محمود معتمد
type: MusicGroup
genre: mahraganat
popularity: 19
followers: 825
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x12d37d4f69b5b75694790cf3b5d1dfd27e33ceb5c97cbc0f202eefb6bcb9c0fc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953645
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953645
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/408928c5-be47-452d-8c63-8af5f4527413.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/408928c5-be47-452d-8c63-8af5f4527413.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/408928c5-be47-452d-8c63-8af5f4527413
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T14:31:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x12d37d4f69b5b75694790cf3b5d1dfd27e33ceb5c97cbc0f202eefb6bcb9c0fc","name":"محمود معتمد","registered_at":"2026-06-14T11:12:58Z","symbol":"NIM0435008","token_address":"0xdcf96db392eaa469fa00034dc6c57996f1e87f6d","type":"artist","uuid":"408928c5-be47-452d-8c63-8af5f4527413"}
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 0x12d37d4f69b5b75694790cf3b5d1dfd27e33ceb5c97cbc0f202eefb6bcb9c0fc. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/408928c5-be47-452d-8c63-8af5f4527413.json and https://artists.proofprofile.net/proofs/artist/408928c5-be47-452d-8c63-8af5f4527413.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T14:31:42Z
  text: {"copyright_id":"0x12d37d4f69b5b75694790cf3b5d1dfd27e33ceb5c97cbc0f202eefb6bcb9c0fc","name":"محمود معتمد","registered_at":"2026-06-14T11:12:58Z","symbol":"NIM0435008","token_address":"0xdcf96db392eaa469fa00034dc6c57996f1e87f6d","type":"artist","uuid":"408928c5-be47-452d-8c63-8af5f4527413"}
album: مهرجان جيت ع البايظ هتكبرها عليا
  type: MusicAlbum
  date published: 2023-12-15
  track: مهرجان جيت ع البايظ هتكبرها عليا
    type: MusicRecording
    duration: PT4M27S
    duration ms: 267337
    explicit: false
    by artist: محمود معتمد
    in album: مهرجان جيت ع البايظ هتكبرها عليا
      type: MusicAlbum
      date published: 2023-12-15
    genre: mahraganat
    isrc code: DGA0Q2386621
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T00:52:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1c6822d1a484ac742a99b7d5ecc2324d4d55419f4d206856475f94552f32bc9c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957788
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957788
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0Q2386621
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T02:37:37Z
    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 0x1c6822d1a484ac742a99b7d5ecc2324d4d55419f4d206856475f94552f32bc9c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DGA0Q2386621.
      date published: 2026-07-13T02:37:37Z
    audio: مهرجان جيت ع البايظ هتكبرها عليا
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.998
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.803
      additional property: Energy
        type: PropertyValue
        value: 0.908
      additional property: Speechiness
        type: PropertyValue
        value: 0.065
      additional property: Acousticness
        type: PropertyValue
        value: 0.453
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.099
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.649
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.333
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major