SAIJI
type: MusicGroup
genre: vocaloid
popularity: 13
followers: 441
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa6f2a007b9815b59e4f2f6e267f7c57e055053f155f8101121e8d4913568c748
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953794
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953794
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e0ec5f47-a8f2-42a2-949b-93f2236b8bac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e0ec5f47-a8f2-42a2-949b-93f2236b8bac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e0ec5f47-a8f2-42a2-949b-93f2236b8bac
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T13:43:35Z
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 0xa6f2a007b9815b59e4f2f6e267f7c57e055053f155f8101121e8d4913568c748. Chain 2 (Bitcoin): anchored in block 953794 (2026-06-15T13:43:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0ec5f47-a8f2-42a2-949b-93f2236b8bac.json and https://artists.proofprofile.net/proofs/artist/e0ec5f47-a8f2-42a2-949b-93f2236b8bac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T13:43:35Z
album: マインドヒーリング01
  type: MusicAlbum
  date published: 2021-02-09
album: 雨上がりに始まるストーリー
  type: MusicAlbum
  date published: 2021-04-07
album: BUILD BACK BETTER
  type: MusicAlbum
  date published: 2022-07-10
album: 18の君とドキュメンタリー
  type: MusicAlbum
  date published: 2022-07-21
album: 曇り空が明ける頃
  type: MusicAlbum
  date published: 2022-07-28
album: 夏は蜃気楼
  type: MusicAlbum
  date published: 2022-08-09
album: 心の裏垢
  type: MusicAlbum
  date published: 2022-08-17
album: 夜明けに歌う始まりの歌
  type: MusicAlbum
  date published: 2022-08-24
album: エササニの向こう側
  type: MusicAlbum
  date published: 2022-08-31
album: 18の君とドキュメンタリー
  type: MusicAlbum
  date published: 2022-09-07
album: 夏の思い出をこの場所に
  type: MusicAlbum
  date published: 2022-09-14
album: 真夏に濡れた少女
  type: MusicAlbum
  date published: 2022-09-21
album: Burst Blind Angel
  type: MusicAlbum
  date published: 2022-09-28
album: 秋があった日々
  type: MusicAlbum
  date published: 2022-10-05
album: 灰色の彼方へ
  type: MusicAlbum
  date published: 2022-10-12
album: デイゲームダンシング
  type: MusicAlbum
  date published: 2022-11-17
album: TWILIGHT CHRISTMAS
  type: MusicAlbum
  date published: 2022-12-05
album: CHRISTMAS CALLING
  type: MusicAlbum
  date published: 2022-12-21
album: EPISODE WHITE 01
  type: MusicAlbum
  date published: 2023-02-06
album: 願いを取り戻せたら
  type: MusicAlbum
  date published: 2023-04-03
album: いつか君の想いのまま花束を捧げよう
  type: MusicAlbum
  date published: 2023-04-28
album: ピアノで指を絡めて
  type: MusicAlbum
  date published: 2023-05-05
album: Born To Be Free
  type: MusicAlbum
  date published: 2023-06-01
album: 願いを取り戻せたら
  type: MusicAlbum
  date published: 2023-07-13
album: 絵が描けない僕がA.Iと魔法少女を描いた件
  type: MusicAlbum
  date published: 2023-08-18
album: 絆のキヅナ
  type: MusicAlbum
  date published: 2023-08-25
album: Psychical Love Psychical Heart
  type: MusicAlbum
  date published: 2023-08-28
album: 16th Holy SPECIAL
  type: MusicAlbum
  date published: 2023-09-21
album: Under The Starry
  type: MusicAlbum
  date published: 2023-10-30
album: 雨上がりに始まるストーリー
  type: MusicAlbum
  date published: 2023-11-16
album: RIDE ON NOW
  type: MusicAlbum
  date published: 2023-12-04
album: 秋色インプラントドリーム第2章 (可不Ver.)
  type: MusicAlbum
  date published: 2024-01-12
album: 儚くも今この場所で
  type: MusicAlbum
  date published: 2024-01-22
album: What's deepest tenderness
  type: MusicAlbum
  date published: 2024-02-13
album: ミクはルシファー
  type: MusicAlbum
  date published: 2024-02-27
album: SEDUCER
  type: MusicAlbum
  date published: 2024-03-11
album: Streaming Your Life
  type: MusicAlbum
  date published: 2024-05-07
album: 孤独を遠ざけるように
  type: MusicAlbum
  date published: 2024-06-03
album: 最後に手紙を
  type: MusicAlbum
  date published: 2024-06-06
album: 051405160517
  type: MusicAlbum
  date published: 2024-07-01
album: NEXT SUMMER LIGHTS
  type: MusicAlbum
  date published: 2024-07-16
album: 灰色の彼方へ
  type: MusicAlbum
  date published: 2024-08-05
album: 8月に焼け散らない渇望
  type: MusicAlbum
  date published: 2024-09-02
album: 君の涙は美しすぎた
  type: MusicAlbum
  date published: 2024-10-28
album: 言葉に揺れるように
  type: MusicAlbum
  date published: 2024-11-18
album: 虹と雨の狭間で
  type: MusicAlbum
  date published: 2024-12-16
album: 目覚めは天使のように
  type: MusicAlbum
  date published: 2025-01-13
album: あなたが壁を叩いた
  type: MusicAlbum
  date published: 2025-02-04
album: angel's breath
  type: MusicAlbum
  date published: 2025-03-06
  track: angel's breath
    type: MusicRecording
    duration: PT3M57S
    duration ms: 237000
    explicit: false
    by artist: SAIJI
    in album: angel's breath
      type: MusicAlbum
      date published: 2025-03-06
    genre: vocaloid
    isrc code: JPW462535673
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T16:59:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x68531544242123b1a786984d3f3f57a92182149d7ddbcfda6862cad92d177074
    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: angel's breath
album: 春の日差しを泳げば
album: 鼓動
album: 五月雨
album: SKY
album: ガーベラ
album: 真夏の七月のざわめき
album: ESCAPE FROM THE WORDS
album: MOONLIGHT PATH
album: STARRY TRAIL
album: SILENT SEPTEMBER KISS
album: カナリヤ
album: CINEMATIC
album: 幽体の誘惑 OST

