Dan Styffe
type: MusicGroup
genre: downtempo
genre: trip hop
popularity: 6
followers: 302
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x85b01b73b005f353dc49ffc7035f45d1672d6e559b4a46eb6d03e1c6fff09364
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
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additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a4e5c0f-4f53-40c0-b888-b8b5700b2e88.json
additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
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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 0x85b01b73b005f353dc49ffc7035f45d1672d6e559b4a46eb6d03e1c6fff09364. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a4e5c0f-4f53-40c0-b888-b8b5700b2e88.json and https://artists.proofprofile.net/proofs/artist/8a4e5c0f-4f53-40c0-b888-b8b5700b2e88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x85b01b73b005f353dc49ffc7035f45d1672d6e559b4a46eb6d03e1c6fff09364","name":"Dan Styffe","registered_at":"2026-06-17T13:41:06Z","symbol":"NIM1412834","token_address":"0xe1d95b544eb40ab71bc73acbcd2bd0ce90ae061e","type":"artist","uuid":"8a4e5c0f-4f53-40c0-b888-b8b5700b2e88"}
album: Perspectives (69°42', North | 19°00' East)
  type: MusicAlbum
  date published: 2012-06-01
track: Memory of a Tango
  type: MusicRecording
  duration: PT2M27S
  duration ms: 147184
  explicit: false
  by artist: Lera Auerbach
  by artist: Dan Styffe
  by artist: Jukka-Pekka Saraste
  by artist: Oslo Philharmonic Orchestra
  in album: Secret Memories
    type: MusicAlbum
    date published: 2012-08-17
  isrc code: NOFZS1224010
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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    type: PropertyValue
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  additional property: OTSHash
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    type: PropertyValue
    value: https://blockstream.info/api/block-height/959159
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFZS1224010
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T20:27:51Z
  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 0xb601117f121f4df1096bb9be734e11f9fe69c82c6c325090c30102aab1de840f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:27:51Z), 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/NOFZS1224010.
    date published: 2026-07-22T20:27:51Z
  audio: Memory of a Tango
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 99.726
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.068
    additional property: Energy
      type: PropertyValue
      value: 0.011
    additional property: Speechiness
      type: PropertyValue
      value: 0.047
    additional property: Acousticness
      type: PropertyValue
      value: 0.967
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.75
    additional property: Liveness
      type: PropertyValue
      value: 0.113
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.044
    additional property: Loudness (dB)
      type: PropertyValue
      value: -39.24
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major