李天乐
type: MusicGroup
popularity: 5
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x693bfbdc5ebbafb8582ae18bed0622eebfe36da2e78b658e89ab7baae6d5e850
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9be38278-fc94-4ba9-a98a-db69182b93c3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9be38278-fc94-4ba9-a98a-db69182b93c3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9be38278-fc94-4ba9-a98a-db69182b93c3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x693bfbdc5ebbafb8582ae18bed0622eebfe36da2e78b658e89ab7baae6d5e850","name":"李天乐","registered_at":"2026-06-20T04:00:41Z","symbol":"NIM1504653","token_address":"0xd6dcce76b2b0146eb9b0cace7b20c3a10fbdf378","type":"artist","uuid":"9be38278-fc94-4ba9-a98a-db69182b93c3"}
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 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 0x693bfbdc5ebbafb8582ae18bed0622eebfe36da2e78b658e89ab7baae6d5e850. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9be38278-fc94-4ba9-a98a-db69182b93c3.json and https://artists.proofprofile.net/proofs/artist/9be38278-fc94-4ba9-a98a-db69182b93c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T04:47:29Z
  text: {"copyright_id":"0x693bfbdc5ebbafb8582ae18bed0622eebfe36da2e78b658e89ab7baae6d5e850","name":"李天乐","registered_at":"2026-06-20T04:00:41Z","symbol":"NIM1504653","token_address":"0xd6dcce76b2b0146eb9b0cace7b20c3a10fbdf378","type":"artist","uuid":"9be38278-fc94-4ba9-a98a-db69182b93c3"}
album: 去年今天
  type: MusicAlbum
  date published: 2021-01-12
album: 致前任
  type: MusicAlbum
  date published: 2021-01-12
album: 我们不简单
  type: MusicAlbum
  date published: 2024-08-01
album: 零和壹之歌 (华东师范大学软件工程学院院歌)
  type: MusicAlbum
  date published: 2024-10-23
  track: 零和壹之歌 - 华东师范大学软件工程学院院歌
    type: MusicRecording
    duration: PT2M56S
    duration ms: 176953
    explicit: false
    by artist: 李天乐
    in album: 零和壹之歌 (华东师范大学软件工程学院院歌)
      type: MusicAlbum
      date published: 2024-10-23
    isrc code: FR59R2542360
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T01:34:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x38d8db7959d4a001a989bfe72a980a3af3aaa3cf4d1469a8013538a0498ffe63
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958480
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958480
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2542360
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T02:58:58Z
    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 0x38d8db7959d4a001a989bfe72a980a3af3aaa3cf4d1469a8013538a0498ffe63. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR59R2542360.
      date published: 2026-07-18T02:58:58Z
    audio: 零和壹之歌 - 华东师范大学软件工程学院院歌
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.937
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.546
      additional property: Energy
        type: PropertyValue
        value: 0.474
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.655
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.191
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.454
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.936
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: 零和壹之歌 - 华东师范大学软件工程学院院歌伴奏
    type: MusicRecording
    duration: PT2M56S
    duration ms: 176953
    explicit: false
    by artist: 李天乐
    in album: 零和壹之歌 (华东师范大学软件工程学院院歌)
      type: MusicAlbum
      date published: 2024-10-23
    isrc code: FR59R2542361
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T08:45:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdc4c6e5caff2247ea26494e06b70363547fe3b10e1f59a45f360570b70acafe9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958526
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958526
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2542361
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T09:09:53Z
    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 0xdc4c6e5caff2247ea26494e06b70363547fe3b10e1f59a45f360570b70acafe9. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FR59R2542361.
      date published: 2026-07-18T09:09:53Z
    audio: 零和壹之歌 - 华东师范大学软件工程学院院歌伴奏
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 116.029
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.572
      additional property: Energy
        type: PropertyValue
        value: 0.445
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.503
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Liveness
type: PropertyValue
value: 0.145

Valence (Positivity)
type: PropertyValue
value: 0.37

Loudness (dB)
type: PropertyValue
value: -9.574

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Major