Alef Duarte
type: MusicGroup
popularity: 3
followers: 56
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x43de1eb3154d741b412c0d6374ac14ebcdec60f77e05c37635aaa557678d11dd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953984
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953984
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2d4c0ccc-e3a2-4a5f-b554-2eec1b42b8eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2d4c0ccc-e3a2-4a5f-b554-2eec1b42b8eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2d4c0ccc-e3a2-4a5f-b554-2eec1b42b8eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T18:08:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x43de1eb3154d741b412c0d6374ac14ebcdec60f77e05c37635aaa557678d11dd","name":"Alef Duarte","registered_at":"2026-06-16T05:37:55Z","symbol":"NIM0954083","token_address":"0x5589783c23dcc6672ccb7960d03eb4be0f7a05d4","type":"artist","uuid":"2d4c0ccc-e3a2-4a5f-b554-2eec1b42b8eb"}
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 0x43de1eb3154d741b412c0d6374ac14ebcdec60f77e05c37635aaa557678d11dd. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d4c0ccc-e3a2-4a5f-b554-2eec1b42b8eb.json and https://artists.proofprofile.net/proofs/artist/2d4c0ccc-e3a2-4a5f-b554-2eec1b42b8eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0x43de1eb3154d741b412c0d6374ac14ebcdec60f77e05c37635aaa557678d11dd","name":"Alef Duarte","registered_at":"2026-06-16T05:37:55Z","symbol":"NIM0954083","token_address":"0x5589783c23dcc6672ccb7960d03eb4be0f7a05d4","type":"artist","uuid":"2d4c0ccc-e3a2-4a5f-b554-2eec1b42b8eb"}
album: Sedento de Ti
  type: MusicAlbum
  date published: 2023-06-08
album: A Tua Mão - Ao Vivo
  type: MusicAlbum
  date published: 2025-06-27
  track: A Tua Mão - Ao Vivo
    type: MusicRecording
    duration: PT7M19S
    duration ms: 439980
    explicit: false
    by artist: Alef Duarte
    in album: A Tua Mão - Ao Vivo
      type: MusicAlbum
      date published: 2025-06-27
    isrc code: QZNJW2520173
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T08:14:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x87165ed0dd6e23a40b05844c3ada932c94899ab6907b02132a4333017d53e55f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2520173
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 0x87165ed0dd6e23a40b05844c3ada932c94899ab6907b02132a4333017d53e55f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNJW2520173.
      date published: 2026-07-04T11:19:20Z
    audio: A Tua Mão - Ao Vivo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.846
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.299
      additional property: Energy
        type: PropertyValue
        value: 0.506
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.059
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.318
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.27
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.388
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major