Jan Rap Kinderkoor
type: MusicGroup
popularity: 5
followers: 119
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc7cf4a7096241cdafee156b58203a81b57afc8012b2684cd79d84bd9763053ac
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954689
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954689
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e3b15f97-e03b-4f81-ab28-be66f5c817ab.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e3b15f97-e03b-4f81-ab28-be66f5c817ab.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e3b15f97-e03b-4f81-ab28-be66f5c817ab
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T10:35:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc7cf4a7096241cdafee156b58203a81b57afc8012b2684cd79d84bd9763053ac","name":"Jan Rap Kinderkoor","registered_at":"2026-06-21T07:27:49Z","symbol":"NIM1862016","token_address":"0x93ebad31aec8de793b9ab418c2eb580031f7c8d4","type":"artist","uuid":"e3b15f97-e03b-4f81-ab28-be66f5c817ab"}
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 0xc7cf4a7096241cdafee156b58203a81b57afc8012b2684cd79d84bd9763053ac. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3b15f97-e03b-4f81-ab28-be66f5c817ab.json and https://artists.proofprofile.net/proofs/artist/e3b15f97-e03b-4f81-ab28-be66f5c817ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T10:35:31Z
  text: {"copyright_id":"0xc7cf4a7096241cdafee156b58203a81b57afc8012b2684cd79d84bd9763053ac","name":"Jan Rap Kinderkoor","registered_at":"2026-06-21T07:27:49Z","symbol":"NIM1862016","token_address":"0x93ebad31aec8de793b9ab418c2eb580031f7c8d4","type":"artist","uuid":"e3b15f97-e03b-4f81-ab28-be66f5c817ab"}
album: 51 Zing en Speelliedjes o.l.v. Jan Rap
  type: MusicAlbum
  date published: 2017-04-07
  track: In het groene dal
    type: MusicRecording
    duration: PT1M34S
    duration ms: 94829
    explicit: false
    by artist: Jan Rap Kinderkoor
    in album: 51 Zing en Speelliedjes o.l.v. Jan Rap
      type: MusicAlbum
      date published: 2017-04-07
    isrc code: NLR1K1729291
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T23:11:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xee6eb468d766fa103412dca2fdff735d9737f04b9b1f4da0d3559181b950b792
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958468
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958468
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLR1K1729291
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T00:27:51Z
    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 0xee6eb468d766fa103412dca2fdff735d9737f04b9b1f4da0d3559181b950b792. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/NLR1K1729291.
      date published: 2026-07-18T00:27:51Z
    audio: In het groene dal
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.084
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.55
      additional property: Energy
        type: PropertyValue
        value: 0.23
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.984
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.123
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.655
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.823
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sint Nicolaas Liedjes
  type: MusicAlbum
  date published: 2017-05-10
album: TV Liedjes
  type: MusicAlbum
  date published: 2017-06-03
album: Kerstliedjes
  type: MusicAlbum
  date published: 2019-03-15