Ryo Takahashi
type: MusicGroup
description: Ryo Takahashi may refer to: , Japanese footballer , Japanese footballer , Japanese musician and composer
popularity: 23
followers: 862
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1ef0bab3715fe4329dccf880e5b484267cb87600d9af9ae6b75bbd51b1e51874
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/ae307681-8f14-45a6-b07b-6579eec10ac0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ae307681-8f14-45a6-b07b-6579eec10ac0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ae307681-8f14-45a6-b07b-6579eec10ac0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1ef0bab3715fe4329dccf880e5b484267cb87600d9af9ae6b75bbd51b1e51874","name":"Ryo Takahashi","registered_at":"2026-06-12T07:11:51Z","symbol":"NIM0224448","token_address":"0x479e2ef21031cc22bde1e07e5657a6bf3e037d00","type":"artist","uuid":"ae307681-8f14-45a6-b07b-6579eec10ac0"}
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 0x1ef0bab3715fe4329dccf880e5b484267cb87600d9af9ae6b75bbd51b1e51874. 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/ae307681-8f14-45a6-b07b-6579eec10ac0.json and https://artists.proofprofile.net/proofs/artist/ae307681-8f14-45a6-b07b-6579eec10ac0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x1ef0bab3715fe4329dccf880e5b484267cb87600d9af9ae6b75bbd51b1e51874","name":"Ryo Takahashi","registered_at":"2026-06-12T07:11:51Z","symbol":"NIM0224448","token_address":"0x479e2ef21031cc22bde1e07e5657a6bf3e037d00","type":"artist","uuid":"ae307681-8f14-45a6-b07b-6579eec10ac0"}
album: TV Animation "Classroom of the Elite" Ongakushu
  type: MusicAlbum
  date published: 2018-01-10
  track: Namida no Iro
    type: MusicRecording
    duration: PT3M5S
    duration ms: 185866
    explicit: false
    by artist: Ryo Takahashi
    in album: TV Animation "Classroom of the Elite" Ongakushu
      type: MusicAlbum
      date published: 2018-01-10
    isrc code: JPI101702818
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T14:53:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc70ea49a12a71e6812402ffa37a662e40dfe1561f25bf7401faceac51a0d1e63
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958901
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958901
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101702818
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T15:07:00Z
    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 0xc70ea49a12a71e6812402ffa37a662e40dfe1561f25bf7401faceac51a0d1e63. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/JPI101702818.
      date published: 2026-07-20T15:07:00Z
    audio: Namida no Iro
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 83.884
      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: 0.584
      additional property: Energy
        type: PropertyValue
        value: 0.024
      additional property: Speechiness
        type: PropertyValue
        value: 0.052
      additional property: Acousticness
        type: PropertyValue
        value: 0.994
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.876
      additional property: Liveness
        type: PropertyValue
        value: 0.077
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.044
      additional property: Loudness (dB)
        type: PropertyValue
        value: -29.423
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Reitetsu na Game no Shihaisha
    type: MusicRecording
    duration: PT1M32S
    duration ms: 92546
    explicit: false
    by artist: Ryo Takahashi
    in album: TV Animation "Classroom of the Elite" Ongakushu
      type: MusicAlbum
      date published: 2018-01-10
    isrc code: JPI101702819
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T16:19:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2a4e1c0682567a764b085c27e577737ec878b3e49e245cc9ce9239ce5803deae
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957880
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957880
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101702819
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T16:39:18Z
    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 0x2a4e1c0682567a764b085c27e577737ec878b3e49e245cc9ce9239ce5803deae. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/JPI101702819.
      date published: 2026-07-13T16:39:18Z
    audio: Reitetsu na Game no Shihaisha
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 121.974
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.481
      additional property: Energy
        type: PropertyValue
        value: 0.261
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.1
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.868
      additional property: Liveness
        type: PropertyValue
        value: 0.102
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.41
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Kako to no Mukiai
  track: Benron to iu Chikara
  track: Koigokoro ni Kizuku
  track: Jinsei to wa Nazo no Renzoku da
album: shuffle
album: current
album: Smile of the Arsnotoria the Animation Original Soundtrack

