Zihiko
type: MusicGroup
genre: vocaloid
popularity: 6
followers: 143
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x506b52f4d6f2ec0d5e84320eb1cc947f208c44b1faef9eb5c1d72f717f83a115
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/18252255-5c74-41f4-8848-8813953aaa34.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/18252255-5c74-41f4-8848-8813953aaa34.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/18252255-5c74-41f4-8848-8813953aaa34
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
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 0x506b52f4d6f2ec0d5e84320eb1cc947f208c44b1faef9eb5c1d72f717f83a115. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18252255-5c74-41f4-8848-8813953aaa34.json and https://artists.proofprofile.net/proofs/artist/18252255-5c74-41f4-8848-8813953aaa34.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
album: Dare Mo Kinishinai
  type: MusicAlbum
  date published: 2022-07-13
album: Brain Tape
  type: MusicAlbum
  date published: 2022-09-02
album: Reflection
  type: MusicAlbum
  date published: 2022-12-15
album: In My Head
  type: MusicAlbum
  date published: 2023-03-13
album: Our Secret
  type: MusicAlbum
  date published: 2023-05-16
album: Red Letters on Top
  type: MusicAlbum
  date published: 2023-07-23
album: Quantum Leap
  type: MusicAlbum
  date published: 2023-07-30
album: Between the Lines
  type: MusicAlbum
  date published: 2023-11-26
album: Disconnected
  type: MusicAlbum
  date published: 2024-03-12
album: Monsters
  type: MusicAlbum
  date published: 2024-06-04
album: Mosaic
  type: MusicAlbum
  date published: 2024-09-27
album: A Thousand Figures
  type: MusicAlbum
  date published: 2024-11-29
album: They Tell Me
  type: MusicAlbum
  date published: 2025-01-26
  track: They Tell Me
    type: MusicRecording
    duration: PT2M58S
    duration ms: 178222
    explicit: false
    by artist: Zihiko
    in album: They Tell Me
      type: MusicAlbum
      date published: 2025-01-26
    genre: vocaloid
    isrc code: US7VG2530106
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T09:07:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x67af52f6c2461fc635606045f6cf8c2b88ceb75636301b919d504def57163b5a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956482
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956482
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2530106
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T10:33:57Z
    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 0x67af52f6c2461fc635606045f6cf8c2b88ceb75636301b919d504def57163b5a. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/US7VG2530106.
      date published: 2026-07-03T10:33:57Z
    audio: They Tell Me
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 135.057
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.839
      additional property: Energy
        type: PropertyValue
        value: 0.532
      additional property: Speechiness
        type: PropertyValue
        value: 0.081
      additional property: Acousticness
        type: PropertyValue
        value: 0.085
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.247
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.863
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.124
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Perfectly Well
  type: MusicAlbum
  date published: 2025-02-21
album: Red Letters on Top (Remix)
  type: MusicAlbum
  date published: 2025-04-10
album: Ugly Cake
  type: MusicAlbum
  date published: 2025-08-02
album: Living Near the Void
  type: MusicAlbum
  date published: 2025-08-30
  track: Living Near the Void
    type: MusicRecording
    duration: PT2M30S
    duration ms: 150400
    explicit: false
    by artist: Zihiko
    in album: Living Near the Void
      type: MusicAlbum
      date published: 2025-08-30
    genre: vocaloid
    isrc code: QZNJY2584589
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T13:27:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x21b0fef2bb879ef592d687e9516ecc41ab1d194ea0f2e8d8acef8bc0665267cb
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956560
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956560
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2584589
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Living Near the Void

OTSTimestamp
type: PropertyValue
value: 2026-07-03T23:28:02Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b0fef2bb879ef592d687e9516ecc41ab1d194ea0f2e8d8acef8bc0665267cb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNJY2584589.
date published: 2026-07-03T23:28:02Z

Living Near the Void
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 150.082
additional property: Musical Key
  type: PropertyValue
  value: 11
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.709
additional property: Energy
  type: PropertyValue
  value: 0.832
additional property: Speechiness
  type: PropertyValue
  value: 0.179
additional property: Acousticness
  type: PropertyValue
  value: 0.148
additional property: Instrumentalness
  type: PropertyValue
  value: 0.016
additional property: Liveness
  type: PropertyValue
  value: 0.163
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.769
additional property: Loudness (dB)
  type: PropertyValue
  value: -6.071
additional property: Key Name
  type: PropertyValue
  value: B
additional property: Mode Name
  type: PropertyValue
  value: Major