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 958585

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958585

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462535673

OTSTimestamp
type: PropertyValue
value: 2026-07-18T17:05:16Z

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 0x68531544242123b1a786984d3f3f57a92182149d7ddbcfda6862cad92d177074. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/JPW462535673.
date published: 2026-07-18T17:05:16Z

angel's breath
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 134.931
additional property: Musical Key
  type: PropertyValue
  value: 2
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: 0.892
additional property: Speechiness
  type: PropertyValue
  value: 0.032
additional property: Acousticness
  type: PropertyValue
  value: 0.497
additional property: Instrumentalness
  type: PropertyValue
  value: 0.046
additional property: Liveness
  type: PropertyValue
  value: 0.112
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.485
additional property: Loudness (dB)
  type: PropertyValue
  value: -5.054
additional property: Key Name
  type: PropertyValue
  value: D
additional property: Mode Name
  type: PropertyValue
  value: Major

春の日差しを泳げば
type: MusicAlbum
date published: 2025-04-21
track: 春の日差しを泳げば
  type: MusicRecording
  duration: PT3M2S
  duration ms: 182000
  explicit: false
  by artist: SAIJI
  in album: 春の日差しを泳げば
    type: MusicAlbum
    date published: 2025-04-21
  genre: vocaloid
  isrc code: JPW462553708
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-18T17:14:25+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x15f812edfc5b552cc7fb140963a0bb93f151a9c830ee8828b222f9d3bcb8cd0a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958594
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958594
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462553708
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-18T18:05:01Z
  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 0x15f812edfc5b552cc7fb140963a0bb93f151a9c830ee8828b222f9d3bcb8cd0a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPW462553708.
    date published: 2026-07-18T18:05:01Z
  audio: 春の日差しを泳げば
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 150.01
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.511
    additional property: Energy
      type: PropertyValue
      value: 0.974
    additional property: Speechiness
      type: PropertyValue
      value: 0.081
    additional property: Acousticness
      type: PropertyValue
      value: 0.09
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.37
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.51
    additional property: Loudness (dB)
      type: PropertyValue
      value: -3.509
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major