Loudness (dB)
type: PropertyValue
value: -16.484

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Minor

Kako to no Mukiai
type: MusicRecording
duration: PT1M29S
duration ms: 89040
explicit: false
by artist: Ryo Takahashi
in album: TV Animation "Classroom of the Elite" Ongakushu
  type: MusicAlbum
  date published: 2018-01-10
isrc code: JPI101702821
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-13T16:10:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcb17f5710c7bff44471982be02c7707d4e730274eac8a69ff52489efdb12cb54
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957880
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957880
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101702821
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-13T16:39:18Z
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 0xcb17f5710c7bff44471982be02c7707d4e730274eac8a69ff52489efdb12cb54. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/JPI101702821.
  date published: 2026-07-13T16:39:18Z
audio: Kako to no Mukiai
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.182
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.436
  additional property: Energy
    type: PropertyValue
    value: 0.004
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.85
  additional property: Liveness
    type: PropertyValue
    value: 0.08
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.363
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.642
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Benron to iu Chikara
type: MusicRecording
duration: PT2M6S
duration ms: 126840
explicit: false
by artist: Ryo Takahashi
in album: TV Animation "Classroom of the Elite" Ongakushu
  type: MusicAlbum
  date published: 2018-01-10
isrc code: JPI101702829
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-21T12:33:48+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd8e5dd9f68b3466808e2b3ceb2dc684fb29813f3c35cc1e8a7dc324bb94254d7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959008
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959008
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101702829
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T13:14:05Z
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 0xd8e5dd9f68b3466808e2b3ceb2dc684fb29813f3c35cc1e8a7dc324bb94254d7. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/JPI101702829.
  date published: 2026-07-21T13:14:05Z
audio: Benron to iu Chikara
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 135.021
  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: 0.586
  additional property: Energy
    type: PropertyValue
    value: 0.914
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.092
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.918
  additional property: Liveness
    type: PropertyValue
    value: 0.118
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.67
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.811
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Koigokoro ni Kizuku
type: MusicRecording
duration: PT1M51S
duration ms: 111813
explicit: false
by artist: Ryo Takahashi
in album: TV Animation "Classroom of the Elite" Ongakushu
  type: MusicAlbum
  date published: 2018-01-10
isrc code: JPI101702810
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T17:18:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x54abbfec718224e13c5463df9b181d277f1e987201abd5aea0fcf21e0b0be16f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956826
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956826
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101702810
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T19:27:56Z
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 0x54abbfec718224e13c5463df9b181d277f1e987201abd5aea0fcf21e0b0be16f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPI101702810.
  date published: 2026-07-05T19:27:56Z
audio: Koigokoro ni Kizuku
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 139.978
  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: 0.52
  additional property: Energy
    type: PropertyValue
    value: 0.11
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.232
  additional property: Liveness
    type: PropertyValue
    value: 0.211
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.227
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.601
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Jinsei to wa Nazo no Renzoku da
type: MusicRecording
duration: PT2M15S
duration ms: 135186
explicit: false
by artist: Ryo Takahashi
in album: TV Animation "Classroom of the Elite" Ongakushu
  type: MusicAlbum
  date published: 2018-01-10
isrc code: JPI101702813
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T11:40:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x53186d3866dd7d73cd68a252e430cadcb7ec55cae53fb801ab316b23adacd078
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956725
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956725
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101702813
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T01:12:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x53186d3866dd7d73cd68a252e430cadcb7ec55cae53fb801ab316b23adacd078. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101702813.
  date published: 2026-07-05T01:12:41Z
audio: Jinsei to wa Nazo no Renzoku da
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 98.196
  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: 0.282
  additional property: Energy
    type: PropertyValue
    value: 0.043
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.367
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.465
  additional property: Liveness
    type: PropertyValue
    value: 0.116
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.757
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

shuffle
type: MusicAlbum
date published: 2020-04-22

shuffle
type: MusicAlbum
date published: 2020-04-22

current
type: MusicAlbum
date published: 2020-04-22

current
type: MusicAlbum
date published: 2020-04-22

current
type: MusicAlbum
date published: 2020-04-22

shuffle
type: MusicAlbum
date published: 2020-04-22

Smile of the Arsnotoria the Animation Original Soundtrack
type: MusicAlbum
date published: 2022-07-07

Smile of the Arsnotoria the Animation Original Soundtrack
type: MusicAlbum
date published: 2022-09-14