Holander
type: MusicGroup
popularity: 5
followers: 1263
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb9480981dec0b3adab4998a757ab698fd2a34a600900d51c67f9a1633d1b2cdd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/51f577ed-b786-475c-86ee-f9de91018d69.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/51f577ed-b786-475c-86ee-f9de91018d69.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/51f577ed-b786-475c-86ee-f9de91018d69
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9480981dec0b3adab4998a757ab698fd2a34a600900d51c67f9a1633d1b2cdd. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51f577ed-b786-475c-86ee-f9de91018d69.json and https://artists.proofprofile.net/proofs/artist/51f577ed-b786-475c-86ee-f9de91018d69.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Satellite
  type: MusicAlbum
  date published: 2017-09-08
album: Something Real
  type: MusicAlbum
  date published: 2018-02-16
album: Smoke
  type: MusicAlbum
  date published: 2018-07-20
album: Kick Drum
  type: MusicAlbum
  date published: 2019-01-25
album: Kick Drum
  type: MusicAlbum
  date published: 2019-01-25
album: Boy Tears
  type: MusicAlbum
  date published: 2019-04-24
album: Boy Tears
  type: MusicAlbum
  date published: 2019-04-24
album: Party of One
  type: MusicAlbum
  date published: 2019-06-12
album: Party of One
  type: MusicAlbum
  date published: 2019-06-12
album: Headphones
  type: MusicAlbum
  date published: 2019-07-26
album: Glitter Grunge
  type: MusicAlbum
  date published: 2019-08-21
album: Car Crash
  type: MusicAlbum
  date published: 2020-02-21
album: The Quarantine Love Song
  type: MusicAlbum
  date published: 2020-03-27
album: E-Girl
  type: MusicAlbum
  date published: 2021-03-26
album: I Got Ur Email
  type: MusicAlbum
  date published: 2021-06-14
album: BLOCKED FOREVER
  type: MusicAlbum
  date published: 2021-11-04
album: Blocked Forever
  type: MusicAlbum
  date published: 2021-11-05
album: Blocked Forever
  type: MusicAlbum
  date published: 2021-11-05
album: EVERYWHERE
  type: MusicAlbum
  date published: 2022-05-13
album: Die4u
  type: MusicAlbum
  date published: 2023-01-18
album: Alive.
  type: MusicAlbum
  date published: 2023-04-28
album: AZ Boy
  type: MusicAlbum
  date published: 2023-11-10
album: WWW
  type: MusicAlbum
  date published: 2025-02-21
  track: WWW
    type: MusicRecording
    duration: PT2M29S
    duration ms: 149092
    explicit: true
    by artist: Holander
    in album: WWW
      type: MusicAlbum
      date published: 2025-02-21
    isrc code: QZDA42597438
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T19:30:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2221480392686788b4156a7c134ca449fa2006e4959455aff1ca20f13844a5c0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958489
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958489
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42597438
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T04:13:26Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2221480392686788b4156a7c134ca449fa2006e4959455aff1ca20f13844a5c0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDA42597438.
      date published: 2026-07-18T04:13:26Z
    audio: WWW
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 134.974
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.737
      additional property: Energy
        type: PropertyValue
        value: 0.887
      additional property: Speechiness
        type: PropertyValue
        value: 0.15
      additional property: Acousticness
        type: PropertyValue
        value: 0.052
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.239
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.819
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.174
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: in the volcano
  type: MusicAlbum
  date published: 2025-04-04
album: strange liquids
  type: MusicAlbum
  date published: 2025-05-09