Alberto Barreira
type: MusicGroup
popularity: 8
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf489d20204c850bbd662dedfdb79b855890ef57b2a10e165b2745ed3e7d270a9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954131
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954131
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7de917fd-fa38-43c0-9fdb-828d6cefd1aa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7de917fd-fa38-43c0-9fdb-828d6cefd1aa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7de917fd-fa38-43c0-9fdb-828d6cefd1aa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:19:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf489d20204c850bbd662dedfdb79b855890ef57b2a10e165b2745ed3e7d270a9","name":"Alberto Barreira","registered_at":"2026-06-17T09:23:31Z","symbol":"NIM1351474","token_address":"0xe5d7c219ee88dba9821546b3c9f31d249b3e9de5","type":"artist","uuid":"7de917fd-fa38-43c0-9fdb-828d6cefd1aa"}
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 0xf489d20204c850bbd662dedfdb79b855890ef57b2a10e165b2745ed3e7d270a9. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7de917fd-fa38-43c0-9fdb-828d6cefd1aa.json and https://artists.proofprofile.net/proofs/artist/7de917fd-fa38-43c0-9fdb-828d6cefd1aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:19:19Z
  text: {"copyright_id":"0xf489d20204c850bbd662dedfdb79b855890ef57b2a10e165b2745ed3e7d270a9","name":"Alberto Barreira","registered_at":"2026-06-17T09:23:31Z","symbol":"NIM1351474","token_address":"0xe5d7c219ee88dba9821546b3c9f31d249b3e9de5","type":"artist","uuid":"7de917fd-fa38-43c0-9fdb-828d6cefd1aa"}
album: A Sétima Lua
  type: MusicAlbum
  date published: 2006-01-22
  track: A Sétima Lua
    type: MusicRecording
    duration: PT6M50S
    duration ms: 410900
    explicit: false
    by artist: Alberto Barreira
    in album: A Sétima Lua
      type: MusicAlbum
      date published: 2006-01-22
    isrc code: DEZC62184476
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T13:17:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x67e54d1a37e02a28564f222fd64c2b6728123fa2ba7ee807b217490ef9fe3874
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959011
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959011
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62184476
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T13:26:15Z
    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 0x67e54d1a37e02a28564f222fd64c2b6728123fa2ba7ee807b217490ef9fe3874. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/DEZC62184476.
      date published: 2026-07-21T13:26:15Z
    audio: A Sétima Lua
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.486
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.402
      additional property: Energy
        type: PropertyValue
        value: 0.897
      additional property: Speechiness
        type: PropertyValue
        value: 0.051
      additional property: Acousticness
        type: PropertyValue
        value: 0.507
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.712
      additional property: Liveness
        type: PropertyValue
        value: 0.083
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.821
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.897
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major