Fantastikku.
type: MusicGroup
genre: anime
popularity: 24
followers: 1044
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3a8a4d76c0f064c44b705b53c31e23552a3ab6aa84515c2fec07f06496c0e53b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/59d29023-5b6b-4795-aa42-b40c3e0b21b3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/59d29023-5b6b-4795-aa42-b40c3e0b21b3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/59d29023-5b6b-4795-aa42-b40c3e0b21b3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
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 0x3a8a4d76c0f064c44b705b53c31e23552a3ab6aa84515c2fec07f06496c0e53b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59d29023-5b6b-4795-aa42-b40c3e0b21b3.json and https://artists.proofprofile.net/proofs/artist/59d29023-5b6b-4795-aa42-b40c3e0b21b3.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
album: Kingdom Of Predators (from Hunter × Hunter)
  type: MusicAlbum
  date published: 2021-04-12
album: Kingdom Of Predators (from Hunter × Hunter)
  type: MusicAlbum
  date published: 2021-04-12
album: Kingdom Of Predators (from Hunter × Hunter)
  type: MusicAlbum
  date published: 2021-05-04
album: Kingdom Of Predators (from Hunter × Hunter)
  type: MusicAlbum
  date published: 2021-05-04
album: “Hunter × Hunter” Ost Collection 1
  type: MusicAlbum
  date published: 2021-10-28
  track: Dirge from Dark Side
    type: MusicRecording
    duration: PT1M20S
    duration ms: 80196
    explicit: false
    by artist: Fantastikku.
    in album: “Hunter × Hunter” Ost Collection 1
      type: MusicAlbum
      date published: 2021-10-28
    genre: anime
    isrc code: GX53U2009478
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T21:09:32+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x903e8fe6ade16842ddc30d224d90525dc9500e7483cb413ffdbb483414c0682b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957754
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957754
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX53U2009478
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T21:26:22Z
    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 0x903e8fe6ade16842ddc30d224d90525dc9500e7483cb413ffdbb483414c0682b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX53U2009478 — a six-check JSON result.
      date published: 2026-07-12T21:26:22Z
    audio: Dirge from Dark Side
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.876
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.158
      additional property: Energy
        type: PropertyValue
        value: 0.034
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.981
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.943
      additional property: Liveness
        type: PropertyValue
        value: 0.111
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.285
      additional property: Loudness (dB)
        type: PropertyValue
        value: -25.491
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: "Hunter × Hunter" Ost Collection 1
  type: MusicAlbum
  date published: 2021-10-28
album: In the Palace ~ Lamentoso
  type: MusicAlbum
  date published: 2021-11-12
album: In the Palace ~ Lamentoso
  type: MusicAlbum
  date published: 2021-11-12
album: Biscuit Krueger Theme (From Hunter × Hunter)
  type: MusicAlbum
  date published: 2022-02-05
  track: Bisky Theme (Hunter × Hunter)
    type: MusicRecording
    duration: PT0M51S
    duration ms: 51666
    explicit: false
    by artist: Fantastikku.
    in album: Biscuit Krueger Theme (From Hunter × Hunter)
      type: MusicAlbum
      date published: 2022-02-05
    genre: anime
    isrc code: GX53U2076830
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T00:13:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9c3afd0bfeaf201c430400f3fd16b2f64a8d00434ba43165827e90d359034481
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX53U2076830
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x9c3afd0bfeaf201c430400f3fd16b2f64a8d00434ba43165827e90d359034481. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX53U2076830 — a six-check JSON result.
      date published: 2026-07-04T10:04:33Z
    audio: Bisky Theme (Hunter × Hunter)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94.225
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: melody of a lonely world.
album: you can fly again
album: (Hunter × Hunter) Those Called Friends. "Nakama to Iu Koto"
album: morning of hope 「希望の朝」
album: our painted family (from Clair Obscur: Expedition 33)

Danceability
type: PropertyValue
value: 0.585

Energy
type: PropertyValue
value: 0.544

Speechiness
type: PropertyValue
value: 0.056

Acousticness
type: PropertyValue
value: 0.084

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.35

Valence (Positivity)
type: PropertyValue
value: 0.876

Loudness (dB)
type: PropertyValue
value: -11.738

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major

Biscuit Krueger Theme (From Hunter × Hunter)
type: MusicAlbum
date published: 2022-02-05

melody of a lonely world.
type: MusicAlbum
date published: 2022-03-27

you can fly again
type: MusicAlbum
date published: 2023-02-20

(Hunter × Hunter) Those Called Friends. "Nakama to Iu Koto"
type: MusicAlbum
date published: 2023-03-03

morning of hope 「希望の朝」
type: MusicAlbum
date published: 2023-09-12

our painted family (from Clair Obscur: Expedition 33)
type: MusicAlbum
date published: 2025-08-03