum
  date published: 2021-03-31
album: 无声坠落
  type: MusicAlbum
  date published: 2021-04-29
album: 归于人海
  type: MusicAlbum
  date published: 2021-05-11
album: 夜奔至启明（《东邻西厢》陈启明角色推广曲）
  type: MusicAlbum
  date published: 2021-06-13
album: 夜奔至启明（《东邻西厢》陈启明角色推广曲）
  type: MusicAlbum
  date published: 2021-06-13
album: 三月雪 (三月的雪四月的风六月的雨七月的你)
  type: MusicAlbum
  date published: 2022-04-11
album: 陌上雪
  type: MusicAlbum
  date published: 2024-05-15
album: 荒年
  type: MusicAlbum
  date published: 2024-10-12
album: 秋天你不在场
  type: MusicAlbum
  date published: 2024-11-16
album: 歇后不语
  type: MusicAlbum
  date published: 2025-03-13
album: 俩俩相忘
  type: MusicAlbum
  date published: 2025-07-11
track: 胜者为王
track: 【盗墓笔记】见闻山海 - 剧情版
track: 一战成名
track: 胜者为王（《全职高手》广播剧第一季ED）
track: 神州望 - 纯歌版

胜者为王
type: MusicRecording
duration: PT3M58S
duration ms: 238992
explicit: false
by artist: 哦漏
by artist: 奇然
by artist: 沈谧仁
by artist: NL不分
by artist: 小魂
by artist: 徐远书
by artist: 大C
in album: 胜者为王
  type: MusicAlbum
  date published: 2019-08-02
genre: c-pop
genre: gufeng
isrc code: QZZ972310686
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-07T07:27:36+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ972310686
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
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
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e984a8621d4e209022818778260a518a52f329ee59002debbd34b7fac6b3ace. 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/QZZ972310686.
  date published: 2026-07-08T03:20:19Z
audio: 胜者为王
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

【盗墓笔记】见闻山海 - 剧情版
type: MusicRecording
duration: PT6M19S
duration ms: 379815
explicit: false
by artist: 音频怪物
by artist: 晃儿
by artist: Assen捷
by artist: 云の泣
by artist: 奇然
by artist: 小魂
by artist: 李常超(Lao乾妈)
by artist: 祈Inory
by artist: 小义学长
by artist: 马里奥
by artist: 凌之轩
by artist: Braska
by artist: 佑可猫
by artist: 执素兮
by artist: 西瓜Kune
by artist: 以冬
by artist: NL不分
by artist: 丁丁RaJor
by artist: 萧忆情Alex
by artist: 糖醋排骨
by artist: 泥鳅Niko
by artist: 三畿道
by artist: 沈谧仁
by artist: 王梓钰
by artist: 易言
by artist: 海疼er
by artist: 刷牙
by artist: 肥皂菌丨珉珉的猫咪丨
by artist: 根小八
by artist: 裂天
by artist: 妄尘
by artist: 王敬轩 (妖扬)
by artist: 赵方婧
by artist: KenZong
by artist: 妖蝠
by artist: 小时姑娘
by artist: Babystop_山竹
by artist: 卡修
by artist: 徐远书
by artist: 糯米Nomi
in album: 盗墓笔记·见闻山海
  type: MusicAlbum
  date published: 2022-06-26
popularity: 5
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9c7451a32f94b5fa6450f745a3231ae790fb22b145e0aa63ced5b6ae759270. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/HKG731616930.
  date published: 2026-07-29T13:09:35Z
audio: 【盗墓笔记】见闻山海 - 剧情版
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.651
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.061
  additional property: Acousticness
    type: PropertyValue
    value: 0.176
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.166
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.488
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.616
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: HKG731616930
additional property: CopyrightID
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: 960108
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T13:09:35+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG731616930
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960108
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960108
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T13:09:35+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 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

一战成名
type: MusicRecording
duration: PT3M44S
duration ms: 224675
explicit: false
by artist: 沈谧仁
by artist: 奇然
by artist: 哦漏
by artist: NL不分
by artist: 徐远书
in album: 一战成名
  type: MusicAlbum
  date published: 2017-03-25
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f05d3daef15a659cfd3158cd22d2793fcbdd172f4bf15a9ba55f644070eaba. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZZ972310801.
  date published: 2026-07-31T05:17:02Z
audio: 一战成名
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 162.292
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.412
  additional property: Energy
    type: PropertyValue
    value: 0.918
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.021
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.627
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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    value: F
  additional property: Mode Name
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isrc code: QZZ972310801
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
  type: PropertyValue
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960348
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T05:17:02+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ972310801
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960348
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T05:17:02+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 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

胜者为王（《全职高手》广播剧第一季ED）
type: MusicRecording
duration: PT3M59S
duration ms: 239026
explicit: false
by artist: 哦漏
by artist: 奇然
by artist: 沈谧仁
by artist: NL不分
by artist: 小魂
by artist: 徐远书
by artist: 大C
in album: 胜者为王（《全职高手》广播剧第一季ED）
  type: MusicAlbum
  date published: 2019-08-02
genre: c-pop
genre: gufeng
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75d3b00fac92035059c921d6ef376c3b6023f8b9caeb021bdc08868356d5c25. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/HKG732427997.
  date published: 2026-07-31T23:30:38Z
audio: 胜者为王（《全职高手》广播剧第一季ED）
  type: AudioObject
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
    value: 0.221
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.74
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.004
  additional property: Key Name
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  additional property: Mode Name
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isrc code: HKG732427997
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732427997
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960478
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T23:30:38+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 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

神州望 - 纯歌版
type: MusicRecording
duration: PT4M34S
duration ms: 274256
explicit: false
by artist: 流浪的蛙蛙
by artist: 少年霜
by artist: 徐远书
by artist: 熙宝
by artist: 萧忆情Alex
by artist: 阿YueYue
by artist: 泥鳅Niko
by artist: 玄觞
by artist: 裂天
by artist: 执素兮
by artist: Vk
by artist: HITA
in album: 神州望
  type: MusicAlbum
  date published: 2023-01-07
genre: c-pop
genre: gufeng
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b46886af82414969e46372107c61369856273777cc9bcc4e6241af3072b734d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/HKG732305761.
  date published: 2026-07-30T14:36:16Z
audio: 神州望 - 纯歌版
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
    type: PropertyValue
    value: 0.622
  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
    value: 0.4
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.281
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.532
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.434
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: HKG732305761
additional property: CopyrightID
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: 960264
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T14:36:16+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732305761
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960264
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960264
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T14:36:16+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 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