21 Marlo
type: MusicGroup
popularity: 7
followers: 793
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbeb887a349c789128d0fb135472dca0916640ab50c8837b76ea92a5d2c98af52
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/872b35a5-d208-4b7d-bfa8-1da7a5165b22.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/872b35a5-d208-4b7d-bfa8-1da7a5165b22.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/872b35a5-d208-4b7d-bfa8-1da7a5165b22
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbeb887a349c789128d0fb135472dca0916640ab50c8837b76ea92a5d2c98af52","name":"21 Marlo","registered_at":"2026-06-17T12:50:47Z","symbol":"NIM1400828","token_address":"0x174a17958e9c830bd65eb3d422c10ce6dd74bb0c","type":"artist","uuid":"872b35a5-d208-4b7d-bfa8-1da7a5165b22"}
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 0xbeb887a349c789128d0fb135472dca0916640ab50c8837b76ea92a5d2c98af52. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/872b35a5-d208-4b7d-bfa8-1da7a5165b22.json and https://artists.proofprofile.net/proofs/artist/872b35a5-d208-4b7d-bfa8-1da7a5165b22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xbeb887a349c789128d0fb135472dca0916640ab50c8837b76ea92a5d2c98af52","name":"21 Marlo","registered_at":"2026-06-17T12:50:47Z","symbol":"NIM1400828","token_address":"0x174a17958e9c830bd65eb3d422c10ce6dd74bb0c","type":"artist","uuid":"872b35a5-d208-4b7d-bfa8-1da7a5165b22"}
album: Run It Up
  type: MusicAlbum
  date published: 2021-04-01
album: Nikes keine Vans
  type: MusicAlbum
  date published: 2021-09-09
  track: Nikes keine Vans
    type: MusicRecording
    duration: PT2M48S
    duration ms: 168175
    explicit: true
    by artist: 21 Marlo
    in album: Nikes keine Vans
      type: MusicAlbum
      date published: 2021-09-09
    isrc code: QZMEM2182897
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T14:14:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9981eb59011e336daccf7128affd71d1d736714e0967e7eef8804e5f02ed4782
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2182897
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0x9981eb59011e336daccf7128affd71d1d736714e0967e7eef8804e5f02ed4782. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMEM2182897.
      date published: 2026-07-05T01:12:41Z
    audio: Nikes keine Vans
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.138
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.877
      additional property: Energy
        type: PropertyValue
        value: 0.735
      additional property: Speechiness
        type: PropertyValue
        value: 0.18
      additional property: Acousticness
        type: PropertyValue
        value: 0.15
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.067
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.706
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.936
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Triathlon
  type: MusicAlbum
  date published: 2022-02-17
album: Straight Bars
  type: MusicAlbum
  date published: 2022-06-16
  track: Five Guys
    type: MusicRecording
    duration: PT2M14S
    duration ms: 134328
    explicit: true
    by artist: 21 Marlo
    in album: Straight Bars
      type: MusicAlbum
      date published: 2022-06-16
    isrc code: QZK6P2263347
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T19:24:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3990ffe4e02f6bc68953f7d08373c578a0ba36769bbce923dfdb7ebb8025e3dd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959051
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959051
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2263347
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T19:48:03Z
    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 0x3990ffe4e02f6bc68953f7d08373c578a0ba36769bbce923dfdb7ebb8025e3dd. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZK6P2263347.
      date published: 2026-07-21T19:48:03Z
    audio: Five Guys
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 133.999
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.905
      additional property: Energy
        type: PropertyValue
        value: 0.642
      additional property: Speechiness
        type: PropertyValue
        value: 0.389
      additional property: Acousticness
        type: PropertyValue
        value: 0.02
      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
album: Granini
album: Mr.Clean
album: Pompeji
album: Mood
album: Irgend so ein Rapper
album: Fuego
album: Florida Flow
album: LIFTED
album: Splashin In Germany
album: Treibsand
album: H!M

Liveness
type: PropertyValue
value: 0.092

Valence (Positivity)
type: PropertyValue
value: 0.353

Loudness (dB)
type: PropertyValue
value: -7.243

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Major

Granini
type: MusicAlbum
date published: 2023-02-16

Mr.Clean
type: MusicAlbum
date published: 2023-07-06

Pompeji
type: MusicAlbum
date published: 2023-08-10

Mood
type: MusicAlbum
date published: 2023-09-14

Irgend so ein Rapper
type: MusicAlbum
date published: 2023-12-07

Fuego
type: MusicAlbum
date published: 2023-12-14

Florida Flow
type: MusicAlbum
date published: 2024-04-25

LIFTED
type: MusicAlbum
date published: 2024-06-13

Splashin In Germany
type: MusicAlbum
date published: 2025-03-13

Treibsand
type: MusicAlbum
date published: 2025-05-01

H!M
type: MusicAlbum
date published: 2025-07-31