Mankus Marcus
type: MusicGroup
popularity: 8
followers: 169
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x43625df439d2f03bd3d2a846f743131044103a0b2c421e8d577a0043561bd3cf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d23f3cc6-b2d4-44d4-b121-0ae07f8ad14a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d23f3cc6-b2d4-44d4-b121-0ae07f8ad14a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d23f3cc6-b2d4-44d4-b121-0ae07f8ad14a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x43625df439d2f03bd3d2a846f743131044103a0b2c421e8d577a0043561bd3cf","name":"Mankus Marcus","registered_at":"2026-06-21T01:19:38Z","symbol":"NIM1774265","token_address":"0xab53fc16e622fcf9a6c2197eb97f7fe34434374d","type":"artist","uuid":"d23f3cc6-b2d4-44d4-b121-0ae07f8ad14a"}
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 0x43625df439d2f03bd3d2a846f743131044103a0b2c421e8d577a0043561bd3cf. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d23f3cc6-b2d4-44d4-b121-0ae07f8ad14a.json and https://artists.proofprofile.net/proofs/artist/d23f3cc6-b2d4-44d4-b121-0ae07f8ad14a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x43625df439d2f03bd3d2a846f743131044103a0b2c421e8d577a0043561bd3cf","name":"Mankus Marcus","registered_at":"2026-06-21T01:19:38Z","symbol":"NIM1774265","token_address":"0xab53fc16e622fcf9a6c2197eb97f7fe34434374d","type":"artist","uuid":"d23f3cc6-b2d4-44d4-b121-0ae07f8ad14a"}
album: Als Ik Kijk Naar Jou
  type: MusicAlbum
  date published: 2024-03-15
  track: Als Ik Kijk Naar Jou
    type: MusicRecording
    duration: PT4M0S
    duration ms: 240000
    explicit: false
    by artist: Mankus Marcus
    in album: Als Ik Kijk Naar Jou
      type: MusicAlbum
      date published: 2024-03-15
    isrc code: NL5NH2400002
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T03:28:40+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd270199f2e66388ca8e06361b5c043cf63d21744c37f8c41ce9931b2ea219d4e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958823
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958823
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL5NH2400002
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T06:29:47Z
    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 0xd270199f2e66388ca8e06361b5c043cf63d21744c37f8c41ce9931b2ea219d4e. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:29:47Z), 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/NL5NH2400002.
      date published: 2026-07-20T06:29:47Z
    audio: Als Ik Kijk Naar Jou
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.138
      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: 0.393
      additional property: Energy
        type: PropertyValue
        value: 0.666
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.402
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.308
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.203
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.6
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Jij Bent Te Mooi
  type: MusicAlbum
  date published: 2024-10-09
album: Puur Natuur
  type: MusicAlbum
  date published: 2025-05-16
album: Ga als je wilt
  type: MusicAlbum
  date published: 2025-09-26
  track: Ga als je wilt
    type: MusicRecording
    duration: PT3M37S
    duration ms: 217006
    explicit: false
    by artist: Mankus Marcus
    in album: Ga als je wilt
      type: MusicAlbum
      date published: 2025-09-26
    isrc code: NLW2R2396308
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T01:57:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcc631bafe95cf38e1853d8fa08520c3cf0a832c676c3c5a773ce221bf65f1ea3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956474
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW2R2396308
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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 0xcc631bafe95cf38e1853d8fa08520c3cf0a832c676c3c5a773ce221bf65f1ea3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLW2R2396308.
      date published: 2026-07-03T08:56:35Z
    audio: Ga als je wilt
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 170.105
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.442
      additional property: Energy
        type: PropertyValue
        value: 0.753
      additional property: Speechiness
        type: PropertyValue
        value: 0.047
      additional property: Acousticness
        type: PropertyValue
        value: 0.04
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Liveness
type: PropertyValue
value: 0.116

Valence (Positivity)
type: PropertyValue
value: 0.769

Loudness (dB)
type: PropertyValue
value: -6.732

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Major