Cairo
type: MusicGroup
genre: brazilian trap
description: Cairo is the capital and largest city of Egypt and the Cairo Governorate. It is home to more than 9.8 million people. It is also part of the largest urban agglomeration in Africa, the Arab world, and
popularity: 8
followers: 313
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSCanonicalRecord
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 0xf11f08b265a81e8ab399c00b270de45c998c412f451253f6c948b2fd8ebbc910. Chain 2 (Bitcoin): anchored in block 953847 (2026-06-15T22:51:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00c35aab-068f-4815-8899-4ce276c3fdfe.json and https://artists.proofprofile.net/proofs/artist/00c35aab-068f-4815-8899-4ce276c3fdfe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:51:00Z
album: Câmera Lenta
  type: MusicAlbum
  date published: 2020-01-23
album: Te Quero Aqui (Acústico)
  type: MusicAlbum
  date published: 2020-04-17
album: Quando Cê Volta
  type: MusicAlbum
  date published: 2020-05-25
album: Dripcash
  type: MusicAlbum
  date published: 2020-07-01
album: Nordestão
  type: MusicAlbum
  date published: 2021-02-13
album: Nordestão
  type: MusicAlbum
  date published: 2021-02-13
album: LEANMONADE
  type: MusicAlbum
  date published: 2021-04-30
album: D&G
  type: MusicAlbum
  date published: 2021-07-09
album: Uma Luz
  type: MusicAlbum
  date published: 2021-08-30
  track: Uma Luz
    type: MusicRecording
    duration: PT3M12S
    duration ms: 192028
    explicit: false
    by artist: Cairo
    in album: Uma Luz
      type: MusicAlbum
      date published: 2021-08-30
    genre: brazilian trap
    isrc code: SE6TI2163503
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    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:20:19Z
    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 0xd68ac5515dcea9cb3c0f129ca5eaff1ef72ab189c458dab69498ded288ec8ff8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE6TI2163503.
      date published: 2026-07-08T03:20:19Z
    audio: Uma Luz
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 124.801
      additional property: Musical Key
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        value: 11
      additional property: Mode (Major/Minor)
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      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
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      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.322
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.265
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Sorte
  type: MusicAlbum
  date published: 2021-12-23
album: Meu Dom
  type: MusicAlbum
  date published: 2022-02-01
album: Big Mac
  type: MusicAlbum
  date published: 2022-05-25
album: Céu Azul
  type: MusicAlbum
  date published: 2022-11-25
album: 3AM
  type: MusicAlbum
  date published: 2022-12-10
album: 3AM (Speed Version)
  type: MusicAlbum
  date published: 2022-12-29
album: Lágrimas
  type: MusicAlbum
  date published: 2023-05-26
album: Depois das 11:00
  type: MusicAlbum
  date published: 2024-07-19
album: Depois das 11
  type: MusicAlbum
  date published: 2024-08-15
album: FAZ
  type: MusicAlbum
  date published: 2024-08-15
track: Orgulho
  type: MusicRecording
  duration: PT4M14S
  duration ms: 254599
  explicit: false
  by artist: Aimar
  by artist: Cairo
  by artist: Blueface Company
  by artist: Libiuz
  by artist: pedrin.xxvii
  in album: Orgulho
    type: MusicAlbum
    date published: 2022-02-11
  isrc code: QZ5FN2235970
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    value: registered
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  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Orgulho

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x92bde06684d864a5f6ecd8ac70f38fba621504efddbcf1395f11b64b8b74cffd

OTSHash
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OTSBitcoinBlock
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value: 960334

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960334

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN2235970

OTSTimestamp
type: PropertyValue
value: 2026-07-31T02:19:15Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bde06684d864a5f6ecd8ac70f38fba621504efddbcf1395f11b64b8b74cffd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZ5FN2235970.
date published: 2026-07-31T02:19:15Z

Orgulho
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 124.79
additional property: Musical Key
  type: PropertyValue
  value: 11
additional property: Mode (Major/Minor)
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  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.775
additional property: Energy
  type: PropertyValue
  value: 0.395
additional property: Speechiness
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  value: 0.234
additional property: Acousticness
  type: PropertyValue
  value: 0.057
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.12
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.225
additional property: Loudness (dB)
  type: PropertyValue
  value: -16.381
additional property: Key Name
  type: PropertyValue
  value: B
additional property: Mode Name
  type: PropertyValue
  value: Minor