Ulf Samuelsson
type: MusicGroup
description: Ulf Bo Samuelsson (born March 26, 1964) is a Swedish-American former professional ice hockey defenceman who formerly served as assistant coach of the Florida Panthers of the National Hockey League. He
popularity: 5
followers: 92
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x538eac32ad8509f5dbb89932d0a70a9e972f8d774cbb53167f121fba92f4ba4f
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
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additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/a553bc79-54ab-4678-b7a0-7e22489b9907.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a553bc79-54ab-4678-b7a0-7e22489b9907
additional property: OTSTimestamp
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  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x538eac32ad8509f5dbb89932d0a70a9e972f8d774cbb53167f121fba92f4ba4f","name":"Ulf Samuelsson","registered_at":"2026-06-20T07:22:30Z","symbol":"NIM1551894","token_address":"0x2cc7f5bb6e3227b8ba18e4671ccfafc6ec1cc911","type":"artist","uuid":"a553bc79-54ab-4678-b7a0-7e22489b9907"}
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 0x538eac32ad8509f5dbb89932d0a70a9e972f8d774cbb53167f121fba92f4ba4f. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a553bc79-54ab-4678-b7a0-7e22489b9907.json and https://artists.proofprofile.net/proofs/artist/a553bc79-54ab-4678-b7a0-7e22489b9907.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x538eac32ad8509f5dbb89932d0a70a9e972f8d774cbb53167f121fba92f4ba4f","name":"Ulf Samuelsson","registered_at":"2026-06-20T07:22:30Z","symbol":"NIM1551894","token_address":"0x2cc7f5bb6e3227b8ba18e4671ccfafc6ec1cc911","type":"artist","uuid":"a553bc79-54ab-4678-b7a0-7e22489b9907"}
album: Orgelromantik
  type: MusicAlbum
  date published: 1993-01-01
album: Orgelromantik
  type: MusicAlbum
  date published: 1993-01-01
album: Musik till tröst
  type: MusicAlbum
  date published: 2002-01-01
album: Musik till tröst
  type: MusicAlbum
  date published: 2002-01-01
album: Under Hoga Valv
  type: MusicAlbum
  date published: 2010-09-14
album: Under Hoga Valv
  type: MusicAlbum
  date published: 2010-09-14
  track: Sommarpsalm, "En vanlig gronskas rika drakt"
    type: MusicRecording
    duration: PT2M59S
    duration ms: 179533
    explicit: false
    by artist: Ulf Samuelsson
    in album: Under Hoga Valv
      type: MusicAlbum
      date published: 2010-09-14
    isrc code: USB8U1027395
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1027395
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0xb17be3e3db94f64975afe3a2b385b85aee95cc6fc88155f4d729f200c87b94b1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USB8U1027395.
      date published: 2026-07-06T01:25:57Z
    audio: Sommarpsalm, "En vanlig gronskas rika drakt"
      type: AudioObject
      additional property: Tempo (BPM)
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      additional property: Musical Key
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      additional property: Mode (Major/Minor)
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        value: 1
      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
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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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      additional property: Loudness (dB)
        type: PropertyValue
        value: -20.288
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major