Heptaedium
type: MusicGroup
genre: djent
popularity: 11
followers: 2533
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9e99416e8d502c1d306085f2d252eb0a5d1cbf0dfcd28f1e1afee85f23bfcf61
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953687
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953687
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/68674e60-cf60-459c-b089-3f18c1507810.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/68674e60-cf60-459c-b089-3f18c1507810.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/68674e60-cf60-459c-b089-3f18c1507810
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T20:19:15Z
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 0x9e99416e8d502c1d306085f2d252eb0a5d1cbf0dfcd28f1e1afee85f23bfcf61. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68674e60-cf60-459c-b089-3f18c1507810.json and https://artists.proofprofile.net/proofs/artist/68674e60-cf60-459c-b089-3f18c1507810.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T20:19:15Z
album: Monochronic Visual Interface
  type: MusicAlbum
  date published: 2012-12-20
album: Kawaii!!
  type: MusicAlbum
  date published: 2015-09-26
  track: I AM the Nintendocore
    type: MusicRecording
    duration: PT4M28S
    duration ms: 268486
    explicit: true
    by artist: Heptaedium
    in album: Kawaii!!
      type: MusicAlbum
      date published: 2015-09-26
    genre: djent
    isrc code: UST8K1719603
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T17:30:32+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf2bb0837650723f3ef519a002e542eb61a43569c055e562d71b5a52841340e32
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959043
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959043
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UST8K1719603
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T18:40:26Z
    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 0xf2bb0837650723f3ef519a002e542eb61a43569c055e562d71b5a52841340e32. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/UST8K1719603.
      date published: 2026-07-21T18:40:26Z
    audio: I AM the Nintendocore
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 123.995
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.232
      additional property: Energy
        type: PropertyValue
        value: 0.969
      additional property: Speechiness
        type: PropertyValue
        value: 0.075
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.885
      additional property: Liveness
        type: PropertyValue
        value: 0.275
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.037
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.195
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Underground Business
  type: MusicAlbum
  date published: 2016-02-06
album: How Long Shall I Suffer Here ?
  type: MusicAlbum
  date published: 2017-10-06
album: The Great Herald of Misery
  type: MusicAlbum
  date published: 2018-05-25
album: Digital Heresy
  type: MusicAlbum
  date published: 2018-07-20
track: Subpixel Carryover
  type: MusicRecording
  duration: PT3M33S
  duration ms: 213394
  explicit: false
  by artist: Heptaedium
  in album: Glitched
    type: MusicAlbum
    date published: 2017-01-24
  isrc code: SEYOK1705807
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T20:39:42+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x90d198a08bf3e59318bf687dc06dc4a34bfa82ab3ee41d50849658ff81f7da48
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEYOK1705807
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  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 0x90d198a08bf3e59318bf687dc06dc4a34bfa82ab3ee41d50849658ff81f7da48. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEYOK1705807.
    date published: 2026-07-08T03:22:41Z
  audio: Subpixel Carryover
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 114.6
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.418
    additional property: Energy
      type: PropertyValue
      value: 0.94
    additional property: Speechiness
      type: PropertyValue
      value: 0.055
    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

Acousticness
type: PropertyValue
value: 0.001

Instrumentalness
type: PropertyValue
value: 0.861

Liveness
type: PropertyValue
value: 0.395

Valence (Positivity)
type: PropertyValue
value: 0.335

Loudness (dB)
type: PropertyValue
value: -12.029

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor