Mahdi Feredj
type: MusicGroup
popularity: 3
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfc5e681626ae84776851362ffa025b74fe174abe3a51473a874cfa997ea7c061
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/f87fe4b1-299c-4b11-b8a5-5263954c271f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f87fe4b1-299c-4b11-b8a5-5263954c271f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f87fe4b1-299c-4b11-b8a5-5263954c271f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfc5e681626ae84776851362ffa025b74fe174abe3a51473a874cfa997ea7c061","name":"Mahdi Feredj","registered_at":"2026-06-21T16:20:05Z","symbol":"NIM1967869","token_address":"0x98271b083f08f8ccc34133cf6831857ad67068f1","type":"artist","uuid":"f87fe4b1-299c-4b11-b8a5-5263954c271f"}
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 0xfc5e681626ae84776851362ffa025b74fe174abe3a51473a874cfa997ea7c061. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f87fe4b1-299c-4b11-b8a5-5263954c271f.json and https://artists.proofprofile.net/proofs/artist/f87fe4b1-299c-4b11-b8a5-5263954c271f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:16:07Z
  text: {"copyright_id":"0xfc5e681626ae84776851362ffa025b74fe174abe3a51473a874cfa997ea7c061","name":"Mahdi Feredj","registered_at":"2026-06-21T16:20:05Z","symbol":"NIM1967869","token_address":"0x98271b083f08f8ccc34133cf6831857ad67068f1","type":"artist","uuid":"f87fe4b1-299c-4b11-b8a5-5263954c271f"}
album: Somewhere Only We Know (cover)
  type: MusicAlbum
  date published: 2024-11-14
  track: Somewhere Only We Know - cover
    type: MusicRecording
    duration: PT3M12S
    duration ms: 192989
    explicit: false
    by artist: Mahdi Feredj
    in album: Somewhere Only We Know (cover)
      type: MusicAlbum
      date published: 2024-11-14
    isrc code: QZZ7L2458148
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T15:35:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb9da024d67376b3251ecc45bd382c7479dc9477f2ba0954ad5c11cbddd0d5552
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958448
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958448
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7L2458148
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:49:21Z
    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 0xb9da024d67376b3251ecc45bd382c7479dc9477f2ba0954ad5c11cbddd0d5552. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZZ7L2458148.
      date published: 2026-07-17T19:49:21Z
    audio: Somewhere Only We Know - cover
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 84.026
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.565
      additional property: Energy
        type: PropertyValue
        value: 0.331
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.897
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.094
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.414
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.745
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: T'aimer de nouveau
  type: MusicAlbum
  date published: 2024-11-14
album: Toxic (acoustic)
  type: MusicAlbum
  date published: 2024-11-14