鼓動
type: MusicAlbum
date published: 2025-05-14
track: Still You're Right Here
  type: MusicRecording
  duration: PT2M20S
  duration ms: 140657
  explicit: false
  by artist: SAIJI
  in album: 鼓動
    type: MusicAlbum
    date published: 2025-05-14
  genre: vocaloid
  isrc code: JPW462553754
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-18T18:20:46+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd7c86edc3633b259b3bd0b921c55ae09d91857da32d196c064789637f2637eb0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958596
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958596
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462553754
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-18T18:42:38Z
  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 0xd7c86edc3633b259b3bd0b921c55ae09d91857da32d196c064789637f2637eb0. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/JPW462553754.
    date published: 2026-07-18T18:42:38Z
  audio: Still You're Right Here
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 140.029
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.58
    additional property: Energy
      type: PropertyValue
      value: 0.977
    additional property: Speechiness
      type: PropertyValue
      value: 0.058
    additional property: Acousticness
      type: PropertyValue
      value: 0.224
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.111
    additional property: Liveness
      type: PropertyValue
      value: 0.342
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.535
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.6
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: angel's breath
  type: MusicRecording
  duration: PT3M57S
  duration ms: 237000
  explicit: false
  by artist: SAIJI
  in album: 鼓動
    type: MusicAlbum
    date published: 2025-05-14
  genre: vocaloid
  isrc code: JPW462553755
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T08:46:00+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x1188c3d4b941fad8025f3d0cf4386ecfdb39e136d1b00db02fa22a7c4f65cca8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958853
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958853
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462553755
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T11:48:18Z
  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 0x1188c3d4b941fad8025f3d0cf4386ecfdb39e136d1b00db02fa22a7c4f65cca8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:18Z), 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/JPW462553755.
    date published: 2026-07-20T11:48:18Z
  audio: angel's breath
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 134.931
    additional property: Musical Key
      type: PropertyValue
      value: 2
    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: 0.892
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.497
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.046
    additional property: Liveness
      type: PropertyValue
      value: 0.112
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.484
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.054
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 虹と雨の狭間で
  type: MusicRecording
  duration: PT3M8S
  duration ms: 188000
  explicit: false
  by artist: SAIJI
  in album: 鼓動
    type: MusicAlbum
    date published: 2025-05-14
  genre: vocaloid
  isrc code: JPW462553756
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T02:28:09+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x74d2094beed23937dfd147136ba26e7afc2a71793ea9b13cfbda24b2c84c13cf
  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
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: 虹と雨の狭間で
track: 最後に手紙を

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW462553756

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
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date published: 2026-07-05T10:01:46Z

虹と雨の狭間で
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最後に手紙を
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T10:01:58Z
audio: 最後に手紙を
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五月雨
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-22T15:38:35Z
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SKY
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date published: 2025-06-30

ガーベラ
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date published: 2025-07-01
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-17T08:20:01Z
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真夏の七月のざわめき
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date published: 2025-07-22

ESCAPE FROM THE WORDS
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date published: 2025-08-15

MOONLIGHT PATH
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date published: 2025-08-26

STARRY TRAIL
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date published: 2025-08-26

SILENT SEPTEMBER KISS
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date published: 2025-09-15

カナリヤ
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date published: 2025-10-20
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-22T19:29:28Z
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CINEMATIC
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date published: 2025-11-04

幽体の誘惑 OST
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date published: 2025-11-13