Tốp Ca Thiếu Nhi
type: MusicGroup
popularity: 2
followers: 31
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcf921b642930784aaca18cd4b5c9aafcfc0741914edeedbdefd00186d956b94a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b497f0ff-205f-47d0-9ec0-7242f8b83bc3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b497f0ff-205f-47d0-9ec0-7242f8b83bc3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b497f0ff-205f-47d0-9ec0-7242f8b83bc3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcf921b642930784aaca18cd4b5c9aafcfc0741914edeedbdefd00186d956b94a","name":"Tốp Ca Thiếu Nhi","registered_at":"2026-06-20T14:37:30Z","symbol":"NIM1631911","token_address":"0xa6cb7a59eab20b092d71ec1ffec88a565fbc67e5","type":"artist","uuid":"b497f0ff-205f-47d0-9ec0-7242f8b83bc3"}
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 0xcf921b642930784aaca18cd4b5c9aafcfc0741914edeedbdefd00186d956b94a. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b497f0ff-205f-47d0-9ec0-7242f8b83bc3.json and https://artists.proofprofile.net/proofs/artist/b497f0ff-205f-47d0-9ec0-7242f8b83bc3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xcf921b642930784aaca18cd4b5c9aafcfc0741914edeedbdefd00186d956b94a","name":"Tốp Ca Thiếu Nhi","registered_at":"2026-06-20T14:37:30Z","symbol":"NIM1631911","token_address":"0xa6cb7a59eab20b092d71ec1ffec88a565fbc67e5","type":"artist","uuid":"b497f0ff-205f-47d0-9ec0-7242f8b83bc3"}
album: Bé Chúc Tết
  type: MusicAlbum
  date published: 1996-01-01
album: Bé đi công viên
  type: MusicAlbum
  date published: 2016-01-01
track: Ông Trăng Xuống Chơi
  type: MusicRecording
  duration: PT4M32S
  duration ms: 272328
  explicit: false
  by artist: Tốp Ca Thiếu Nhi
  in album: Live show Phạm Duy-Mơ Giấc Mộng Dài
    type: MusicAlbum
    date published: 2024-04-03
  isrc code: VNA0M1934799
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T19:10:26+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xad8789a8522e164482fb9ef45c9b2c50870f2edf0d488a46cfebb0bd512431a3
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960298
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960298
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1934799
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T19:26:00Z
  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 0xad8789a8522e164482fb9ef45c9b2c50870f2edf0d488a46cfebb0bd512431a3. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/VNA0M1934799.
    date published: 2026-07-30T19:26:00Z
  audio: Ông Trăng Xuống Chơi
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 131.712
    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: 0.56
    additional property: Energy
      type: PropertyValue
      value: 0.711
    additional property: Speechiness
      type: PropertyValue
      value: 0.115
    additional property: Acousticness
      type: PropertyValue
      value: 0.088
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.001
    additional property: Liveness
      type: PropertyValue
      value: 0.356
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.709
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.298
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major