砂粒
type: MusicGroup
genre: vocaloid
popularity: 8
followers: 655
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa6c492e8cb33224a51f57682887951f40f011497e0c8344779603f3b602bce47
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953949
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953949
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/23512e4e-6685-41bd-b62d-140800e3237c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/23512e4e-6685-41bd-b62d-140800e3237c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/23512e4e-6685-41bd-b62d-140800e3237c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:28:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa6c492e8cb33224a51f57682887951f40f011497e0c8344779603f3b602bce47","name":"砂粒","registered_at":"2026-06-16T01:45:04Z","symbol":"NIM0898459","token_address":"0x5fbbc786c4582ca035f0a460f8db5c1656169820","type":"artist","uuid":"23512e4e-6685-41bd-b62d-140800e3237c"}
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 0xa6c492e8cb33224a51f57682887951f40f011497e0c8344779603f3b602bce47. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23512e4e-6685-41bd-b62d-140800e3237c.json and https://artists.proofprofile.net/proofs/artist/23512e4e-6685-41bd-b62d-140800e3237c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0xa6c492e8cb33224a51f57682887951f40f011497e0c8344779603f3b602bce47","name":"砂粒","registered_at":"2026-06-16T01:45:04Z","symbol":"NIM0898459","token_address":"0x5fbbc786c4582ca035f0a460f8db5c1656169820","type":"artist","uuid":"23512e4e-6685-41bd-b62d-140800e3237c"}
album: モラトリアム・エモイスト・シンドローム
  type: MusicAlbum
  date published: 2017
  track: 思春期少年少女
    type: MusicRecording
    duration: PT3M34S
    duration ms: 214874
    explicit: false
    by artist: 砂粒
    in album: モラトリアム・エモイスト・シンドローム
      type: MusicAlbum
      date published: 2017
    genre: vocaloid
    isrc code: JPE561905538
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T03:19:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb54517a492525de94ebf666ed642b16754294ccfe070dbd89870019e03df021d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958234
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958234
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE561905538
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T03:46:09Z
    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 0xb54517a492525de94ebf666ed642b16754294ccfe070dbd89870019e03df021d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPE561905538.
      date published: 2026-07-16T03:46:09Z
    audio: 思春期少年少女
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 160.043
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.537
      additional property: Energy
        type: PropertyValue
        value: 0.768
      additional property: Speechiness
        type: PropertyValue
        value: 0.047
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.042
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.756
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.611
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: シンクロサイクロトロン・スピリチュアライザー。
    type: MusicRecording
    duration: PT4M43S
    duration ms: 283500
    explicit: false
    by artist: 砂粒
    in album: モラトリアム・エモイスト・シンドローム
      type: MusicAlbum
      date published: 2017
    genre: vocaloid
    isrc code: JPE561905540
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T19:17:15+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3bddc0f3ccbacfadc86c6c74795335efd5a2167a1054ecde0cc0ed0753d4baa1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE561905540
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0x3bddc0f3ccbacfadc86c6c74795335efd5a2167a1054ecde0cc0ed0753d4baa1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPE561905540.
      date published: 2026-07-05T01:12:41Z
    audio: シンクロサイクロトロン・スピリチュアライザー。
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 146.05
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.621
      additional property: Energy
        type: PropertyValue
        value: 0.746
      additional property: Speechiness
        type: PropertyValue
        value: 0.091
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.046
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.482
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: 少女ゼッキョウ。
album: 青春でぃすとらくしょん。
album: 東京メランコリータ
album: LSD
album: オワリ・コンプレックス
album: バンブーガール。
album: 玉響
album: きみとあいつと真夏の秘密
album: 春よ、恋。
album: 東京最終廃棄地帯
album: ラヴラッシュパレード

Loudness (dB)
type: PropertyValue
value: -5.126

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Minor

少女ゼッキョウ。
type: MusicAlbum
date published: 2018

青春でぃすとらくしょん。
type: MusicAlbum
date published: 2019

東京メランコリータ
type: MusicAlbum
date published: 2019

LSD
type: MusicAlbum
date published: 2020

オワリ・コンプレックス
type: MusicAlbum
date published: 2022

バンブーガール。
type: MusicAlbum
date published: 2022

玉響
type: MusicAlbum
date published: 2023

きみとあいつと真夏の秘密
type: MusicAlbum
date published: 2023

春よ、恋。
type: MusicAlbum
date published: 2025-09-19

東京最終廃棄地帯
type: MusicAlbum
date published: 2025-09-19

ラヴラッシュパレード
type: MusicAlbum
date published: 2025-09-19