Sander Helmers
type: MusicGroup
genre: norwegian pop
popularity: 6
followers: 236
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf2bb4c3bc3eaf6902d80bd222d77337e0acc21fd5cf5b7c5358c44bec828b76b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953954
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953954
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/24883c19-c48a-473d-8c3a-7140da0b60dd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/24883c19-c48a-473d-8c3a-7140da0b60dd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/24883c19-c48a-473d-8c3a-7140da0b60dd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:18:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf2bb4c3bc3eaf6902d80bd222d77337e0acc21fd5cf5b7c5358c44bec828b76b","name":"Sander Helmers","registered_at":"2026-06-16T02:34:29Z","symbol":"NIM0910267","token_address":"0x83666e0478275fff6a9d3785ba187c9ce09757f8","type":"artist","uuid":"24883c19-c48a-473d-8c3a-7140da0b60dd"}
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 0xf2bb4c3bc3eaf6902d80bd222d77337e0acc21fd5cf5b7c5358c44bec828b76b. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24883c19-c48a-473d-8c3a-7140da0b60dd.json and https://artists.proofprofile.net/proofs/artist/24883c19-c48a-473d-8c3a-7140da0b60dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0xf2bb4c3bc3eaf6902d80bd222d77337e0acc21fd5cf5b7c5358c44bec828b76b","name":"Sander Helmers","registered_at":"2026-06-16T02:34:29Z","symbol":"NIM0910267","token_address":"0x83666e0478275fff6a9d3785ba187c9ce09757f8","type":"artist","uuid":"24883c19-c48a-473d-8c3a-7140da0b60dd"}
album: Don't You Love Again (Mamia)
  type: MusicAlbum
  date published: 2023-10-06
  track: Don't You Love Again (Mamia)
    type: MusicRecording
    duration: PT3M18S
    duration ms: 198948
    explicit: false
    by artist: Sander Helmers
    in album: Don't You Love Again (Mamia)
      type: MusicAlbum
      date published: 2023-10-06
    genre: norwegian pop
    isrc code: NO9MC2350010
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T21:21:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc134d618dfbbbc2c2f532f01a3dc23d175eea4a82276d665e8d3bde013817a8a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958329
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958329
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NO9MC2350010
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T00:26:06Z
    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 0xc134d618dfbbbc2c2f532f01a3dc23d175eea4a82276d665e8d3bde013817a8a. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:26:06Z), 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/NO9MC2350010.
      date published: 2026-07-17T00:26:06Z
    audio: Don't You Love Again (Mamia)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 127.968
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.628
      additional property: Energy
        type: PropertyValue
        value: 0.487
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.26
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.232
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.176
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.816
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: All You Ever Need Is A Friend
  type: MusicAlbum
  date published: 2023-12-29
album: So Long Love Song
  type: MusicAlbum
  date published: 2024-02-09
album: The Worst Is Yet To Come
  type: MusicAlbum
  date published: 2024-04-19