Matteo Braccia
type: MusicGroup
popularity: 4
followers: 71
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcbf386eed14917e2f55ba93aa72abb1abb4335ec6bafbbd6f1a746468d4b9d33
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953896
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953896
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/11556ed2-94ee-4d30-8698-1bcf0a43d584.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/11556ed2-94ee-4d30-8698-1bcf0a43d584.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/11556ed2-94ee-4d30-8698-1bcf0a43d584
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:05:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcbf386eed14917e2f55ba93aa72abb1abb4335ec6bafbbd6f1a746468d4b9d33","name":"Matteo Braccia","registered_at":"2026-06-15T19:27:27Z","symbol":"NIM0808355","token_address":"0x0011091d0177e4da7716e006a6949464f3a74fbd","type":"artist","uuid":"11556ed2-94ee-4d30-8698-1bcf0a43d584"}
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 0xcbf386eed14917e2f55ba93aa72abb1abb4335ec6bafbbd6f1a746468d4b9d33. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11556ed2-94ee-4d30-8698-1bcf0a43d584.json and https://artists.proofprofile.net/proofs/artist/11556ed2-94ee-4d30-8698-1bcf0a43d584.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0xcbf386eed14917e2f55ba93aa72abb1abb4335ec6bafbbd6f1a746468d4b9d33","name":"Matteo Braccia","registered_at":"2026-06-15T19:27:27Z","symbol":"NIM0808355","token_address":"0x0011091d0177e4da7716e006a6949464f3a74fbd","type":"artist","uuid":"11556ed2-94ee-4d30-8698-1bcf0a43d584"}
album: 2020 Memories
  type: MusicAlbum
  date published: 2025-06-20
  track: 2020 Memories
    type: MusicRecording
    duration: PT2M28S
    duration ms: 148480
    explicit: false
    by artist: Matteo Braccia
    in album: 2020 Memories
      type: MusicAlbum
      date published: 2025-06-20
    isrc code: QZTB32583230
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T05:32:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xee38ec6d3c02739e26990533704777de7a8d7afacd7d9414c39f4194e7ee84fd
    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/QZTB32583230
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T08:34:05Z
    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 0xee38ec6d3c02739e26990533704777de7a8d7afacd7d9414c39f4194e7ee84fd. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:34:05Z), 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/QZTB32583230.
      date published: 2026-07-16T08:34:05Z
    audio: 2020 Memories
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 78.447
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.524
      additional property: Energy
        type: PropertyValue
        value: 0.227
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.861
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.112
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.519
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.743
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: How do I love you?
  type: MusicAlbum
  date published: 2025-07-18