Marcus Nyman
type: MusicGroup
description: Marcus Victor Jan Nyman (born 14 August 1990) is a Swedish retired judoka. He competed in the men's −90 kg judo event. In his olympic debut at the 2012 Summer Olympics he was eliminated after losing h
popularity: 4
followers: 3015
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0131ce368bd1e5be954d2cc373a23f8d40a1b5f65b933bae0ac120f09d378905
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f5ef8d4d-b6a2-445c-8c8b-cb4c2ea5f070.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f5ef8d4d-b6a2-445c-8c8b-cb4c2ea5f070.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f5ef8d4d-b6a2-445c-8c8b-cb4c2ea5f070
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0131ce368bd1e5be954d2cc373a23f8d40a1b5f65b933bae0ac120f09d378905","name":"Marcus Nyman","registered_at":"2026-06-21T15:13:03Z","symbol":"NIM1956504","token_address":"0xe5e11643137dc59471042e418c23cd4a599304ae","type":"artist","uuid":"f5ef8d4d-b6a2-445c-8c8b-cb4c2ea5f070"}
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 0x0131ce368bd1e5be954d2cc373a23f8d40a1b5f65b933bae0ac120f09d378905. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5ef8d4d-b6a2-445c-8c8b-cb4c2ea5f070.json and https://artists.proofprofile.net/proofs/artist/f5ef8d4d-b6a2-445c-8c8b-cb4c2ea5f070.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x0131ce368bd1e5be954d2cc373a23f8d40a1b5f65b933bae0ac120f09d378905","name":"Marcus Nyman","registered_at":"2026-06-21T15:13:03Z","symbol":"NIM1956504","token_address":"0xe5e11643137dc59471042e418c23cd4a599304ae","type":"artist","uuid":"f5ef8d4d-b6a2-445c-8c8b-cb4c2ea5f070"}
album: Cute (1.00)
  type: MusicAlbum
  date published: 2011-04-12
album: 90gQ
  type: MusicAlbum
  date published: 2012-09-28
  track: En säng som sprängs (feat. Daniel)
    type: MusicRecording
    duration: PT2M45S
    duration ms: 165632
    explicit: false
    by artist: Marcus Nyman
    in album: 90gQ
      type: MusicAlbum
      date published: 2012-09-28
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    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEYOK1219967
    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 0x9c77ec8acdbdff82f77bf0a26548bfe8e362378812eb86658492f472a7cb7f57. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEYOK1219967.
      date published: 2026-07-05T18:48:28Z
    audio: En säng som sprängs (feat. Daniel)
      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
        type: PropertyValue
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      additional property: Speechiness
        type: PropertyValue
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      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.346
      additional property: Loudness (dB)
        type: PropertyValue
        value: 0.641
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major