Hossein Keshtkar
type: MusicGroup
popularity: 4
followers: 246
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7554d6751b74c1e4e913330fdc93e01a3755e6990c272c6ce10b14e582f0ea39
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6e2b49cc-07b0-40f2-81f5-0d711648cada.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6e2b49cc-07b0-40f2-81f5-0d711648cada.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6e2b49cc-07b0-40f2-81f5-0d711648cada
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7554d6751b74c1e4e913330fdc93e01a3755e6990c272c6ce10b14e582f0ea39","name":"Hossein Keshtkar","registered_at":"2026-06-17T04:04:58Z","symbol":"NIM1275519","token_address":"0x16d6695a35c7b3955b94a3d069bb5187917a7bd5","type":"artist","uuid":"6e2b49cc-07b0-40f2-81f5-0d711648cada"}
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 0x7554d6751b74c1e4e913330fdc93e01a3755e6990c272c6ce10b14e582f0ea39. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e2b49cc-07b0-40f2-81f5-0d711648cada.json and https://artists.proofprofile.net/proofs/artist/6e2b49cc-07b0-40f2-81f5-0d711648cada.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x7554d6751b74c1e4e913330fdc93e01a3755e6990c272c6ce10b14e582f0ea39","name":"Hossein Keshtkar","registered_at":"2026-06-17T04:04:58Z","symbol":"NIM1275519","token_address":"0x16d6695a35c7b3955b94a3d069bb5187917a7bd5","type":"artist","uuid":"6e2b49cc-07b0-40f2-81f5-0d711648cada"}
album: Teshneh - Kaman
  type: MusicAlbum
  date published: 2007-01-01
album: Best Of Hossein Keshtkar Vol.2
  type: MusicAlbum
  date published: 2022-04-01
album: Best Of Hossein Keshtkar Vol.1
  type: MusicAlbum
  date published: 2022-04-01
album: Best Of Hossein Keshtkar Vol.1
  type: MusicAlbum
  date published: 2022-04-01
  track: Manam Sagrgashteye Heyranat Ey Doost
    type: MusicRecording
    duration: PT5M44S
    duration ms: 344200
    explicit: false
    by artist: Hossein Keshtkar
    in album: Best Of Hossein Keshtkar Vol.1
      type: MusicAlbum
      date published: 2022-04-01
    isrc code: EEUL32204868
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T19:21:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x37539b20511bf795450d53c0cdbf2440a923ae386f0380654ca13049623285cc
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EEUL32204868
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37539b20511bf795450d53c0cdbf2440a923ae386f0380654ca13049623285cc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EEUL32204868.
      date published: 2026-07-05T01:12:41Z
    audio: Manam Sagrgashteye Heyranat Ey Doost
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.907
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.663
      additional property: Energy
        type: PropertyValue
        value: 0.344
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.655
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.095
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.607
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.804
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor