Marjo & Johnny Blenco
type: MusicGroup
popularity: 7
followers: 382
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4150aa0643acbf5dcc89eee29be6509fe30d5e94db741c09fc5946bcca75570a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953899
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953899
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/10f08194-c254-41e0-8636-4270ce255d0a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/10f08194-c254-41e0-8636-4270ce255d0a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/10f08194-c254-41e0-8636-4270ce255d0a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:37:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4150aa0643acbf5dcc89eee29be6509fe30d5e94db741c09fc5946bcca75570a","name":"Marjo & Johnny Blenco","registered_at":"2026-06-15T19:41:46Z","symbol":"NIM0811780","token_address":"0x6594197fd1d35fdee135824618f408e14f1a97cc","type":"artist","uuid":"10f08194-c254-41e0-8636-4270ce255d0a"}
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 0x4150aa0643acbf5dcc89eee29be6509fe30d5e94db741c09fc5946bcca75570a. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10f08194-c254-41e0-8636-4270ce255d0a.json and https://artists.proofprofile.net/proofs/artist/10f08194-c254-41e0-8636-4270ce255d0a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:37:25Z
  text: {"copyright_id":"0x4150aa0643acbf5dcc89eee29be6509fe30d5e94db741c09fc5946bcca75570a","name":"Marjo & Johnny Blenco","registered_at":"2026-06-15T19:41:46Z","symbol":"NIM0811780","token_address":"0x6594197fd1d35fdee135824618f408e14f1a97cc","type":"artist","uuid":"10f08194-c254-41e0-8636-4270ce255d0a"}
album: `t Leve kin zoe sjoen zien
  type: MusicAlbum
  date published: 2015-03-21
album: Dee Sjoenen Tied
  type: MusicAlbum
  date published: 2015-03-21
  track: Dee Sjoenen Tied
    type: MusicRecording
    duration: PT4M37S
    duration ms: 277000
    explicit: false
    by artist: Marjo & Johnny Blenco
    in album: Dee Sjoenen Tied
      type: MusicAlbum
      date published: 2015-03-21
    isrc code: NLW2R1713991
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T17:04:50+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcaa8a7f9f18e4125c3c02f7f28ded8eca0845116c6ea231ea8288fcd31c53985
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956551
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956551
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW2R1713991
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T21:18:05Z
    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 0xcaa8a7f9f18e4125c3c02f7f28ded8eca0845116c6ea231ea8288fcd31c53985. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLW2R1713991.
      date published: 2026-07-03T21:18:05Z
    audio: Dee Sjoenen Tied
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 169.997
      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: 0.598
      additional property: Energy
        type: PropertyValue
        value: 0.668
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.223
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.1
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.902
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.953
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Op `t Vriethof op `n baank
    type: MusicRecording
    duration: PT3M17S
    duration ms: 197000
    explicit: false
    by artist: Marjo & Johnny Blenco
    in album: Dee Sjoenen Tied
      type: MusicAlbum
      date published: 2015-03-21
    isrc code: NLW2R1714005
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T09:35:40+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x884af1d360764d5ea8a0d3ce4c8776ec89808bc2c0e427c1c2579b2fd4cf6010
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957820
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957820
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW2R1714005
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T07:54:01Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884af1d360764d5ea8a0d3ce4c8776ec89808bc2c0e427c1c2579b2fd4cf6010. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NLW2R1714005.
      date published: 2026-07-13T07:54:01Z
    audio: Op `t Vriethof op `n baank
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 89.897
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.592
      additional property: Energy
        type: PropertyValue
        value: 0.417
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.693
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.342
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.465
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: 't Leve kin zoe sjoen zien

Loudness (dB)
type: PropertyValue
value: -9.286

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

Dee Sjoenen Tied
type: MusicAlbum
date published: 2015-03-22

't Leve kin zoe sjoen zien
type: MusicAlbum
date published: 2015-03-22