Samuel Caio Mendes
type: MusicGroup
genre: bossa nova
popularity: 5
followers: 46
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7fa6c7815d6c1b6befcea60fce9adcd0376b1c9a8e1228dabc4432fa9d448543
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953846
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953846
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/00e6fa0c-bf25-45bb-86e1-54faa239ff09.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/00e6fa0c-bf25-45bb-86e1-54faa239ff09.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/00e6fa0c-bf25-45bb-86e1-54faa239ff09
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:48:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7fa6c7815d6c1b6befcea60fce9adcd0376b1c9a8e1228dabc4432fa9d448543","name":"Samuel Caio Mendes","registered_at":"2026-06-15T13:51:08Z","symbol":"NIM0728084","token_address":"0xf6cc989734c02724f4eae314f1b9ac22847471bc","type":"artist","uuid":"00e6fa0c-bf25-45bb-86e1-54faa239ff09"}
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 0x7fa6c7815d6c1b6befcea60fce9adcd0376b1c9a8e1228dabc4432fa9d448543. Chain 2 (Bitcoin): anchored in block 953846 (2026-06-15T22:48:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00e6fa0c-bf25-45bb-86e1-54faa239ff09.json and https://artists.proofprofile.net/proofs/artist/00e6fa0c-bf25-45bb-86e1-54faa239ff09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:48:34Z
  text: {"copyright_id":"0x7fa6c7815d6c1b6befcea60fce9adcd0376b1c9a8e1228dabc4432fa9d448543","name":"Samuel Caio Mendes","registered_at":"2026-06-15T13:51:08Z","symbol":"NIM0728084","token_address":"0xf6cc989734c02724f4eae314f1b9ac22847471bc","type":"artist","uuid":"00e6fa0c-bf25-45bb-86e1-54faa239ff09"}
album: Melancholic Rio
  type: MusicAlbum
  date published: 2023-05-05
album: Spiced with Bossa
  type: MusicAlbum
  date published: 2023-12-22
  track: Este Rio De Amor
    type: MusicRecording
    duration: PT1M39S
    duration ms: 99573
    explicit: false
    by artist: Samuel Caio Mendes
    in album: Spiced with Bossa
      type: MusicAlbum
      date published: 2023-12-22
    genre: bossa nova
    isrc code: ITCUC2300623
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T10:11:36+00:00
    additional property: CopyrightChainExplorerURL
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      value: https://explorer.copyrightchains.com/tx/0x64eaa855acbe8a1b4d7c229baa714417034929060b462d83a68640b3c7afca06
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 958276
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958276
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITCUC2300623
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T10:20:17Z
    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 0x64eaa855acbe8a1b4d7c229baa714417034929060b462d83a68640b3c7afca06. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ITCUC2300623.
      date published: 2026-07-16T10:20:17Z
    audio: Este Rio De Amor
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 79.987
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.625
      additional property: Energy
        type: PropertyValue
        value: 0.097
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.939
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.901
      additional property: Liveness
        type: PropertyValue
        value: 0.092
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.412
      additional property: Loudness (dB)
        type: PropertyValue
        value: -23.834
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major