Jack Makkia
type: MusicGroup
genre: hardcore
popularity: 4
followers: 127
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6fb842cbd806e9a900ee4abcc8d17d164e6fa7102dbfa1e7bd81ee1aee26b6e2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953972
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953972
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2aefaf94-d8b5-47e9-bd95-1dae1881a8df.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2aefaf94-d8b5-47e9-bd95-1dae1881a8df.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2aefaf94-d8b5-47e9-bd95-1dae1881a8df
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:31:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6fb842cbd806e9a900ee4abcc8d17d164e6fa7102dbfa1e7bd81ee1aee26b6e2","name":"Jack Makkia","registered_at":"2026-06-16T04:28:01Z","symbol":"NIM0937385","token_address":"0xdbec795284443f4b346bdea199171cca70f8c11f","type":"artist","uuid":"2aefaf94-d8b5-47e9-bd95-1dae1881a8df"}
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 0x6fb842cbd806e9a900ee4abcc8d17d164e6fa7102dbfa1e7bd81ee1aee26b6e2. Chain 2 (Bitcoin): anchored in block 953972 (2026-06-16T16:31:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2aefaf94-d8b5-47e9-bd95-1dae1881a8df.json and https://artists.proofprofile.net/proofs/artist/2aefaf94-d8b5-47e9-bd95-1dae1881a8df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:31:10Z
  text: {"copyright_id":"0x6fb842cbd806e9a900ee4abcc8d17d164e6fa7102dbfa1e7bd81ee1aee26b6e2","name":"Jack Makkia","registered_at":"2026-06-16T04:28:01Z","symbol":"NIM0937385","token_address":"0xdbec795284443f4b346bdea199171cca70f8c11f","type":"artist","uuid":"2aefaf94-d8b5-47e9-bd95-1dae1881a8df"}
album: Hardcore Soul
  type: MusicAlbum
  date published: 2011-05-27
album: Cambiare Idea
  type: MusicAlbum
  date published: 2021-01-20
album: L'istante in cui la notte muore
  type: MusicAlbum
  date published: 2021-03-30
album: Lettera dal Coronavirus all'umanità
  type: MusicAlbum
  date published: 2021-04-14
album: Non lo so
  type: MusicAlbum
  date published: 2023-03-23
album: Quello Che Non Hai
  type: MusicAlbum
  date published: 2023-11-07
album: Jack is Back
  type: MusicAlbum
  date published: 2025-01-30
  track: Back In The Days
    type: MusicRecording
    duration: PT2M44S
    duration ms: 164479
    explicit: true
    by artist: Jack Makkia
    in album: Jack is Back
      type: MusicAlbum
      date published: 2025-01-30
    genre: hardcore
    isrc code: TCAJE2510624
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-22T03:07:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa057793850cdfc4d8808832408f4136caec1bc496015d4c711a6125360c30f6b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956304
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJE2510624
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:55:08Z
    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 0xa057793850cdfc4d8808832408f4136caec1bc496015d4c711a6125360c30f6b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAJE2510624.
      date published: 2026-07-02T03:55:08Z
    audio: Back In The Days
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.242
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.487
      additional property: Energy
        type: PropertyValue
        value: 0.914
      additional property: Speechiness
        type: PropertyValue
        value: 0.204
      additional property: Acousticness
        type: PropertyValue
        value: 0.064
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.158
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.304
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.157
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor