Isekai
type: MusicGroup
genre: metalcore
genre: post-hardcore
description: is a subgenre of Japanese high fantasy fiction that revolves around a person or people who are transported to and have to survive in another world. In the new world, the person usually gains formidab
popularity: 3
followers: 159
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf5645cfceebe0dc34c8793b962620e022af20ccc83d49308ac6546fa0f9068. 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/a64817e5-2d02-4982-a421-4bb0f2768ffb.json and https://artists.proofprofile.net/proofs/artist/a64817e5-2d02-4982-a421-4bb0f2768ffb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
album: Castles
  type: MusicAlbum
  date published: 2025-01-10
  track: Castles
    type: MusicRecording
    duration: PT2M46S
    duration ms: 166259
    explicit: true
    by artist: Isekai
    in album: Castles
      type: MusicAlbum
      date published: 2025-01-10
    genre: metalcore
    genre: post-hardcore
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-19T16:28:28Z
    audio: Castles
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
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      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      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
        type: PropertyValue
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      additional property: Liveness
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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      additional property: Key Name
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        value: C
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album: Self Revelations
  type: MusicAlbum
  date published: 2025-02-21
album: Perceptions
  type: MusicAlbum
  date published: 2025-09-19