Roelofs
type: MusicGroup
description: Roelofs is a Dutch language patronymic surname. The common Dutch given name Roelof is equivalent to Rudolph. People with this surname include: Al Roelofs (1906–1990), Dutch-born American art director
popularity: 9
followers: 101
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x980733d5fbda9fdcfbc03489ece5715350448b72dbb02248c05166789f33245a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9d616b50-bd7c-4788-94bb-70e400f8bf6b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9d616b50-bd7c-4788-94bb-70e400f8bf6b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9d616b50-bd7c-4788-94bb-70e400f8bf6b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
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 0x980733d5fbda9fdcfbc03489ece5715350448b72dbb02248c05166789f33245a. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d616b50-bd7c-4788-94bb-70e400f8bf6b.json and https://artists.proofprofile.net/proofs/artist/9d616b50-bd7c-4788-94bb-70e400f8bf6b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-20T06:31:18Z
album: Logos
  type: MusicAlbum
  date published: 2023-01-06
album: Alpha & Omega
  type: MusicAlbum
  date published: 2023-06-09
album: Labour of Love
  type: MusicAlbum
  date published: 2023-07-21
album: Amblyopia
  type: MusicAlbum
  date published: 2023-08-18
album: Fernweh
  type: MusicAlbum
  date published: 2023-09-08
album: Root of the Matter
  type: MusicAlbum
  date published: 2023-11-17
album: Beautiful Detour, The Long Way Home
  type: MusicAlbum
  date published: 2023-12-22
album: Gentle You
  type: MusicAlbum
  date published: 2024-01-05
album: Third Wheel
  type: MusicAlbum
  date published: 2024-01-19
album: Travelling Light
  type: MusicAlbum
  date published: 2024-02-02
album: That Was Then
  type: MusicAlbum
  date published: 2024-02-16
album: Only If You Love
  type: MusicAlbum
  date published: 2024-02-23
album: Folksong
  type: MusicAlbum
  date published: 2024-03-15
album: Beautiful Detour, The Long Way Home
  type: MusicAlbum
  date published: 2024-03-15
album: Three Is A Crowd
  type: MusicAlbum
  date published: 2024-04-19
album: Man of Sorrows
  type: MusicAlbum
  date published: 2024-10-04
album: Faithful Witness
  type: MusicAlbum
  date published: 2024-10-25
album: Bread of Life
  type: MusicAlbum
  date published: 2024-11-15
album: The Gate
  type: MusicAlbum
  date published: 2024-12-06
album: Beginning & End
  type: MusicAlbum
  date published: 2025-01-03
album: Fighting Sleep
  type: MusicAlbum
  date published: 2025-02-14
album: Accept And Let Go
  type: MusicAlbum
  date published: 2025-03-14
  track: Accept And Let Go
    type: MusicRecording
    duration: PT4M55S
    duration ms: 295231
    explicit: false
    by artist: Roelofs
    in album: Accept And Let Go
      type: MusicAlbum
      date published: 2025-03-14
    isrc code: NL7DA2400660
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T10:36:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9621fbfd236f26039dd7dc258972fc8284ed8495592b13f25531a79d5c1f5c79
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL7DA2400660
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0x9621fbfd236f26039dd7dc258972fc8284ed8495592b13f25531a79d5c1f5c79. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL7DA2400660 — a six-check JSON result.
      date published: 2026-07-05T18:48:28Z
    audio: Accept And Let Go
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.453
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.582
      additional property: Energy
        type: PropertyValue
        value: 0.223
      additional property: Speechiness
        type: PropertyValue
        value: 0.067
      additional property: Acousticness
        type: PropertyValue
        value: 0.811
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.572
      additional property: Liveness
        type: PropertyValue
        value: 0.105
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.212
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.157
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Third Wheel
  type: MusicAlbum
  date published: 2025-05-16