Osamuraisan
type: MusicGroup
genre: vocaloid
popularity: 26
followers: 29195
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x86b7b5c38def3760e70ef26c24306613cb06901d3de7e6a77170c71638b26cbe
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/bea2e632-eeb1-4b3c-9251-92dd853048ab.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bea2e632-eeb1-4b3c-9251-92dd853048ab.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bea2e632-eeb1-4b3c-9251-92dd853048ab
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b7b5c38def3760e70ef26c24306613cb06901d3de7e6a77170c71638b26cbe. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bea2e632-eeb1-4b3c-9251-92dd853048ab.json and https://artists.proofprofile.net/proofs/artist/bea2e632-eeb1-4b3c-9251-92dd853048ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
album: Osamuraisan Selection vol.3 ~Vocalist&Guitarist~
  type: MusicAlbum
  date published: 2012-08-12
  track: magnet [feat. kony & Yuuto] - Osamuraisan ver.
    type: MusicRecording
    duration: PT4M4S
    duration ms: 244719
    explicit: false
    by artist: Osamuraisan
    in album: Osamuraisan Selection vol.3 ~Vocalist&Guitarist~
      type: MusicAlbum
      date published: 2012-08-12
    genre: vocaloid
    isrc code: TCJPG1716899
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T02:33:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x26826c5d541d337614b9fed12da623332ec4d44af82582d21c6e94738e092676
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958808
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958808
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPG1716899
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T05:36:36Z
    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 0x26826c5d541d337614b9fed12da623332ec4d44af82582d21c6e94738e092676. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:36Z), 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/TCJPG1716899.
      date published: 2026-07-20T05:36:36Z
    audio: magnet [feat. kony & Yuuto] - Osamuraisan ver.
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.332
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.502
      additional property: Energy
        type: PropertyValue
        value: 0.582
      additional property: Speechiness
        type: PropertyValue
        value: 0.064
      additional property: Acousticness
        type: PropertyValue
        value: 0.623
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.094
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.767
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.045
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Rinne [feat. Glutamine] - Osamuraisan ver.
    type: MusicRecording
    duration: PT4M16S
    duration ms: 256317
    explicit: false
    by artist: Osamuraisan
    in album: Osamuraisan Selection vol.3 ~Vocalist&Guitarist~
      type: MusicAlbum
      date published: 2012-08-12
    genre: vocaloid
    isrc code: TCJPG1716901
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T20:37:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x44ffe49ad700b2a790228471a06973fb5b8aca53676bca37e01442ca63a2f1c5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958455
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958455
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPG1716901
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T21:28:36Z
    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 0x44ffe49ad700b2a790228471a06973fb5b8aca53676bca37e01442ca63a2f1c5. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCJPG1716901.
      date published: 2026-07-17T21:28:36Z
    audio: Rinne [feat. Glutamine] - Osamuraisan ver.
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 114.97
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.838
      additional property: Energy
        type: PropertyValue
        value: 0.529
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.615
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.107
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.667
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.679
      additional property: Key Name
      additional property: Mode Name
album: おさむらいさんせれくしょんvol.3 ～唄ひて弾きて～
album: Shoubu Zenya Ginpuu -Utaite Ban-
album: Shoubu Zenya Gengetsu -Hikite Ban-
album: 勝負前夜 弦月 ~弾き手盤~
album: 勝負前夜 吟風 ~歌い手盤~
album: Osamuraisan Selection Vol.40mP
album: おさむらいさんせれくしょんVol.40mP
album: 君の影を奪う
album: Kimi no kage wo ubau
album: Osamuraisan Selection vol.6 ~Japanese Rock~
album: おさむらいさんせれくしょんvol.6 ～邦ロック～
album: おさむらいさんせれくしょんvol.7 ～ぼさろん～
album: Osamuraisan Selection Vol.7 ~bOsaLon~
album: 夢を見る意味
album: Meanings of Dreams
album: おさむらいさんせれくしょんvol.8 ～唄ひて弾きて～
album: Osamuraisan Selection vol.8 ~Vocalist&Guitarist~
album: waver
album: Hydrangea Clings
album: 紫陽花は縋り付く
album: Kagehibana
album: 影火花
album: おさむらいさんせれくしょんvol.9 ～アコギを重ねてみた～
album: Osamuraisan Selection vol.9 ~Guitar Ensemble~
album: You were here.
album: UNGAISOUTEN
album: 雲外蒼天
album: Breathing
album: 呼吸
album: オルゴールで聴くおさむらいさん
album: Relaxing music box collection of Osamuraisan
album: Spring Breeze (Calming Ver.)
album: 春風 (はるうららVer.)

