Rolf Sand
type: MusicGroup
description: thumb Rolf Sand (21 February 1920 – 20 May 2018) was a Norwegian actor. He was born in Kristiania, a half-brother of Bjørn Sand. He made his stage debut in 1949, in the title role in Holberg's comedy
popularity: 12
followers: 102
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6b749124642ac1ab652edd5ba8593e98c99543020bcc63b8b326faf3814cec. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7400b06e-c4f3-4a24-83af-4b0dec716b43.json and https://artists.proofprofile.net/proofs/artist/7400b06e-c4f3-4a24-83af-4b0dec716b43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T22:00:24Z
  text: {"copyright_id":"0x0d6b749124642ac1ab652edd5ba8593e98c99543020bcc63b8b326faf3814cec","name":"Rolf Sand","registered_at":"2026-06-14T16:39:38Z","symbol":"NIM0512960","token_address":"0x489e082452641cef00266e77d48a932ea3df2b00","type":"artist","uuid":"7400b06e-c4f3-4a24-83af-4b0dec716b43"}
track: Hei-hå - Fra "Snehvit og de Syv Dvergene"
  type: MusicRecording
  duration: PT1M53S
  duration ms: 113543
  explicit: false
  by artist: Rolf Sand
  by artist: Bjørn Jenseg
  by artist: Knut Risan
  by artist: Roy Bjørnstad
  by artist: Anders Hatlo
  by artist: Sverre Holm
  in album: Disney 100
    type: MusicAlbum
    date published: 2023-11-03
  isrc code: USWD10526382
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD10526382
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0x273a5361559565578c00580034ac7c2faf7ee6e2d6a212ba2dfc48edfde58b8f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USWD10526382.
    date published: 2026-07-08T03:20:19Z
  audio: Hei-hå - Fra "Snehvit og de Syv Dvergene"
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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      value: 0.83
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.825
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major