Anja
type: MusicGroup
genre: nederpop
genre: polka
popularity: 11
followers: 423
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9355fb75f6792e8fda4348b55cae492a10f4aef17460413b33383568d6be765e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953770
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953770
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c4a3a0cf-1128-4202-9149-39103e851d11.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c4a3a0cf-1128-4202-9149-39103e851d11.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c4a3a0cf-1128-4202-9149-39103e851d11
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T09:50:11Z
additional property: OTSCanonicalRecord
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 0x9355fb75f6792e8fda4348b55cae492a10f4aef17460413b33383568d6be765e. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4a3a0cf-1128-4202-9149-39103e851d11.json and https://artists.proofprofile.net/proofs/artist/c4a3a0cf-1128-4202-9149-39103e851d11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T09:50:11Z
album: Speel Niet Met Mij / 't Was een Heerlijke Avond Cherie
  type: MusicAlbum
  date published: 1969-10-20
album: Anja
  type: MusicAlbum
  date published: 1969-10-23
album: Waarom Cherie?
  type: MusicAlbum
  date published: 1970-05-21
album: Oh, Had Ik Het Maar Geweten / Jij Hebt Me Belogen
  type: MusicAlbum
  date published: 1970-10-20
album: Nemen en Geven / Ik Hou Niet van Jou
  type: MusicAlbum
  date published: 1970-10-20
album: Witte Orchideeën
  type: MusicAlbum
  date published: 1970-11-06
  track: Rikketik, Mijn Hart
    type: MusicRecording
    duration: PT2M27S
    duration ms: 147000
    explicit: false
    by artist: Anja
    in album: Witte Orchideeën
      type: MusicAlbum
      date published: 1970-11-06
    genre: nederpop
    genre: polka
    isrc code: NLE321802283
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T23:25:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x16e03b93cf851d16da63059ecfc09280db653b34e5e38c1b00f0ee9e2b86971b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958340
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958340
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE321802283
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T00:53:26Z
    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 0x16e03b93cf851d16da63059ecfc09280db653b34e5e38c1b00f0ee9e2b86971b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NLE321802283.
      date published: 2026-07-17T00:53:26Z
    audio: Rikketik, Mijn Hart
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 121.594
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.799
      additional property: Energy
        type: PropertyValue
        value: 0.485
      additional property: Speechiness
        type: PropertyValue
        value: 0.099
      additional property: Acousticness
        type: PropertyValue
        value: 0.535
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.186
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.932
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.373
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Nu Dans Je Nooit Meer Met Mij
  type: MusicAlbum
  date published: 1971-01-16
album: Jaren Komen, Jaren Gaan
  type: MusicAlbum
  date published: 1971-01-16
album: Ieder Huisje Heeft Zijn Kruisje
  type: MusicAlbum
  date published: 1971-01-16
album: Jaren Komen, Jaren Gaan
  type: MusicAlbum
  date published: 1971-05-21
album: Nu Dans Je Nooit Meer Met Mij / Jouw Laatste Kus
  type: MusicAlbum
  date published: 1971-05-21
album: Ik Laat Je Niet Gaan / Geloof Me
  type: MusicAlbum
  date published: 1971-10-20
album: Durf Me Niet Te Bedriegen / Elke Avond Zal Ik Aan Je Denken
  type: MusicAlbum
  date published: 1972-02-02
album: Laat De Rozen Verwelken / Huil Niet Als Je Danst
  type: MusicAlbum
  date published: 1972-02-02
album: Spreken Is Zilver, Zwijgen Is Goud / Uit het Oog, uit het Hart
  type: MusicAlbum
  date published: 1972-10-20
album: Anja en Johnny
  type: MusicAlbum
  date published: 1972-11-12
album: Anja
  type: MusicAlbum
  date published: 1974-11-06
album: De Singles
  type: MusicAlbum
  date published: 2018-09-20