CAiRO
type: MusicGroup
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: 17
followers: 3290
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1a1d77642d5d3f8b6914c5fbd523c709aa0c3592ffd52352b63f6d47927c06a1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953617
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953617
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1be0834d-5d7d-4c75-a8c4-a06d9a4e250b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1be0834d-5d7d-4c75-a8c4-a06d9a4e250b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1be0834d-5d7d-4c75-a8c4-a06d9a4e250b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T09:00:45Z
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 0x1a1d77642d5d3f8b6914c5fbd523c709aa0c3592ffd52352b63f6d47927c06a1. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1be0834d-5d7d-4c75-a8c4-a06d9a4e250b.json and https://artists.proofprofile.net/proofs/artist/1be0834d-5d7d-4c75-a8c4-a06d9a4e250b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T09:00:45Z
album: 2TakeYourMindOffThings
  type: MusicAlbum
  date published: 2019-08-30
album: Red Leather
  type: MusicAlbum
  date published: 2020-10-30
album: Let Me In
  type: MusicAlbum
  date published: 2021-04-09
album: Let Me In
  type: MusicAlbum
  date published: 2021-04-09
album: Forbidden Fruit
  type: MusicAlbum
  date published: 2021-05-21
album: Make It Clear
  type: MusicAlbum
  date published: 2021-09-27
album: Nocturnal Creatures
  type: MusicAlbum
  date published: 2022-02-04
  track: Nocturnal Creatures
    type: MusicRecording
    duration: PT1M49S
    duration ms: 109000
    explicit: true
    by artist: CAiRO
    in album: Nocturnal Creatures
      type: MusicAlbum
      date published: 2022-02-04
    isrc code: QZFZ62226318
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T08:04:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf65f59e53b018ffa5bbe16ff8d1ce30e0a25ffa85deff0a334fd03a25e99fd9f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958700
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958700
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ62226318
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T08:09:50Z
    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 0xf65f59e53b018ffa5bbe16ff8d1ce30e0a25ffa85deff0a334fd03a25e99fd9f. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZFZ62226318.
      date published: 2026-07-19T08:09:50Z
    audio: Nocturnal Creatures
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 175.966
      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: 0.523
      additional property: Energy
        type: PropertyValue
        value: 0.56
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.079
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.003
      additional property: Liveness
        type: PropertyValue
        value: 0.128
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.233
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.434
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Cruel Intentions
  type: MusicAlbum
  date published: 2022-03-25
  track: Cruel Intentions
    type: MusicRecording
    duration: PT2M8S
    duration ms: 128571
    explicit: true
    by artist: CAiRO
    in album: Cruel Intentions
      type: MusicAlbum
      date published: 2022-03-25
    isrc code: QZES52291230
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T07:20:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe886666bd466b84ba08b8299d5c580dd58aa4c62d7d96e9cecbec478ceabb421
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958695
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958695
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52291230
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T07:37:00Z
    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 0xe886666bd466b84ba08b8299d5c580dd58aa4c62d7d96e9cecbec478ceabb421. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZES52291230.
      date published: 2026-07-19T07:37:00Z
    audio: Cruel Intentions
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.996
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.555
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Fantasy
album: Melancholia
album: Melancholia (nightcore)
album: As Above, So Below

Energy
type: PropertyValue
value: 0.659

Speechiness
type: PropertyValue
value: 0.039

Acousticness
type: PropertyValue
value: 0.099

Instrumentalness
type: PropertyValue
value: 0.017

Liveness
type: PropertyValue
value: 0.113

Valence (Positivity)
type: PropertyValue
value: 0.086

Loudness (dB)
type: PropertyValue
value: -8.268

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Minor

Fantasy
type: MusicAlbum
date published: 2022-06-20

Melancholia
type: MusicAlbum
date published: 2022-10-11
track: Melancholia
  type: MusicRecording
  duration: PT2M5S
  duration ms: 125030
  explicit: false
  by artist: CAiRO
  in album: Melancholia
    type: MusicAlbum
    date published: 2022-10-11
  isrc code: QZRP52213169
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T15:27:52+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x4393f8fe0a015269c0dec7e2a248389cd804b9bfcff24e57735071cf04fb025d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959026
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959026
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRP52213169
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T15:38:13Z
  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 0x4393f8fe0a015269c0dec7e2a248389cd804b9bfcff24e57735071cf04fb025d. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/QZRP52213169.
    date published: 2026-07-21T15:38:13Z
  audio: Melancholia
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 143.971
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.51
    additional property: Energy
      type: PropertyValue
      value: 0.595
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.031
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.137
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.036
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.867
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Melancholia (nightcore)
type: MusicAlbum
date published: 2022-10-11

Melancholia
type: MusicAlbum
date published: 2022-10-11

As Above, So Below
type: MusicAlbum
date published: 2023-04-06
track: As Above, So Below
  type: MusicRecording
  duration: PT1M31S
  duration ms: 91640
  explicit: false
  by artist: CAiRO
  in album: As Above, So Below
    type: MusicAlbum
    date published: 2023-04-06
  isrc code: QZHN72335721
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T01:13:25+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x24d91ce8055913c85aa0f833ff850eb47666e6d63ee3f0f56e823ff2b62854c3
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956856
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956856
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72335721
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T01:25:57Z
  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 0x24d91ce8055913c85aa0f833ff850eb47666e6d63ee3f0f56e823ff2b62854c3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN72335721.
    date published: 2026-07-06T01:25:57Z
  audio: As Above, So Below
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 111.176
    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: 0.462
    additional property: Energy
      type: PropertyValue
      value: 0.452
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.086
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.003
    additional property: Liveness
      type: PropertyValue
      value: 0.113
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.073
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.026
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major