Nairobi Sisters
type: MusicGroup
popularity: 7
followers: 182
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfb298a9d96cfc0eae7cc11f15c1640b799f1ff5dc805cc8bca2645cbcdc44c95
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f8287ee3-6fe2-4318-9780-52d7a473bc4c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f8287ee3-6fe2-4318-9780-52d7a473bc4c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f8287ee3-6fe2-4318-9780-52d7a473bc4c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfb298a9d96cfc0eae7cc11f15c1640b799f1ff5dc805cc8bca2645cbcdc44c95","name":"Nairobi Sisters","registered_at":"2026-06-21T16:09:22Z","symbol":"NIM1968081","token_address":"0x5b12566a914b1e8ddacd07b8ab2e1a8572afa944","type":"artist","uuid":"f8287ee3-6fe2-4318-9780-52d7a473bc4c"}
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 0xfb298a9d96cfc0eae7cc11f15c1640b799f1ff5dc805cc8bca2645cbcdc44c95. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8287ee3-6fe2-4318-9780-52d7a473bc4c.json and https://artists.proofprofile.net/proofs/artist/f8287ee3-6fe2-4318-9780-52d7a473bc4c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0xfb298a9d96cfc0eae7cc11f15c1640b799f1ff5dc805cc8bca2645cbcdc44c95","name":"Nairobi Sisters","registered_at":"2026-06-21T16:09:22Z","symbol":"NIM1968081","token_address":"0x5b12566a914b1e8ddacd07b8ab2e1a8572afa944","type":"artist","uuid":"f8287ee3-6fe2-4318-9780-52d7a473bc4c"}
album: Promised Land
  type: MusicAlbum
  date published: 2023-09-22
  track: Promised Land
    type: MusicRecording
    duration: PT3M14S
    duration ms: 194865
    explicit: false
    by artist: Nairobi Sisters
    in album: Promised Land
      type: MusicAlbum
      date published: 2023-09-22
    isrc code: GBE8H2314001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T01:33:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfb7746b6d109036e53de5c16ae326d4bcdde8a9589e8ae6ed69c7eef30f2bc5e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958951
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958951
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBE8H2314001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T02:01:41Z
    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 0xfb7746b6d109036e53de5c16ae326d4bcdde8a9589e8ae6ed69c7eef30f2bc5e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBE8H2314001 — a six-check JSON result.
      date published: 2026-07-21T02:01:41Z
    audio: Promised Land
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 91.427
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.727
      additional property: Energy
        type: PropertyValue
        value: 0.711
      additional property: Speechiness
        type: PropertyValue
        value: 0.198
      additional property: Acousticness
        type: PropertyValue
        value: 0.346
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.071
      additional property: Liveness
        type: PropertyValue
        value: 0.159
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.794
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.695
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Promised Land Dub
    type: MusicRecording
    duration: PT3M8S
    duration ms: 188291
    explicit: false
    by artist: Nairobi Sisters
    in album: Promised Land
      type: MusicAlbum
      date published: 2023-09-22
    isrc code: GBE8H2314002
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T03:34:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9d874128772051da7dc6b2acad397c8d68d4c8cc5691a8410dbfc2fa5a225564
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958362
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958362
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBE8H2314002
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T04:32:48Z
    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 0x9d874128772051da7dc6b2acad397c8d68d4c8cc5691a8410dbfc2fa5a225564. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBE8H2314002 — a six-check JSON result.
      date published: 2026-07-17T04:32:48Z
    audio: Promised Land Dub
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 91.852
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.863
      additional property: Energy
        type: PropertyValue
        value: 0.588
      additional property: Speechiness
        type: PropertyValue
        value: 0.17
      additional property: Acousticness
        type: PropertyValue
        value: 0.402
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.51
      additional property: Liveness
        type: PropertyValue
        value: 0.16
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.875
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.036
      additional property: Key Name
      additional property: Mode Name

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Major