Kinderkoor Zing Maar Mee
type: MusicGroup
genre: children's music
popularity: 6
followers: 620
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x517df4f58974f7f94accafc51ac142c68a54d2b078d3c7d349488412ee4145db
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954553
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954553
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/abb92913-d47a-4ceb-aa17-690553c542a3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/abb92913-d47a-4ceb-aa17-690553c542a3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/abb92913-d47a-4ceb-aa17-690553c542a3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T11:51:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x517df4f58974f7f94accafc51ac142c68a54d2b078d3c7d349488412ee4145db","name":"Kinderkoor Zing Maar Mee","registered_at":"2026-06-20T09:27:32Z","symbol":"NIM1582548","token_address":"0x3d78bb1ceba75d5d06779850ab7c3ad9956d2c89","type":"artist","uuid":"abb92913-d47a-4ceb-aa17-690553c542a3"}
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 0x517df4f58974f7f94accafc51ac142c68a54d2b078d3c7d349488412ee4145db. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abb92913-d47a-4ceb-aa17-690553c542a3.json and https://artists.proofprofile.net/proofs/artist/abb92913-d47a-4ceb-aa17-690553c542a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T11:51:30Z
  text: {"copyright_id":"0x517df4f58974f7f94accafc51ac142c68a54d2b078d3c7d349488412ee4145db","name":"Kinderkoor Zing Maar Mee","registered_at":"2026-06-20T09:27:32Z","symbol":"NIM1582548","token_address":"0x3d78bb1ceba75d5d06779850ab7c3ad9956d2c89","type":"artist","uuid":"abb92913-d47a-4ceb-aa17-690553c542a3"}
album: Liedjes Over Je Lichaam
  type: MusicAlbum
  date published: 2006-01-01
  track: Met M'n Eendje In Bad
    type: MusicRecording
    duration: PT2M19S
    duration ms: 139573
    explicit: false
    by artist: Kinderkoor Zing Maar Mee
    in album: Liedjes Over Je Lichaam
      type: MusicAlbum
      date published: 2006-01-01
    genre: children's music
    isrc code: NLUM70500619
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T06:22:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9b0a0a4777dde67fb32d6b89234d12754911310663d3c4e701895f8e7f4ca0d5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958377
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958377
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLUM70500619
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T06:48:00Z
    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 0x9b0a0a4777dde67fb32d6b89234d12754911310663d3c4e701895f8e7f4ca0d5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NLUM70500619.
      date published: 2026-07-17T06:48:00Z
    audio: Met M'n Eendje In Bad
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 110.029
      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: 0.834
      additional property: Energy
        type: PropertyValue
        value: 0.519
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.643
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.188
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.927
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.196
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Liedjes Voor Je Verjaardag
  type: MusicAlbum
  date published: 2006-01-01
album: Liedjes Over Vormen
  type: MusicAlbum
  date published: 2006-01-01
album: Liedjes Over Letters En Lezen
  type: MusicAlbum
  date published: 2006-01-01
album: Liedjes Over Tellen En Getallen
  type: MusicAlbum
  date published: 2006-01-01
album: Liedjes uit Het Grote Bos
  type: MusicAlbum
  date published: 2006-01-01
album: Liedjes Over Opgroeien
  type: MusicAlbum
  date published: 2006-01-01
album: Liedjes Over Kerst
  type: MusicAlbum
  date published: 2006-01-01
album: Liedjes Over Kleuren
  type: MusicAlbum
  date published: 2006-01-01