Toumeinokuni
type: MusicGroup
genre: vocaloid
popularity: 16
followers: 545
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x437d2f13e233228780306afcf2f4d177f768adf61308439d5060c6490ce30281
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953750
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953750
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab291c95-a5b8-4e15-a863-35e7769c20dd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab291c95-a5b8-4e15-a863-35e7769c20dd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ab291c95-a5b8-4e15-a863-35e7769c20dd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T06:12:23Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437d2f13e233228780306afcf2f4d177f768adf61308439d5060c6490ce30281. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab291c95-a5b8-4e15-a863-35e7769c20dd.json and https://artists.proofprofile.net/proofs/artist/ab291c95-a5b8-4e15-a863-35e7769c20dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T06:12:23Z
album: Suisen to Sanseiu
  type: MusicAlbum
  date published: 2022-07-20
  track: Suisen to Sanseiu
    type: MusicRecording
    duration: PT1M12S
    duration ms: 72869
    explicit: false
    by artist: Toumeinokuni
    in album: Suisen to Sanseiu
      type: MusicAlbum
      date published: 2022-07-20
    genre: vocaloid
    isrc code: JPPC02211556
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf00bfc2ad12910512af09833b4019086f0dbfa5c0656cfdd9e78d884fda85f6c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958774
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958774
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02211556
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T22:23:47Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00bfc2ad12910512af09833b4019086f0dbfa5c0656cfdd9e78d884fda85f6c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:23:47Z), 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/JPPC02211556.
      date published: 2026-07-19T22:23:47Z
    audio: Suisen to Sanseiu
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 144.835
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.727
      additional property: Energy
        type: PropertyValue
        value: 0.384
      additional property: Speechiness
        type: PropertyValue
        value: 0.067
      additional property: Acousticness
        type: PropertyValue
        value: 0.867
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.35
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.593
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.692
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Natsu Yurei
  type: MusicAlbum
  date published: 2022-08-24
album: Tomei Girl
  type: MusicAlbum
  date published: 2022-12-21
album: Kimi no Yoru o Kure (Cover)
  type: MusicAlbum
  date published: 2023-03-29
album: Toumeinokuni Cover Collection Vol.1
  type: MusicAlbum
  date published: 2023-04-26
  track: Shojo Rei
    type: MusicRecording
    duration: PT4M51S
    duration ms: 291198
    explicit: false
    by artist: Toumeinokuni
    in album: Toumeinokuni Cover Collection Vol.1
      type: MusicAlbum
      date published: 2023-04-26
    genre: vocaloid
    isrc code: JPPC02112026
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T04:28:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xebefbedee7021b47482dbb2ed5c012d33ec4b03afbef361381fc5533e83a2f6f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956476
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956476
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02112026
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T09:04:44Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebefbedee7021b47482dbb2ed5c012d33ec4b03afbef361381fc5533e83a2f6f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPPC02112026.
      date published: 2026-07-03T09:04:44Z
    audio: Shojo Rei
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 150.022
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.554
      additional property: Energy
        type: PropertyValue
        value: 0.849
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.006
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Goodby Everyone and Paramore
album: Stardust One Room
album: Kuso Ressha (Cover)
album: Flower Raft
track: Mr.Schadenfreude
track: Hydrangea

Hydrangea
type: MusicRecording
duration: PT3M23S
duration ms: 203137
explicit: false
by artist: Toumeinokuni
in album: PALETTE5
  type: MusicAlbum
  date published: 2022-02-09
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43b959bc296e00ee37d72aa337c90b33942e0c641f82072bce4dbf0112b7f48. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/JPPC02111723.
  date published: 2026-07-22T13:20:46Z
audio: Hydrangea
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 141.122
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.656
  additional property: Energy
    type: PropertyValue
    value: 0.845
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.021
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.315
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.664
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.91
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: JPPC02111723
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 959132
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-22T13:20:46+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02111723
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959132
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959132
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T13:20:46+00:00
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

Instrumentalness
type: PropertyValue
value: 0.056

Liveness
type: PropertyValue
value: 0.341

Valence (Positivity)
type: PropertyValue
value: 0.628

Loudness (dB)
type: PropertyValue
value: -5.394

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Major

Goodby Everyone and Paramore
type: MusicAlbum
date published: 2023-06-28

Stardust One Room
type: MusicAlbum
date published: 2023-12-20

Kuso Ressha (Cover)
type: MusicAlbum
date published: 2024-02-14

Flower Raft
type: MusicAlbum
date published: 2024-03-27

Mr.Schadenfreude
type: MusicRecording
duration: PT4M7S
duration ms: 247441
explicit: false
by artist: Aohi Rame
by artist: IZUMI
by artist: KOMAINU.
by artist: Cereus
by artist: Tsukino
by artist: Toumeinokuni
by artist: Myomyo
by artist: 吉乃
in album: PALETTE5
  type: MusicAlbum
  date published: 2022-02-09
isrc code: JPPC02210026
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T11:37:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf5615b9752ebd8d5e7b73157d2061daa3d86b7536487b0c3573ae9117b8e993c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02210026
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5615b9752ebd8d5e7b73157d2061daa3d86b7536487b0c3573ae9117b8e993c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPPC02210026.
  date published: 2026-07-07T18:39:05Z
audio: Mr.Schadenfreude
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.485
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.645
  additional property: Energy
    type: PropertyValue
    value: 0.844
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.055
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.323
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.534
  additional property: Loudness (dB)
    type: PropertyValue
    value: -7.903
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Mr.Schadenfreude
type: MusicRecording
duration: PT4M7S
duration ms: 247441
explicit: false
by artist: Aohi Rame
by artist: IZUMI
by artist: KOMAINU.
by artist: Cereus
by artist: Tsukino
by artist: Toumeinokuni
by artist: Myomyo
by artist: 吉乃
in album: Mr.Schadenfreude
  type: MusicAlbum
  date published: 2022-02-02
isrc code: JPPC02210026
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T11:37:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf5615b9752ebd8d5e7b73157d2061daa3d86b7536487b0c3573ae9117b8e993c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953536
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02210026
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5615b9752ebd8d5e7b73157d2061daa3d86b7536487b0c3573ae9117b8e993c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPPC02210026.
  date published: 2026-06-13T17:25:41Z
audio: Mr.Schadenfreude
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.49
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.645
  additional property: Energy
    type: PropertyValue
    value: 0.844
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.057
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.326
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.509
  additional property: Loudness (dB)
    type: PropertyValue
    value: -7.905
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major