اسامة الزكار
type: MusicGroup
popularity: 2
followers: 45
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3a74c6888f1cfa6ebb439ac4fe975dabec765fba1949ad2bdf61fa92171d9adf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b0480cbc-3cce-4493-8fad-82c6715df02a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b0480cbc-3cce-4493-8fad-82c6715df02a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b0480cbc-3cce-4493-8fad-82c6715df02a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3a74c6888f1cfa6ebb439ac4fe975dabec765fba1949ad2bdf61fa92171d9adf","name":"اسامة الزكار","registered_at":"2026-06-20T12:22:08Z","symbol":"NIM1610939","token_address":"0x4bf97e2cdfcf5bfbf246e9ea9af7f0bd823b7c64","type":"artist","uuid":"b0480cbc-3cce-4493-8fad-82c6715df02a"}
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 0x3a74c6888f1cfa6ebb439ac4fe975dabec765fba1949ad2bdf61fa92171d9adf. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0480cbc-3cce-4493-8fad-82c6715df02a.json and https://artists.proofprofile.net/proofs/artist/b0480cbc-3cce-4493-8fad-82c6715df02a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x3a74c6888f1cfa6ebb439ac4fe975dabec765fba1949ad2bdf61fa92171d9adf","name":"اسامة الزكار","registered_at":"2026-06-20T12:22:08Z","symbol":"NIM1610939","token_address":"0x4bf97e2cdfcf5bfbf246e9ea9af7f0bd823b7c64","type":"artist","uuid":"b0480cbc-3cce-4493-8fad-82c6715df02a"}
album: وين وعوده
  type: MusicAlbum
  date published: 2025-05-15
  track: وين وعوده
    type: MusicRecording
    duration: PT4M17S
    duration ms: 257670
    explicit: false
    by artist: اسامة الزكار
    in album: وين وعوده
      type: MusicAlbum
      date published: 2025-05-15
    isrc code: FRX452573244
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T20:31:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x90791cd3def3cbf33553fa263ddbafc5977812f10f2b615f8c1422b52d644e1a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958779
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958779
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452573244
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T21:08:39Z
    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 0x90791cd3def3cbf33553fa263ddbafc5977812f10f2b615f8c1422b52d644e1a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/FRX452573244.
      date published: 2026-07-19T21:08:39Z
    audio: وين وعوده
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 76.597
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.433
      additional property: Energy
        type: PropertyValue
        value: 0.605
      additional property: Speechiness
        type: PropertyValue
        value: 0.091
      additional property: Acousticness
        type: PropertyValue
        value: 0.516
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.006
      additional property: Liveness
        type: PropertyValue
        value: 0.295
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.627
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.303
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major