Do Tan Tu
type: MusicGroup
popularity: 2
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x439c34e541282f13c12d175e3da609a3f2b9f630ea82f691ce08978b9ce8d417
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954638
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954638
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d5a750d2-21b3-446c-b7f3-8c841cb002d1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d5a750d2-21b3-446c-b7f3-8c841cb002d1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d5a750d2-21b3-446c-b7f3-8c841cb002d1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x439c34e541282f13c12d175e3da609a3f2b9f630ea82f691ce08978b9ce8d417","name":"Do Tan Tu","registered_at":"2026-06-21T02:27:13Z","symbol":"NIM1791622","token_address":"0x7c1b433aeb90078efacd17a46b5dc6000a09b665","type":"artist","uuid":"d5a750d2-21b3-446c-b7f3-8c841cb002d1"}
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 0x439c34e541282f13c12d175e3da609a3f2b9f630ea82f691ce08978b9ce8d417. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5a750d2-21b3-446c-b7f3-8c841cb002d1.json and https://artists.proofprofile.net/proofs/artist/d5a750d2-21b3-446c-b7f3-8c841cb002d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T03:45:44Z
  text: {"copyright_id":"0x439c34e541282f13c12d175e3da609a3f2b9f630ea82f691ce08978b9ce8d417","name":"Do Tan Tu","registered_at":"2026-06-21T02:27:13Z","symbol":"NIM1791622","token_address":"0x7c1b433aeb90078efacd17a46b5dc6000a09b665","type":"artist","uuid":"d5a750d2-21b3-446c-b7f3-8c841cb002d1"}
album: Ánh Nắng Của Anh
  type: MusicAlbum
  date published: 2023-12-04
  track: Ánh Nắng Của Anh
    type: MusicRecording
    duration: PT5M8S
    duration ms: 308571
    explicit: false
    by artist: Do Tan Tu
    in album: Ánh Nắng Của Anh
      type: MusicAlbum
      date published: 2023-12-04
    isrc code: AUBEC2357166
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T01:40:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdf66c5ffde1fea8f6f94547ed9d704d81d5c6481325961b36697ccdc723891b2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956859
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956859
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC2357166
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:42:12Z
    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 0xdf66c5ffde1fea8f6f94547ed9d704d81d5c6481325961b36697ccdc723891b2. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/AUBEC2357166.
      date published: 2026-07-06T01:42:12Z
    audio: Ánh Nắng Của Anh
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.973
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.724
      additional property: Energy
        type: PropertyValue
        value: 0.777
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.066
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.624
      additional property: Liveness
        type: PropertyValue
        value: 0.654
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.803
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.304
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Hạ Buồn
  type: MusicAlbum
  date published: 2023-12-18