OLDUCT
type: MusicGroup
genre: vocaloid
popularity: 13
followers: 265
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x515ebd60a66f2da487458cfade9260a8613f6dbbdf9bbc9805353ab04a5d86ba
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953770
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953770
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c1354cb9-3f4a-400a-b2c0-521190cfdebb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c1354cb9-3f4a-400a-b2c0-521190cfdebb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c1354cb9-3f4a-400a-b2c0-521190cfdebb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T09:50:11Z
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 0x515ebd60a66f2da487458cfade9260a8613f6dbbdf9bbc9805353ab04a5d86ba. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1354cb9-3f4a-400a-b2c0-521190cfdebb.json and https://artists.proofprofile.net/proofs/artist/c1354cb9-3f4a-400a-b2c0-521190cfdebb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T09:50:11Z
album: A01
  type: MusicAlbum
  date published: 2024-11-23
album: A01
  type: MusicAlbum
  date published: 2024-11-23
  track: しましま
    type: MusicRecording
    duration: PT2M1S
    duration ms: 121006
    explicit: false
    by artist: OLDUCT
    in album: A01
      type: MusicAlbum
      date published: 2024-11-23
    genre: vocaloid
    isrc code: TCJPD2538221
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T20:13:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc153ba9b30b19b1db5828732eb37957c16c2ae9cadab58c64a82841533a6b3ca
    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/TCJPD2538221
    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 0xc153ba9b30b19b1db5828732eb37957c16c2ae9cadab58c64a82841533a6b3ca. 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/TCJPD2538221.
      date published: 2026-07-05T01:12:41Z
    audio: しましま
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 143.985
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.641
      additional property: Energy
        type: PropertyValue
        value: 0.899
      additional property: Speechiness
        type: PropertyValue
        value: 0.106
      additional property: Acousticness
        type: PropertyValue
        value: 0.502
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.127
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.688
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.191
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: ダップル
    type: MusicRecording
    duration: PT2M1S
    duration ms: 121347
    explicit: false
    by artist: OLDUCT
    in album: A01
      type: MusicAlbum
      date published: 2024-11-23
    genre: vocaloid
    isrc code: TCJPD2538238
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T15:36:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x800db4b795d1135a44aedbe873ac2c4f75b25f616f99fa1a1653540ff70ea946
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958905
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958905
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPD2538238
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T16:14:34Z
    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 0x800db4b795d1135a44aedbe873ac2c4f75b25f616f99fa1a1653540ff70ea946. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/TCJPD2538238.
      date published: 2026-07-20T16:14:34Z
    audio: ダップル
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 153.946
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.664
      additional property: Energy
        type: PropertyValue
        value: 0.831
      additional property: Speechiness
        type: PropertyValue
        value: 0.071
      additional property: Acousticness
        type: PropertyValue
        value: 0.184
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.363
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.742
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: ダップル - d.j.ァネイロ Remix
album: 凹凸
album: Uneven
album: Guruguru
album: ぐるぐる

Loudness (dB)
type: PropertyValue
value: -3.931

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Minor

ダップル - d.j.ァネイロ Remix
type: MusicRecording
duration: PT2M17S
duration ms: 137314
explicit: false
by artist: OLDUCT
in album: A01
  type: MusicAlbum
  date published: 2024-11-23
genre: vocaloid
isrc code: TCJPD2538297
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-20T01:24:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4ec2ea436ac6a3aeffe7b9fc6c848437075efb2393c2647103f21f6797970656
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958805
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958805
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPD2538297
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-20T02:22:58Z
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 0x4ec2ea436ac6a3aeffe7b9fc6c848437075efb2393c2647103f21f6797970656. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCJPD2538297.
  date published: 2026-07-20T02:22:58Z
audio: ダップル - d.j.ァネイロ Remix
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 151.983
  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: 0.62
  additional property: Energy
    type: PropertyValue
    value: 0.819
  additional property: Speechiness
    type: PropertyValue
    value: 0.244
  additional property: Acousticness
    type: PropertyValue
    value: 0.001
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.115
  additional property: Liveness
    type: PropertyValue
    value: 0.213
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.576
  additional property: Loudness (dB)
    type: PropertyValue
    value: -3.832
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

凹凸
type: MusicAlbum
date published: 2024-12-28

Uneven
type: MusicAlbum
date published: 2024-12-28
track: Uneven
  type: MusicRecording
  duration: PT2M40S
  duration ms: 160165
  explicit: false
  by artist: OLDUCT
  in album: Uneven
    type: MusicAlbum
    date published: 2024-12-28
  genre: vocaloid
  isrc code: TCJPD2428110
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T22:57:38+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x18cce9bc47b50ee38d1717c98bfc0f1a834d4e35da75c850e7d1e952510e6d33
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958340
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958340
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPD2428110
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T00:53:26Z
  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 0x18cce9bc47b50ee38d1717c98bfc0f1a834d4e35da75c850e7d1e952510e6d33. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCJPD2428110.
    date published: 2026-07-17T00:53:26Z
  audio: Uneven
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 174.046
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.572
    additional property: Energy
      type: PropertyValue
      value: 0.89
    additional property: Speechiness
      type: PropertyValue
      value: 0.143
    additional property: Acousticness
      type: PropertyValue
      value: 0.187
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.442
    additional property: Liveness
      type: PropertyValue
      value: 0.139
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.772
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.521
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Guruguru
type: MusicAlbum
date published: 2025-09-06

ぐるぐる
type: MusicAlbum
date published: 2025-09-06