Massimiliano De Marco
type: MusicGroup
popularity: 10
followers: 138
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc5f5eac31b9937c2279e6337fc57af42cb065c0772edbc80bfeb91a8ceac03b3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954553
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954553
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aca77092-7a0e-4802-b21b-bf8f4dd81818.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aca77092-7a0e-4802-b21b-bf8f4dd81818.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aca77092-7a0e-4802-b21b-bf8f4dd81818
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T11:51:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc5f5eac31b9937c2279e6337fc57af42cb065c0772edbc80bfeb91a8ceac03b3","name":"Massimiliano De Marco","registered_at":"2026-06-20T09:53:00Z","symbol":"NIM1585431","token_address":"0xf619b6a6a8e2083b5113b592ce78ef356479800a","type":"artist","uuid":"aca77092-7a0e-4802-b21b-bf8f4dd81818"}
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 0xc5f5eac31b9937c2279e6337fc57af42cb065c0772edbc80bfeb91a8ceac03b3. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aca77092-7a0e-4802-b21b-bf8f4dd81818.json and https://artists.proofprofile.net/proofs/artist/aca77092-7a0e-4802-b21b-bf8f4dd81818.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T11:51:30Z
  text: {"copyright_id":"0xc5f5eac31b9937c2279e6337fc57af42cb065c0772edbc80bfeb91a8ceac03b3","name":"Massimiliano De Marco","registered_at":"2026-06-20T09:53:00Z","symbol":"NIM1585431","token_address":"0xf619b6a6a8e2083b5113b592ce78ef356479800a","type":"artist","uuid":"aca77092-7a0e-4802-b21b-bf8f4dd81818"}
album: Pizzica salentina (The Sound of Puglia)
  type: MusicAlbum
  date published: 2022-07-16
  track: Pizzica salentina
    type: MusicRecording
    duration: PT3M42S
    duration ms: 222823
    explicit: false
    by artist: Massimiliano De Marco
    in album: Pizzica salentina (The Sound of Puglia)
      type: MusicAlbum
      date published: 2022-07-16
    isrc code: IT7152292901
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T05:11:32+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8afe12f1c83a8352eb5619abf85afa83d399d5cbba36b4ddb402cff3ddeef9de
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958246
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958246
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IT7152292901
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T08:07:35Z
    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 0x8afe12f1c83a8352eb5619abf85afa83d399d5cbba36b4ddb402cff3ddeef9de. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:07:35Z), 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/IT7152292901.
      date published: 2026-07-16T08:07:35Z
    audio: Pizzica salentina
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 93.017
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.632
      additional property: Energy
        type: PropertyValue
        value: 0.842
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.041
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.303
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.568
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.638
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major