Neperia
type: MusicGroup
genre: doom metal
genre: gothic metal
genre: melodic death metal
genre: melodic metal
genre: symphonic metal
popularity: 2
followers: 363
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcb84250887454f5ebf4bef812e97fb42ca3bafa85eb494c88f2a20170657ae6f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954025
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954025
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/388dd6d8-8490-4ab9-86ff-4f1ab50708b0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/388dd6d8-8490-4ab9-86ff-4f1ab50708b0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/388dd6d8-8490-4ab9-86ff-4f1ab50708b0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:32:47Z
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 0xcb84250887454f5ebf4bef812e97fb42ca3bafa85eb494c88f2a20170657ae6f. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/388dd6d8-8490-4ab9-86ff-4f1ab50708b0.json and https://artists.proofprofile.net/proofs/artist/388dd6d8-8490-4ab9-86ff-4f1ab50708b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T00:32:47Z
album: Drawing New Worlds
  type: MusicAlbum
  date published: 2018-02-15
album: The Story Is Told
  type: MusicAlbum
  date published: 2020-10-21
album: iΔÆA
  type: MusicAlbum
  date published: 2022-03-03
album: Like A Broken Toy
  type: MusicAlbum
  date published: 2022-03-24
album: Contrast
  type: MusicAlbum
  date published: 2022-04-07
album: Ptesmata
  type: MusicAlbum
  date published: 2022-06-02
album: Ptesmata - The Orchestrals
  type: MusicAlbum
  date published: 2022-11-03
album: Scaling The Summit
  type: MusicAlbum
  date published: 2023-03-30
album: Minokawa
  type: MusicAlbum
  date published: 2023-09-28
album: Vritra's Garden
  type: MusicAlbum
  date published: 2023-10-26
album: Happy New Age
  type: MusicAlbum
  date published: 2025-02-18
album: Zenaida's Voice
  type: MusicAlbum
  date published: 2025-05-29
  track: Zenaida's Voice
    type: MusicRecording
    duration: PT4M53S
    duration ms: 293445
    explicit: false
    by artist: Neperia
    in album: Zenaida's Voice
      type: MusicAlbum
      date published: 2025-05-29
    genre: doom metal
    genre: gothic metal
    genre: melodic death metal
    genre: melodic metal
    genre: symphonic metal
    isrc code: QZNWR2536377
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T07:31:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xaf912a5c7cf96910a12d0fad4b637fad1be3c272a3db6390ca73778affa8548a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958842
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958842
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2536377
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T07:48:27Z
    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 0xaf912a5c7cf96910a12d0fad4b637fad1be3c272a3db6390ca73778affa8548a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZNWR2536377.
      date published: 2026-07-20T07:48:27Z
    audio: Zenaida's Voice
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 172.081
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.407
      additional property: Energy
        type: PropertyValue
        value: 0.94
      additional property: Speechiness
        type: PropertyValue
        value: 0.158
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.016
      additional property: Liveness
        type: PropertyValue
        value: 0.29
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.291
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.441
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor