fumika
type: MusicGroup
genre: anime
genre: j-pop
description: Fumika (written: 史華, 史佳, 史加, 文香, 富美加 or ふみか in hiragana) is a feminine Japanese given name. Notable people with the name include: , Japanese actress and model , Japanese volleyball player , Japanese
popularity: 27
followers: 8259
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe6f534ae1d1612e1ad3109bade0d4a69afa1c26ab3fa46ca53ad1de005146f37
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cd3a2439-064e-49ec-89ec-cfe52690b09f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cd3a2439-064e-49ec-89ec-cfe52690b09f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cd3a2439-064e-49ec-89ec-cfe52690b09f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
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 0xe6f534ae1d1612e1ad3109bade0d4a69afa1c26ab3fa46ca53ad1de005146f37. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd3a2439-064e-49ec-89ec-cfe52690b09f.json and https://artists.proofprofile.net/proofs/artist/cd3a2439-064e-49ec-89ec-cfe52690b09f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
album: 天国のドア〜Winter Mix〜
  type: MusicAlbum
  date published: 2010-12-03
album: snowflakes
  type: MusicAlbum
  date published: 2010-12-29
album: アオイトリ
  type: MusicAlbum
  date published: 2011-06-08
album: アオイトリ
  type: MusicAlbum
  date published: 2011-06-08
album: たいせつな光
  type: MusicAlbum
  date published: 2011-09-28
album: たいせつな光
  type: MusicAlbum
  date published: 2011-09-28
album: Change the world
  type: MusicAlbum
  date published: 2012-03-21
album: 終わらない花
  type: MusicAlbum
  date published: 2012-05-09
album: 隣にいたかった
  type: MusicAlbum
  date published: 2012-06-27
album: その声消えないよ
  type: MusicAlbum
  date published: 2012-09-26
album: 海風のブレイブ アニメサイズ
  type: MusicAlbum
  date published: 2012-11-01
album: 海風のブレイブ
  type: MusicAlbum
  date published: 2012-11-07
album: 海風のブレイブ
  type: MusicAlbum
  date published: 2012-11-07
album: 旅立ちのベル
  type: MusicAlbum
  date published: 2013-01-23
album: POP SISTER
  type: MusicAlbum
  date published: 2013-02-06
  track: たいせつな光
    type: MusicRecording
    duration: PT5M42S
    duration ms: 342586
    explicit: false
    by artist: fumika
    in album: POP SISTER
      type: MusicAlbum
      date published: 2013-02-06
    genre: anime
    genre: j-pop
    isrc code: JPBV01121581
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T23:18:05+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x82cacd26c15eccbadab90ea1ea65adb269861e87dd7f4ffa2b21b3ff366d2038
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPBV01121581
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 0x82cacd26c15eccbadab90ea1ea65adb269861e87dd7f4ffa2b21b3ff366d2038. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPBV01121581.
      date published: 2026-07-04T11:19:20Z
    audio: たいせつな光
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 75.956
      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: 0.463
      additional property: Energy
        type: PropertyValue
        value: 0.644
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.435
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.106
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.251
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: 時を越えて
    type: MusicRecording
    duration: PT5M53S
    duration ms: 353813
    explicit: false
    by artist: fumika
    in album: POP SISTER
      type: MusicAlbum
      date published: 2013-02-06
    genre: anime
    genre: j-pop
    isrc code: JPBV01221822
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T05:25:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9c086985fdfd0c880cffe320bc5b1f3fa1b27dd8ed7dd726627b2cc7e846cf7c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPBV01221822
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: 時を越えて
  track: 海風のブレイブ
album: 遠く遠く
album: 泣きたい僕ら
album: あ~よかった
album: 消せない約束
album: POWER OF VOICE
album: Story/akari
album: You're my Hero/FIGHTER
album: あなたのいない、この世界で。 / DANGEROUS feat.RG
album: あなたのいない、この世界で。 / DANGEROUS
album: 紡ぎノ島
album: 花束に込めて
album: アンマー
album: ありがとう
album: 100万回の「I love you」
album: 鱗（うろこ）
album: ベイビー・アイラブユー
album: 海の声
album: secret base ~君がくれたもの~
album: 夏の終わり
album: COVER LIFE
album: 冬物語
album: 無理かもって思ったら それより先に進めない
album: アマリリス
album: ピリッと大スキ♡
album: んなら、またね。
album: VARIOUSELF
album: Free feat. MOP of HEAD
album: Free
album: ハピバ!
album: あかね空
album: kotoage
album: ボクとキミを繋ぐモノ
album: late first-step
album: 100 leaves clover
album: きっと、ずっと。
album: MY LIFE - Hello Again -
album: Ring The Bell
album: ぬくもり
album: single flower (feat. PM7:30) [band arrangement ver.]
album: heart made of paper (feat. Otozatoke) [music-box arrange ver.]
album: How to make tomorrow (feat. PM7:30) [brighter ver.]
album: I saw the sky after a long time (feat. Otozatoke) [another-day ver.]
album: Ripe time -a certain story of two-
album: #Current-Sky (feat. Otozatoke)
album: Girls dreaming all times and places
album: Wind scattering cherry blossoms
album: 雪のような恋だった

OTSTimestamp
type: PropertyValue
value: 2026-07-05T10:01:46Z

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 0x9c086985fdfd0c880cffe320bc5b1f3fa1b27dd8ed7dd726627b2cc7e846cf7c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPBV01221822.
date published: 2026-07-05T10:01:46Z

時を越えて
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 144.032
additional property: Musical Key
  type: PropertyValue
  value: 8
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.53
additional property: Energy
  type: PropertyValue
  value: 0.604
additional property: Speechiness
  type: PropertyValue
  value: 0.026
additional property: Acousticness
  type: PropertyValue
  value: 0.109
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.075
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.303
additional property: Loudness (dB)
  type: PropertyValue
  value: -4.839
additional property: Key Name
  type: PropertyValue
  value: Ab
additional property: Mode Name
  type: PropertyValue
  value: Major

海風のブレイブ
type: MusicRecording
duration: PT3M59S
duration ms: 239826
explicit: false
by artist: fumika
in album: POP SISTER
  type: MusicAlbum
  date published: 2013-02-06
genre: anime
genre: j-pop
isrc code: JPBV01221821
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T10:21:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3f3babb826af8fdc04ea2f21b35eed349a21227f60c608b8175773a91fe84792
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956639
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956639
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPBV01221821
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-04T11:19:20Z
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 0x3f3babb826af8fdc04ea2f21b35eed349a21227f60c608b8175773a91fe84792. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPBV01221821.
  date published: 2026-07-04T11:19:20Z
audio: 海風のブレイブ
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 155.987
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.423
  additional property: Energy
    type: PropertyValue
    value: 0.906
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.042
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.303
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.717
  additional property: Loudness (dB)
    type: PropertyValue
    value: -2.596
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

POP SISTER
type: MusicAlbum
date published: 2013-02-06

遠く遠く
type: MusicAlbum
date published: 2013-08-28

泣きたい僕ら
type: MusicAlbum
date published: 2014-01-29

あ~よかった
type: MusicAlbum
date published: 2014-04-30

消せない約束
type: MusicAlbum
date published: 2014-07-16

消せない約束
type: MusicAlbum
date published: 2014-08-06

POWER OF VOICE
type: MusicAlbum
date published: 2015-01-21
track: ドアの向こうへ
  type: MusicRecording
  duration: PT5M23S
  duration ms: 323906
  explicit: false
  by artist: fumika
  in album: POWER OF VOICE
    type: MusicAlbum
    date published: 2015-01-21
  genre: anime
  genre: j-pop
  isrc code: JPN001400468
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T10:12:34+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x1a3a92abcf9f032de2c34ecb5e9f8d10797069261f6bf788a9c1451846586301
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958397
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958397
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN001400468
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T10:29:45Z
  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 0x1a3a92abcf9f032de2c34ecb5e9f8d10797069261f6bf788a9c1451846586301. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JPN001400468.
    date published: 2026-07-17T10:29:45Z
  audio: ドアの向こうへ
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 147.856
    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: 0.495
    additional property: Energy
      type: PropertyValue
      value: 0.832
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.06
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.317
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.377
    additional property: Loudness (dB)
      type: PropertyValue
      value: -2.913
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 消せない約束
  type: MusicRecording
  duration: PT5M9S
  duration ms: 309120
  explicit: false
  by artist: fumika
  in album: POWER OF VOICE
    type: MusicAlbum
    date published: 2015-01-21
  genre: anime
  genre: j-pop
  isrc code: JPN001400295
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T07:30:38+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0e96ddea7b9b9440dac44d6a4b7a840ca32c4895b2a8917fef8c367099ddd225
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958121
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958121
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN001400295
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T08:02:12Z
  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 0x0e96ddea7b9b9440dac44d6a4b7a840ca32c4895b2a8917fef8c367099ddd225. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/JPN001400295.
    date published: 2026-07-15T08:02:12Z
  audio: 消せない約束
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 82.998
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.558
    additional property: Energy
      type: PropertyValue
      value: 0.718
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.522
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.088
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.699
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.274
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 10000回のありがとう
  type: MusicRecording
  duration: PT4M36S
  duration ms: 276400
  explicit: false
  by artist: fumika
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  audio: 10000回のありがとう

OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSVerifyInstructions
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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
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date published: 2026-07-05T19:27:56Z

10000回のありがとう
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POWER OF VOICE
type: MusicAlbum
date published: 2015-01-28

Story/akari
type: MusicAlbum
date published: 2015-11-11

Story/akari
type: MusicAlbum
date published: 2015-11-11

You're my Hero/FIGHTER
type: MusicAlbum
date published: 2016-11-23

You're my Hero/FIGHTER
type: MusicAlbum
date published: 2016-11-23

あなたのいない、この世界で。 / DANGEROUS feat.RG
type: MusicAlbum
date published: 2017-07-12

あなたのいない、この世界で。 / DANGEROUS
type: MusicAlbum
date published: 2017-07-12

紡ぎノ島
type: MusicAlbum
date published: 2017-09-24

紡ぎノ島
type: MusicAlbum
date published: 2017-10-04

花束に込めて
type: MusicAlbum
date published: 2017-11-29

花束に込めて
type: MusicAlbum
date published: 2017-11-29

アンマー
type: MusicAlbum
date published: 2018-05-16

アンマー
type: MusicAlbum
date published: 2018-05-16

ありがとう
type: MusicAlbum
date published: 2018-06-06

100万回の「I love you」
type: MusicAlbum
date published: 2018-06-20

鱗（うろこ）
type: MusicAlbum
date published: 2018-06-27

鱗（うろこ）
type: MusicAlbum
date published: 2018-06-27

100万回の「I love you」
type: MusicAlbum
date published: 2018-07-04

ベイビー・アイラブユー
type: MusicAlbum
date published: 2018-07-18

海の声
type: MusicAlbum
date published: 2018-08-08

海の声
type: MusicAlbum
date published: 2018-08-08

secret base ~君がくれたもの~
type: MusicAlbum
date published: 2018-08-22

夏の終わり
type: MusicAlbum
date published: 2018-09-05

COVER LIFE
type: MusicAlbum
date published: 2018-11-14

COVER LIFE
type: MusicAlbum
date published: 2018-11-14

冬物語
type: MusicAlbum
date published: 2018-12-05

冬物語
type: MusicAlbum
date published: 2018-12-05

無理かもって思ったら それより先に進めない
type: MusicAlbum
date published: 2019-03-28

無理かもって思ったら それより先に進めない
type: MusicAlbum
date published: 2019-03-28

アマリリス
type: MusicAlbum
date published: 2019-07-03

アマリリス
type: MusicAlbum
date published: 2019-07-03

ピリッと大スキ♡
type: MusicAlbum
date published: 2019-08-14

ピリッと大スキ♡
type: MusicAlbum
date published: 2019-08-14

んなら、またね。
type: MusicAlbum
date published: 2019-10-01

VARIOUSELF
type: MusicAlbum
date published: 2019-10-23

VARIOUSELF
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date published: 2019-10-23
track: あなたのいない、この世界で。
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    type: MusicAlbum
    date published: 2019-10-23
  genre: anime
  genre: j-pop
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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    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
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    date published: 2026-07-17T12:08:48Z
  audio: あなたのいない、この世界で。
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track: 冬物語
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  genre: anime
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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 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
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    date published: 2026-07-21T18:40:26Z
  audio: 冬物語
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Free feat. MOP of HEAD
type: MusicAlbum
date published: 2020-01-15

Free
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date published: 2020-01-15

ハピバ!
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date published: 2020-04-10

あかね空
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date published: 2021-12-16

kotoage
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ボクとキミを繋ぐモノ
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date published: 2022-03-25
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-03T19:59:51Z
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late first-step
type: MusicAlbum
date published: 2023-04-27

100 leaves clover
type: MusicAlbum
date published: 2023-05-11

きっと、ずっと。
type: MusicAlbum
date published: 2023-06-21

MY LIFE - Hello Again -
type: MusicAlbum
date published: 2023-06-21

Ring The Bell
type: MusicAlbum
date published: 2023-09-27

ぬくもり
type: MusicAlbum
date published: 2023-12-06

single flower (feat. PM7:30) [band arrangement ver.]
type: MusicAlbum
date published: 2024-05-03

heart made of paper (feat. Otozatoke) [music-box arrange ver.]
type: MusicAlbum
date published: 2024-05-04

How to make tomorrow (feat. PM7:30) [brighter ver.]
type: MusicAlbum
date published: 2024-05-05

I saw the sky after a long time (feat. Otozatoke) [another-day ver.]
type: MusicAlbum
date published: 2024-05-06

Ripe time -a certain story of two-
type: MusicAlbum
date published: 2024-07-15

#Current-Sky (feat. Otozatoke)
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date published: 2024-08-03

Girls dreaming all times and places
type: MusicAlbum
date published: 2024-12-23

Wind scattering cherry blossoms
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date published: 2025-04-12

雪のような恋だった
type: MusicAlbum
date published: 2025-11-12