Marvin McMahon
type: MusicGroup
popularity: 4
followers: 44
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xffb7808008cbf1ad5e363953cd4c253ffeafc4f637c81e43341ceb72f48c6d68
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fd739197-3642-4b29-8de0-71c10a03a5c1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fd739197-3642-4b29-8de0-71c10a03a5c1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fd739197-3642-4b29-8de0-71c10a03a5c1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xffb7808008cbf1ad5e363953cd4c253ffeafc4f637c81e43341ceb72f48c6d68","name":"Marvin McMahon","registered_at":"2026-06-21T17:40:15Z","symbol":"NIM1989906","token_address":"0x175ed95fbc9a6c1e13ad1f0e7e93a025ef8798ef","type":"artist","uuid":"fd739197-3642-4b29-8de0-71c10a03a5c1"}
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 0xffb7808008cbf1ad5e363953cd4c253ffeafc4f637c81e43341ceb72f48c6d68. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd739197-3642-4b29-8de0-71c10a03a5c1.json and https://artists.proofprofile.net/proofs/artist/fd739197-3642-4b29-8de0-71c10a03a5c1.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0xffb7808008cbf1ad5e363953cd4c253ffeafc4f637c81e43341ceb72f48c6d68","name":"Marvin McMahon","registered_at":"2026-06-21T17:40:15Z","symbol":"NIM1989906","token_address":"0x175ed95fbc9a6c1e13ad1f0e7e93a025ef8798ef","type":"artist","uuid":"fd739197-3642-4b29-8de0-71c10a03a5c1"}
album: Cinematic Guitars
  type: MusicAlbum
  date published: 2019-09-05
album: Nordic Noir
  type: MusicAlbum
  date published: 2019-10-04
album: Piano Pop
  type: MusicAlbum
  date published: 2023-05-09
track: Day in the Park
  type: MusicRecording
  duration: PT1M35S
  duration ms: 95268
  explicit: false
  by artist: Marvin McMahon
  in album: Hope and Happy End, Vol. 3
    type: MusicAlbum
    date published: 2022-03-11
  popularity: 14
  isrc code: DEUF82010617
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-24T19:46:37+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xbede7e16cce33ec3fbdce51a84d71044f64282ee93c8cf196f33655852e75f45
  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/DEUF82010617
  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 0xbede7e16cce33ec3fbdce51a84d71044f64282ee93c8cf196f33655852e75f45. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUF82010617 — a six-check JSON result.
    date published: 2026-07-02T03:55:08Z
  audio: Day in the Park
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 124.806
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.733
    additional property: Energy
      type: PropertyValue
      value: 0.495
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.239
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.772
    additional property: Liveness
      type: PropertyValue
      value: 0.098
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.396
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.784
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major