Arthur Endo
type: MusicGroup
popularity: 5
followers: 1236
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbea0764d513dcdeca14e559b658f5d90da717e50434287562ffd5db0fa659f2c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/76a6a8c2-f6e8-48ee-92d7-0e7b4f4ecb74.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/76a6a8c2-f6e8-48ee-92d7-0e7b4f4ecb74.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/76a6a8c2-f6e8-48ee-92d7-0e7b4f4ecb74
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbea0764d513dcdeca14e559b658f5d90da717e50434287562ffd5db0fa659f2c","name":"Arthur Endo","registered_at":"2026-06-17T06:58:48Z","symbol":"NIM1317003","token_address":"0xb95c206c6685c08eeaca8f4367f6287158e8ab72","type":"artist","uuid":"76a6a8c2-f6e8-48ee-92d7-0e7b4f4ecb74"}
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 0xbea0764d513dcdeca14e559b658f5d90da717e50434287562ffd5db0fa659f2c. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76a6a8c2-f6e8-48ee-92d7-0e7b4f4ecb74.json and https://artists.proofprofile.net/proofs/artist/76a6a8c2-f6e8-48ee-92d7-0e7b4f4ecb74.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T15:44:10Z
  text: {"copyright_id":"0xbea0764d513dcdeca14e559b658f5d90da717e50434287562ffd5db0fa659f2c","name":"Arthur Endo","registered_at":"2026-06-17T06:58:48Z","symbol":"NIM1317003","token_address":"0xb95c206c6685c08eeaca8f4367f6287158e8ab72","type":"artist","uuid":"76a6a8c2-f6e8-48ee-92d7-0e7b4f4ecb74"}
album: Narrativas de um Brasil
  type: MusicAlbum
  date published: 2019-04-13
  track: Conversa de Baiana
    type: MusicRecording
    duration: PT3M58S
    duration ms: 238493
    explicit: false
    by artist: Arthur Endo
    in album: Narrativas de um Brasil
      type: MusicAlbum
      date published: 2019-04-13
    isrc code: BX9AH1900003
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T17:11:01+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7a19376d31346900f77dbfeb7a83f8986315125c036b8a808110e1c1341d899a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958917
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958917
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX9AH1900003
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T20:09:03Z
    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 0x7a19376d31346900f77dbfeb7a83f8986315125c036b8a808110e1c1341d899a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:09:03Z), 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/BX9AH1900003.
      date published: 2026-07-20T20:09:03Z
    audio: Conversa de Baiana
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 89.771
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.384
      additional property: Energy
        type: PropertyValue
        value: 0.235
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.961
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.93
      additional property: Liveness
        type: PropertyValue
        value: 0.121
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.707
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.675
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major