Robert Matthews
type: MusicGroup
genre: blues
genre: jazz blues
description: Robert Matthews may refer to: Sports Robert William Matthews (1897–1987), Welsh footballer Robert Matthews (athlete) (1961–2018), British paralympic athlete Rob Matthews (footballer) (born 1970),
popularity: 3
followers: 40
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5f4fee60d80612b7e55e32edb25ae905c0face41936e75559515588b9117cd8e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/935f9bf1-dc8f-4a37-bfa5-d65d15abf61b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/935f9bf1-dc8f-4a37-bfa5-d65d15abf61b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/935f9bf1-dc8f-4a37-bfa5-d65d15abf61b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5f4fee60d80612b7e55e32edb25ae905c0face41936e75559515588b9117cd8e","name":"Robert Matthews","registered_at":"2026-06-17T17:07:14Z","symbol":"NIM1462039","token_address":"0xcd7a9f1c66bbc8ec579fcc4808126a1761d43a08","type":"artist","uuid":"935f9bf1-dc8f-4a37-bfa5-d65d15abf61b"}
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 0x5f4fee60d80612b7e55e32edb25ae905c0face41936e75559515588b9117cd8e. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/935f9bf1-dc8f-4a37-bfa5-d65d15abf61b.json and https://artists.proofprofile.net/proofs/artist/935f9bf1-dc8f-4a37-bfa5-d65d15abf61b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x5f4fee60d80612b7e55e32edb25ae905c0face41936e75559515588b9117cd8e","name":"Robert Matthews","registered_at":"2026-06-17T17:07:14Z","symbol":"NIM1462039","token_address":"0xcd7a9f1c66bbc8ec579fcc4808126a1761d43a08","type":"artist","uuid":"935f9bf1-dc8f-4a37-bfa5-d65d15abf61b"}
album: Surrounded By Friends
  type: MusicAlbum
  date published: 2008-01-29
  track: Rio De Janeiro Blue
    type: MusicRecording
    duration: PT3M59S
    duration ms: 239626
    explicit: false
    by artist: Robert Matthews
    in album: Surrounded By Friends
      type: MusicAlbum
      date published: 2008-01-29
    genre: blues
    genre: jazz blues
    isrc code: USCGJ0754275
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T19:40:01+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0dfb8ac84a74e30b2a4d161000a7b764ff31943e3c2335e3eac76be4ade63d00
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958931
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958931
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ0754275
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T21:15:01Z
    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 0x0dfb8ac84a74e30b2a4d161000a7b764ff31943e3c2335e3eac76be4ade63d00. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USCGJ0754275.
      date published: 2026-07-20T21:15:01Z
    audio: Rio De Janeiro Blue
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 125.415
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.615
      additional property: Energy
        type: PropertyValue
        value: 0.324
      additional property: Speechiness
        type: PropertyValue
        value: 0.052
      additional property: Acousticness
        type: PropertyValue
        value: 0.821
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.202
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.562
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.982
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Anchor
  type: MusicAlbum
  date published: 2009-08-01
album: Venines
  type: MusicAlbum
  date published: 2022-08-10
album: Vefatites
  type: MusicAlbum
  date published: 2022-08-10