Sjúrður Strøm
type: MusicGroup
popularity: 4
followers: 23
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3c7dd26fe924498b66f8388d58500f7372ddfd12a35651b022f78f02032c7dab
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fc8923d8-e15e-4967-9464-efcfc50a1fe3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fc8923d8-e15e-4967-9464-efcfc50a1fe3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fc8923d8-e15e-4967-9464-efcfc50a1fe3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3c7dd26fe924498b66f8388d58500f7372ddfd12a35651b022f78f02032c7dab","name":"Sjúrður Strøm","registered_at":"2026-06-21T17:31:50Z","symbol":"NIM1986927","token_address":"0x43b8ff377487764377f69d8b15749c85808e1819","type":"artist","uuid":"fc8923d8-e15e-4967-9464-efcfc50a1fe3"}
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 0x3c7dd26fe924498b66f8388d58500f7372ddfd12a35651b022f78f02032c7dab. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc8923d8-e15e-4967-9464-efcfc50a1fe3.json and https://artists.proofprofile.net/proofs/artist/fc8923d8-e15e-4967-9464-efcfc50a1fe3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0x3c7dd26fe924498b66f8388d58500f7372ddfd12a35651b022f78f02032c7dab","name":"Sjúrður Strøm","registered_at":"2026-06-21T17:31:50Z","symbol":"NIM1986927","token_address":"0x43b8ff377487764377f69d8b15749c85808e1819","type":"artist","uuid":"fc8923d8-e15e-4967-9464-efcfc50a1fe3"}
album: Harmoniku Tónleikur
  type: MusicAlbum
  date published: 2015-08-07
  track: Hambo På Logen
    type: MusicRecording
    duration: PT2M0S
    duration ms: 120360
    explicit: false
    by artist: Sjúrður Strøm
    in album: Harmoniku Tónleikur
      type: MusicAlbum
      date published: 2015-08-07
    isrc code: FRX871533849
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T11:51:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2c9ef6941c602a9bf9da7fccbaa5888d0e2cfa4b31a4311648bd274f80d12d69
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX871533849
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0x2c9ef6941c602a9bf9da7fccbaa5888d0e2cfa4b31a4311648bd274f80d12d69. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX871533849.
      date published: 2026-07-05T01:12:41Z
    audio: Hambo På Logen
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 127.598
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.503
      additional property: Energy
        type: PropertyValue
        value: 0.29
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.835
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.662
      additional property: Liveness
        type: PropertyValue
        value: 0.093
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.836
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.981
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major