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor

おさむらいさんせれくしょんvol.3 ～唄ひて弾きて～
type: MusicAlbum
date published: 2012-08-12

Shoubu Zenya Ginpuu -Utaite Ban-
type: MusicAlbum
date published: 2013
track: Yobanashi Deceive
  type: MusicRecording
  duration: PT3M16S
  duration ms: 196661
  explicit: false
  by artist: Osamuraisan
  in album: Shoubu Zenya Ginpuu -Utaite Ban-
    type: MusicAlbum
    date published: 2013
  genre: vocaloid
  isrc code: JPC231300717
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T20:54:05+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc21222718646fd4c0faa2290070e3e584890fa75da9d0d7d1101b4ee9a86ed0e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958462
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958462
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231300717
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T23:17:53Z
  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 0xc21222718646fd4c0faa2290070e3e584890fa75da9d0d7d1101b4ee9a86ed0e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPC231300717.
    date published: 2026-07-17T23:17:53Z
  audio: Yobanashi Deceive
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 129.908
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.751
    additional property: Energy
      type: PropertyValue
      value: 0.705
    additional property: Speechiness
      type: PropertyValue
      value: 0.072
    additional property: Acousticness
      type: PropertyValue
      value: 0.394
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.039
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.925
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.696
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Tokyo Teddy Bear
  type: MusicRecording
  duration: PT4M10S
  duration ms: 250004
  explicit: false
  by artist: Osamuraisan
  in album: Shoubu Zenya Ginpuu -Utaite Ban-
    type: MusicAlbum
    date published: 2013
  genre: vocaloid
  isrc code: JPC231300721
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T22:19:42+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x550ee097618d00df5844bf7194def14cc304d4d3804052242913da37278d7566
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958211
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958211
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231300721
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T01:22:21Z
  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 0x550ee097618d00df5844bf7194def14cc304d4d3804052242913da37278d7566. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:22:21Z), 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/JPC231300721.
    date published: 2026-07-16T01:22:21Z
  audio: Tokyo Teddy Bear
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 79.991
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.714
    additional property: Energy
      type: PropertyValue
      value: 0.424
    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.775
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.076
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.712
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.002
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Shoubu Zenya Gengetsu -Hikite Ban-
type: MusicAlbum
date published: 2013

勝負前夜 弦月 ~弾き手盤~
type: MusicAlbum
date published: 2013-08-07
track: 千本桜
  type: MusicRecording
  duration: PT4M5S
  duration ms: 245328
  explicit: false
  by artist: Osamuraisan
  in album: 勝負前夜 弦月 ~弾き手盤~
    type: MusicAlbum
    date published: 2013-08-07
  genre: vocaloid
  isrc code: JPC231300744
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T02:59:05+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7980ce11b308e9adeae8e63bcb904a3c0fd439929f1551a119b7f0368b9842f2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958812
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958812
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231300744
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T03:24:09Z
  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 0x7980ce11b308e9adeae8e63bcb904a3c0fd439929f1551a119b7f0368b9842f2. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPC231300744.
    date published: 2026-07-20T03:24:09Z
  audio: 千本桜
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 154.004
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.574
    additional property: Energy
      type: PropertyValue
      value: 0.926
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.645
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.83
    additional property: Liveness
      type: PropertyValue
      value: 0.328
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.927
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.309
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major

勝負前夜 吟風 ~歌い手盤~
type: MusicAlbum
date published: 2013-08-07
track: 夜咄ディセイブ feat.しゃむおん
  type: MusicRecording
  duration: PT3M16S
  duration ms: 196661
  explicit: false
  by artist: Osamuraisan
  in album: 勝負前夜 吟風 ~歌い手盤~
    type: MusicAlbum
    date published: 2013-08-07
  genre: vocaloid
  isrc code: JPC231300717
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc21222718646fd4c0faa2290070e3e584890fa75da9d0d7d1101b4ee9a86ed0e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958544
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958544
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC231300717
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-18T12:14:37Z
  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
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    date published: 2026-07-05T19:27:56Z
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-06T01:25:57Z

吉原ラメント feat.そらる
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Osamuraisan Selection Vol.40mP
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おさむらいさんせれくしょんVol.40mP
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君の影を奪う
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Kimi no kage wo ubau
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Osamuraisan Selection vol.6 ~Japanese Rock~
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おさむらいさんせれくしょんvol.6 ～邦ロック～
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date published: 2015-08-14

おさむらいさんせれくしょんvol.7 ～ぼさろん～
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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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Osamuraisan Selection Vol.7 ~bOsaLon~
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-17T19:12:23Z
  audio: Happy Synthesizer (feat. Lon)
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track: rain stops, good-bye (feat. Lon)
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track: Asunoyozora shokai han (on Guitar)
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OpenTimestamps Proof of Existence
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date published: 2026-07-20T18:03:03Z

Asunoyozora shokai han (on Guitar)
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夢を見る意味
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Meanings of Dreams
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おさむらいさんせれくしょんvol.8 ～唄ひて弾きて～
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date published: 2017-08-11

Osamuraisan Selection vol.8 ~Vocalist&Guitarist~
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waver
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Hydrangea Clings
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紫陽花は縋り付く
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Kagehibana
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影火花
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おさむらいさんせれくしょんvol.9 ～アコギを重ねてみた～
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Osamuraisan Selection vol.9 ~Guitar Ensemble~
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You were here.
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UNGAISOUTEN
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雲外蒼天
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Breathing
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呼吸
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オルゴールで聴くおさむらいさん
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Relaxing music box collection of Osamuraisan
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Kagehibana
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影火花
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Spring Breeze (Calming Ver.)
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春風 (はるうららVer.)
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