Honoka Sakata
type: MusicGroup
popularity: 11
followers: 2916
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe90ec8f6cbe573138d9f55de088dd1c722b2acfd069cc53489776f0bfd176ad3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953812
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953812
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f5fa60f4-e701-4097-a44f-af1917d6c1c9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f5fa60f4-e701-4097-a44f-af1917d6c1c9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f5fa60f4-e701-4097-a44f-af1917d6c1c9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T17:06:52Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe90ec8f6cbe573138d9f55de088dd1c722b2acfd069cc53489776f0bfd176ad3","name":"Honoka Sakata","registered_at":"2026-06-15T06:21:11Z","symbol":"NIM0709017","token_address":"0x9a37a609107ae73cd7fd0d0d85705a9e6c40eafd","type":"artist","uuid":"f5fa60f4-e701-4097-a44f-af1917d6c1c9"}
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 0xe90ec8f6cbe573138d9f55de088dd1c722b2acfd069cc53489776f0bfd176ad3. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5fa60f4-e701-4097-a44f-af1917d6c1c9.json and https://artists.proofprofile.net/proofs/artist/f5fa60f4-e701-4097-a44f-af1917d6c1c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T17:06:52Z
  text: {"copyright_id":"0xe90ec8f6cbe573138d9f55de088dd1c722b2acfd069cc53489776f0bfd176ad3","name":"Honoka Sakata","registered_at":"2026-06-15T06:21:11Z","symbol":"NIM0709017","token_address":"0x9a37a609107ae73cd7fd0d0d85705a9e6c40eafd","type":"artist","uuid":"f5fa60f4-e701-4097-a44f-af1917d6c1c9"}
album: Honeytrap Frappuccino
  type: MusicAlbum
  date published: 2021-07-14
album: Midnight Drive
  type: MusicAlbum
  date published: 2023-07-15
album: Bye Bye, Darling
  type: MusicAlbum
  date published: 2022-12-24
album: last kiss
  type: MusicAlbum
  date published: 2022-10-01
album: DasakuDrama (feat. takumi)
  type: MusicAlbum
  date published: 2022-08-06
album: suteta.
  type: MusicAlbum
  date published: 2022-07-02
album: miren
  type: MusicAlbum
  date published: 2022-05-28
album: I wanted to be your lover.
  type: MusicAlbum
  date published: 2022-04-24
album: nukegara
  type: MusicAlbum
  date published: 2022-03-26
album: res
  type: MusicAlbum
  date published: 2022-02-14
album: ウツりゆく
  type: MusicAlbum
  date published: 2022-02-09
album: AISHUDinner (feat. KenKen)
  type: MusicAlbum
  date published: 2022-01-31
album: kensei
  type: MusicAlbum
  date published: 2021-11-20
album: Omowaseburi
  type: MusicAlbum
  date published: 2021-08-04
  track: Omowaseburi
    type: MusicRecording
    duration: PT2M26S
    duration ms: 146104
    explicit: false
    by artist: Honoka Sakata
    in album: Omowaseburi
      type: MusicAlbum
      date published: 2021-08-04
    isrc code: TCJPP2133050
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T19:47:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x04502b449118672f4c02318bfc65618c444f8a9e24eea670f0df7a45f69d67ad
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957122
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957122
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPP2133050
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:39:04Z
    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 0x04502b449118672f4c02318bfc65618c444f8a9e24eea670f0df7a45f69d67ad. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCJPP2133050.
      date published: 2026-07-08T03:39:04Z
    audio: Omowaseburi
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 143.874
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.728
      additional property: Energy
        type: PropertyValue
        value: 0.477
      additional property: Speechiness
        type: PropertyValue
        value: 0.079
      additional property: Acousticness
        type: PropertyValue
        value: 0.178
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.12
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.661
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.663
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Honey
  type: MusicAlbum
  date published: 2021-07-07
album: Sayonara (feat. enu)
  type: MusicAlbum
  date published: 2021-06-30
album: i am love
  type: MusicAlbum
  date published: 2020-09-25
album: 元カノさんへ
  type: MusicAlbum
  date published: 2019-03-20
album: ウワサバナシ
  type: MusicAlbum
  date published: 2018-12-05
album: Watashi ha aitai, Kimi ha yaritai (feat. Honoka Sakata)
  type: MusicAlbum
  date published: 2021-07-24
  track: Watashi ha aitai, Kimi ha yaritai (feat. Honoka Sakata)
    type: MusicRecording
    duration: PT2M56S
    duration ms: 176417
    explicit: false
    by artist: 純猥談
    by artist: Honoka Sakata
    in album: Watashi ha aitai, Kimi ha yaritai (feat. Honoka Sakata)
      type: MusicAlbum
      date published: 2021-07-24
    isrc code: TCJPP2118788
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T20:56:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4b9ca5d15fce9a37e0679277136f24f834ba75596b8da54634206809774e9422
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Watashi ha aitai, Kimi ha yaritai (feat. Honoka Sakata)
album: dokkadeoshiawaseni (feat. Honoka Sakata)
album: Kanojo no daiyouhin (feat. Honoka Sakata)

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957120

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957120

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPP2118788

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:22:41Z

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 0x4b9ca5d15fce9a37e0679277136f24f834ba75596b8da54634206809774e9422. 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/TCJPP2118788.
date published: 2026-07-08T03:22:41Z

Watashi ha aitai, Kimi ha yaritai (feat. Honoka Sakata)
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 141.172
additional property: Musical Key
  type: PropertyValue
  value: 9
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.791
additional property: Energy
  type: PropertyValue
  value: 0.255
additional property: Speechiness
  type: PropertyValue
  value: 0.061
additional property: Acousticness
  type: PropertyValue
  value: 0.25
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.098
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.758
additional property: Loudness (dB)
  type: PropertyValue
  value: -12.109
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Major

dokkadeoshiawaseni (feat. Honoka Sakata)
type: MusicAlbum
date published: 2021-12-03

Kanojo no daiyouhin (feat. Honoka Sakata)
type: MusicAlbum
date published: 2020-12-02
track: Kanojo no daiyouhin (feat. Honoka Sakata)
  type: MusicRecording
  duration: PT2M45S
  duration ms: 165000
  explicit: false
  by artist: 純猥談
  by artist: Honoka Sakata
  in album: Kanojo no daiyouhin (feat. Honoka Sakata)
    type: MusicAlbum
    date published: 2020-12-02
  isrc code: TCJPN2022255
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T20:34:13+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3ef8c50c7f48c86e3e92f40b6b310557fe6bc3a30c587e30a7e4fc02938f5237
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPN2022255
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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 0x3ef8c50c7f48c86e3e92f40b6b310557fe6bc3a30c587e30a7e4fc02938f5237. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPN2022255.
    date published: 2026-07-08T08:56:20Z
  audio: Kanojo no daiyouhin (feat. Honoka Sakata)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 104.389
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.754
    additional property: Energy
      type: PropertyValue
      value: 0.097
    additional property: Speechiness
      type: PropertyValue
      value: 0.06
    additional property: Acousticness
      type: PropertyValue
      value: 0.88
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.144
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.609
    additional property: Loudness (dB)
      type: PropertyValue
      value: -19.319
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major