Marcus Stone
type: MusicGroup
description: Marcus Clayton Stone (4 July 1840 – 24 March 1921) was an English painter. Stone was born in London, and was educated at the Royal Academy. Life Marcus Clayton Stone was the son of Frank Stone ARA.
popularity: 4
followers: 47
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x45324c0e8b7090eb1f9d4b45a459f92a1caf97b529a4369cab7cdfa1fd1316bb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6eb1516b-a0d0-4d96-8b05-93aa62864828.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6eb1516b-a0d0-4d96-8b05-93aa62864828.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6eb1516b-a0d0-4d96-8b05-93aa62864828
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x45324c0e8b7090eb1f9d4b45a459f92a1caf97b529a4369cab7cdfa1fd1316bb","name":"Marcus Stone","registered_at":"2026-06-17T04:13:56Z","symbol":"NIM1277658","token_address":"0xe47f1f979e0900ba52b1c70fc6c63c25e2a2cced","type":"artist","uuid":"6eb1516b-a0d0-4d96-8b05-93aa62864828"}
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 0x45324c0e8b7090eb1f9d4b45a459f92a1caf97b529a4369cab7cdfa1fd1316bb. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6eb1516b-a0d0-4d96-8b05-93aa62864828.json and https://artists.proofprofile.net/proofs/artist/6eb1516b-a0d0-4d96-8b05-93aa62864828.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x45324c0e8b7090eb1f9d4b45a459f92a1caf97b529a4369cab7cdfa1fd1316bb","name":"Marcus Stone","registered_at":"2026-06-17T04:13:56Z","symbol":"NIM1277658","token_address":"0xe47f1f979e0900ba52b1c70fc6c63c25e2a2cced","type":"artist","uuid":"6eb1516b-a0d0-4d96-8b05-93aa62864828"}
album: Take Me To Church
  type: MusicAlbum
  date published: 2023-05-14
album: Shining On Me
  type: MusicAlbum
  date published: 2025-02-07
album: Ordinary
  type: MusicAlbum
  date published: 2025-03-21
  track: Ordinary
    type: MusicRecording
    duration: PT2M34S
    duration ms: 154206
    explicit: false
    by artist: Marcus Stone
    in album: Ordinary
      type: MusicAlbum
      date published: 2025-03-21
    isrc code: QZK6M2503116
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T00:17:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdeb4b9bb807cdd9f1c90a4b22d508dc7cbaa0e41ee61b5456610598ffdc07478
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6M2503116
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0xdeb4b9bb807cdd9f1c90a4b22d508dc7cbaa0e41ee61b5456610598ffdc07478. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6M2503116.
      date published: 2026-07-04T10:04:33Z
    audio: Ordinary
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 167.698
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.417
      additional property: Energy
        type: PropertyValue
        value: 0.555
      additional property: Speechiness
        type: PropertyValue
        value: 0.093
      additional property: Acousticness
        type: PropertyValue
        value: 0.367
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.112
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.204
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.127
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major