赤乃わい
type: MusicGroup
genre: vocaloid
popularity: 16
followers: 2223
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953754
additional property: OTSProofURL
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additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/afe4121a-47d8-42bd-8d03-c62b3a76cb8b.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4bf04922a3da6a2c428c6d9fbdcffa2797d34dfa205c7d8ba05e0ef2c802e5. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afe4121a-47d8-42bd-8d03-c62b3a76cb8b.json and https://artists.proofprofile.net/proofs/artist/afe4121a-47d8-42bd-8d03-c62b3a76cb8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T06:45:19Z
  text: {"copyright_id":"0xce4bf04922a3da6a2c428c6d9fbdcffa2797d34dfa205c7d8ba05e0ef2c802e5","name":"赤乃わい","registered_at":"2026-06-14T22:55:52Z","symbol":"NIM0602669","token_address":"0xf4a168d12411d6f643c52d890f8450c3d735da64","type":"artist","uuid":"afe4121a-47d8-42bd-8d03-c62b3a76cb8b"}
album: GOOD SLEEP FOREVER
  type: MusicAlbum
  date published: 2019-04-05
album: GOOD SLEEP FOREVER
  type: MusicAlbum
  date published: 2019-04-05
album: Nighthawk,Nightmare
  type: MusicAlbum
  date published: 2020-07-22
album: Nighthawk,Nightmare
  type: MusicAlbum
  date published: 2020-07-22
album: 涙に傘
  type: MusicAlbum
  date published: 2020-09-25
album: 涙に傘
  type: MusicAlbum
  date published: 2020-09-25
album: 独断決行演奏会
  type: MusicAlbum
  date published: 2021-01-15
album: 夜桜リサーチ
  type: MusicAlbum
  date published: 2021-01-30
album: 夜桜リサーチ
  type: MusicAlbum
  date published: 2021-01-30
album: 泡影少女
  type: MusicAlbum
  date published: 2021-03-06
album: 泡影少女
  type: MusicAlbum
  date published: 2021-03-06
album: 泥む夏に水中花
  type: MusicAlbum
  date published: 2021-04-24
album: 泥む夏に水中花
  type: MusicAlbum
  date published: 2021-04-24
album: 陽だまりのセツナ
  type: MusicAlbum
  date published: 2022-11-09
track: 陽だまりのセツナ (feat. 初音ミク&巡音ルカ)

陽だまりのセツナ (feat. 初音ミク&巡音ルカ)
type: MusicRecording
duration: PT3M47S
duration ms: 227000
explicit: false
by artist: 赤乃わい
by artist: Hatsune Miku
by artist: Megurine Luka
in album: 初音ミク「マジカルミライ 2024」OFFICIAL ALBUM
  type: MusicAlbum
  date published: 2024-07-17
isrc code: JP92Q2200808
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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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
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: 953520
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T13:32:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5875d76587f6654ba3e721091e52d3d2b0bd0a17b93a599d691d16864860bd4d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JP92Q2200808.
  date published: 2026-06-13T13:32:09Z
audio: 陽だまりのセツナ (feat. 初音ミク&巡音ルカ)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.733
  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: 0.521
  additional property: Energy
    type: PropertyValue
    value: 0.708
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.009
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.131
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.348
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.846
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major