Jan Mittendorp
type: MusicGroup
genre: blues rock
popularity: 5
followers: 157
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4b25a48bcef977ccc1843fb72490f3796270a1d6761fd564fe04961260abb191
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4ca15771-6acd-4a04-9154-b2881a156131.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4ca15771-6acd-4a04-9154-b2881a156131.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4ca15771-6acd-4a04-9154-b2881a156131
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4b25a48bcef977ccc1843fb72490f3796270a1d6761fd564fe04961260abb191","name":"Jan Mittendorp","registered_at":"2026-06-16T16:16:08Z","symbol":"NIM1106387","token_address":"0xf4509646347c1d157777f147c61e0aac2824c0bf","type":"artist","uuid":"4ca15771-6acd-4a04-9154-b2881a156131"}
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 0x4b25a48bcef977ccc1843fb72490f3796270a1d6761fd564fe04961260abb191. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ca15771-6acd-4a04-9154-b2881a156131.json and https://artists.proofprofile.net/proofs/artist/4ca15771-6acd-4a04-9154-b2881a156131.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x4b25a48bcef977ccc1843fb72490f3796270a1d6761fd564fe04961260abb191","name":"Jan Mittendorp","registered_at":"2026-06-16T16:16:08Z","symbol":"NIM1106387","token_address":"0xf4509646347c1d157777f147c61e0aac2824c0bf","type":"artist","uuid":"4ca15771-6acd-4a04-9154-b2881a156131"}
album: Blue Strings EP
  type: MusicAlbum
  date published: 2015-01-01
album: Cigar Box Blues - EP
  type: MusicAlbum
  date published: 2015-08-10
album: Slide Guitar Blues - EP
  type: MusicAlbum
  date published: 2015-08-12
album: Bluguitar
  type: MusicAlbum
  date published: 2015-08-15
album: Blue Strings EP
  type: MusicAlbum
  date published: 2015-11-20
  track: Northmiss
    type: MusicRecording
    duration: PT2M10S
    duration ms: 130250
    explicit: false
    by artist: Jan Mittendorp
    in album: Blue Strings EP
      type: MusicAlbum
      date published: 2015-11-20
    genre: blues rock
    isrc code: NLE931500065
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T19:12:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x11a07a098d77ffba49b23ec171d1a780ecd51e1f96ef426153239116c4b7625f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958931
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958931
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE931500065
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T21:15:01Z
    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 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 0x11a07a098d77ffba49b23ec171d1a780ecd51e1f96ef426153239116c4b7625f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NLE931500065.
      date published: 2026-07-20T21:15:01Z
    audio: Northmiss
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.902
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.754
      additional property: Energy
        type: PropertyValue
        value: 0.596
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.889
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.845
      additional property: Liveness
        type: PropertyValue
        value: 0.307
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.322
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.687
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Blues Doodles EP
  type: MusicAlbum
  date published: 2016-01-15
album: Blues Doodles 2 EP
  type: MusicAlbum
  date published: 2016-02-19
album: Blues Doodles 3 EP
  type: MusicAlbum
  date published: 2016-05-23
album: St James Infirmary
  type: MusicAlbum
  date published: 2018-07-13
album: Baritone Jazz 1 EP
  type: MusicAlbum
  date published: 2018-07-25
album: Baritone Jazz 2
  type: MusicAlbum
  date published: 2018-09-04
album: Blues Doodles 4 EP
  type: MusicAlbum
  date published: 2021-06-20