Niklas Sundin
type: MusicGroup
genre: dark ambient
description: Niklas Sundin (born 13 August 1974) is a Swedish musician, best known as a founding member and former lead guitarist of the melodic death metal band Dark Tranquillity from 1989–2020. In 2019, he found
popularity: 5
followers: 247
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  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
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  date published: 2026-06-17T07:49:29Z
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album: Wattudragaren
  type: MusicAlbum
  date published: 2024-04-19
album: Ärla
  type: MusicAlbum
  date published: 2024-12-09
album: Tjäle
  type: MusicAlbum
  date published: 2025-01-16
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    by artist: Niklas Sundin
    in album: Tjäle
      type: MusicAlbum
      date published: 2025-01-16
    genre: dark ambient
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    additional property: OTSVerifyInstructions
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      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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0881bb3b360fc184fa7f38155f8fa1c9115cab9c5951a2a4ab353126a70edb. 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/USCGH2524292.
      date published: 2026-07-06T01:25:57Z
    audio: Tjäle
      type: AudioObject
      additional property: Tempo (BPM)
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      additional property: Mode (Major/Minor)
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      additional property: Instrumentalness
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      additional property: Liveness
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      additional property: Loudness (dB)
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      additional property: Key Name
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