Vịn
type: MusicGroup
popularity: 4
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1736cf94e6f4dbd309c2622a65de82c68df15c1945610ae1c19f5dbc5bf7af62
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/920dc889-b402-429e-aedd-8f48a6a7e4b0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/920dc889-b402-429e-aedd-8f48a6a7e4b0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/920dc889-b402-429e-aedd-8f48a6a7e4b0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1736cf94e6f4dbd309c2622a65de82c68df15c1945610ae1c19f5dbc5bf7af62","name":"Vịn","registered_at":"2026-06-17T16:38:57Z","symbol":"NIM1455292","token_address":"0x2e7edba808af2decc29c2bccdfd144790e875ccc","type":"artist","uuid":"920dc889-b402-429e-aedd-8f48a6a7e4b0"}
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 0x1736cf94e6f4dbd309c2622a65de82c68df15c1945610ae1c19f5dbc5bf7af62. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/920dc889-b402-429e-aedd-8f48a6a7e4b0.json and https://artists.proofprofile.net/proofs/artist/920dc889-b402-429e-aedd-8f48a6a7e4b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x1736cf94e6f4dbd309c2622a65de82c68df15c1945610ae1c19f5dbc5bf7af62","name":"Vịn","registered_at":"2026-06-17T16:38:57Z","symbol":"NIM1455292","token_address":"0x2e7edba808af2decc29c2bccdfd144790e875ccc","type":"artist","uuid":"920dc889-b402-429e-aedd-8f48a6a7e4b0"}
album: LanKan
  type: MusicAlbum
  date published: 2025-08-04
  track: BacCai
    type: MusicRecording
    duration: PT2M24S
    duration ms: 144390
    explicit: false
    by artist: Vịn
    in album: LanKan
      type: MusicAlbum
      date published: 2025-08-04
    isrc code: US38Y2568021
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T08:05:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x89396d305dc626d7fb91baac8e05c51d51b02b5589c4ac5005fb17bfe4ebf568
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958853
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958853
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US38Y2568021
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T11:04:57Z
    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 0x89396d305dc626d7fb91baac8e05c51d51b02b5589c4ac5005fb17bfe4ebf568. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:04:57Z), 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/US38Y2568021.
      date published: 2026-07-20T11:04:57Z
    audio: BacCai
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 81.019
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.625
      additional property: Energy
        type: PropertyValue
        value: 0.024
      additional property: Speechiness
        type: PropertyValue
        value: 0.05
      additional property: Acousticness
        type: PropertyValue
        value: 0.913
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.119
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.332
      additional property: Loudness (dB)
        type: PropertyValue
        value: -29.16
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor