加藤有紀
type: MusicGroup
genre: city pop
popularity: 25
followers: 2900
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaaafedb1bc372a6d0bc2cdfa45177c09a37bb004d8d97a55056fca9a5f685db5
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/37bbfb76-e5ee-4200-be31-c0d70b02b78c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/37bbfb76-e5ee-4200-be31-c0d70b02b78c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/37bbfb76-e5ee-4200-be31-c0d70b02b78c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaaafedb1bc372a6d0bc2cdfa45177c09a37bb004d8d97a55056fca9a5f685db5","name":"加藤有紀","registered_at":"2026-06-11T16:48:28Z","symbol":"NIM0072516","token_address":"0xa67276512b7d84bb69ae77c75fd70504e10b0fc2","type":"artist","uuid":"37bbfb76-e5ee-4200-be31-c0d70b02b78c"}
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 0xaaafedb1bc372a6d0bc2cdfa45177c09a37bb004d8d97a55056fca9a5f685db5. 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/37bbfb76-e5ee-4200-be31-c0d70b02b78c.json and https://artists.proofprofile.net/proofs/artist/37bbfb76-e5ee-4200-be31-c0d70b02b78c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0xaaafedb1bc372a6d0bc2cdfa45177c09a37bb004d8d97a55056fca9a5f685db5","name":"加藤有紀","registered_at":"2026-06-11T16:48:28Z","symbol":"NIM0072516","token_address":"0xa67276512b7d84bb69ae77c75fd70504e10b0fc2","type":"artist","uuid":"37bbfb76-e5ee-4200-be31-c0d70b02b78c"}
album: 謎はと・か・な・い・で シングル・コレクション
  type: MusicAlbum
  date published: 2018-06-06
  track: BLACK JACK
    type: MusicRecording
    duration: PT3M50S
    duration ms: 230000
    explicit: false
    by artist: 加藤有紀
    in album: 謎はと・か・な・い・で シングル・コレクション
      type: MusicAlbum
      date published: 2018-06-06
    genre: city pop
    isrc code: JPS801834562
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T22:37:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdec02fc12eb092936fcc0732a0635f6282b7d378fc1e0117ab547bae5f9d6af6
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801834562
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec02fc12eb092936fcc0732a0635f6282b7d378fc1e0117ab547bae5f9d6af6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801834562.
      date published: 2026-07-04T11:19:20Z
    audio: BLACK JACK
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.978
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.847
      additional property: Energy
        type: PropertyValue
        value: 0.634
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.119
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.112
      additional property: Liveness
        type: PropertyValue
        value: 0.055
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.663
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.335
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: 誤解
    type: MusicRecording
    duration: PT3M59S
    duration ms: 239346
    explicit: false
    by artist: 加藤有紀
    in album: 謎はと・か・な・い・で シングル・コレクション
      type: MusicAlbum
      date published: 2018-06-06
    genre: city pop
    isrc code: JPS801834565
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T13:35:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4de23abb89aef51eb9ddd73bd71abb5f14cbb5c77c03d76f55f02f8aa1edd28c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957711
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957711
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801834565
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T13:56:57Z
    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 0x4de23abb89aef51eb9ddd73bd71abb5f14cbb5c77c03d76f55f02f8aa1edd28c. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/JPS801834565.
      date published: 2026-07-12T13:56:57Z
    audio: 誤解
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 110.433
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.816
      additional property: Energy
        type: PropertyValue
        value: 0.443
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.319
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.032
      additional property: Liveness
        type: PropertyValue
        value: 0.088
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.54
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: コンプリート・コレクション 謎はと・か・な・い・で

Loudness (dB)
type: PropertyValue
value: -11.606

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Minor

コンプリート・コレクション 謎はと・か・な・い・で
type: MusicAlbum
date published: 2019-01-23
track: 謎はと・か・な・い・で
  type: MusicRecording
  duration: PT3M17S
  duration ms: 197013
  explicit: false
  by artist: 加藤有紀
  in album: コンプリート・コレクション 謎はと・か・な・い・で
    type: MusicAlbum
    date published: 2019-01-23
  genre: city pop
  isrc code: JPS801834564
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-13T09:44:03+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x460453574c2379769b1ad065e1a17c63ade67d5d002cf431a6cf075f46fd1e2b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957852
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957852
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801834564
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-13T11:25:45Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460453574c2379769b1ad065e1a17c63ade67d5d002cf431a6cf075f46fd1e2b. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801834564.
    date published: 2026-07-13T11:25:45Z
  audio: 謎はと・か・な・い・で
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 137.821
    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: 0.708
    additional property: Energy
      type: PropertyValue
      value: 0.916
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.498
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.454
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.94
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.247
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Shyに愛して
  type: MusicRecording
  duration: PT5M3S
  duration ms: 303253
  explicit: false
  by artist: 加藤有紀
  in album: コンプリート・コレクション 謎はと・か・な・い・で
    type: MusicAlbum
    date published: 2019-01-23
  genre: city pop
  isrc code: JPS801840166
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T12:05:26+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf5b93d552b5a2209ebbe8d69b42564d64f862c8fc914f9e05476f70a84ac4cdb
  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/JPS801840166
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b93d552b5a2209ebbe8d69b42564d64f862c8fc914f9e05476f70a84ac4cdb. 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/JPS801840166.
    date published: 2026-07-05T19:27:56Z
  audio: Shyに愛して
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 108.692
    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: 0.797
    additional property: Energy
      type: PropertyValue
      value: 0.669
    additional property: Speechiness
      type: PropertyValue
      value: 0.114
    additional property: Acousticness
      type: PropertyValue
      value: 0.207
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.002
    additional property: Liveness
      type: PropertyValue
      value: 0.243
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.723
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.572
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Cafe Noirでひといき
  type: MusicRecording
  duration: PT4M30S
  duration ms: 270653
  explicit: false
  by artist: 加藤有紀
  in album: コンプリート・コレクション 謎はと・か・な・い・で
    type: MusicAlbum
    date published: 2019-01-23
  genre: city pop
  isrc code: JPS801840167
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T14:11:46+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa787b66d04ae843291d93b233da93dccb1ecb79997dbba18ba3508903ad7e05c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958166
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958166
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Cafe Noirでひといき

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801840167

OTSTimestamp
type: PropertyValue
value: 2026-07-15T15:55:19Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa787b66d04ae843291d93b233da93dccb1ecb79997dbba18ba3508903ad7e05c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/JPS801840167.
date published: 2026-07-15T15:55:19Z

Cafe Noirでひといき
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 138.038
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: 0.638
additional property: Energy
  type: PropertyValue
  value: 0.54
additional property: Speechiness
  type: PropertyValue
  value: 0.027
additional property: Acousticness
  type: PropertyValue
  value: 0.673
additional property: Instrumentalness
  type: PropertyValue
  value: 0.038
additional property: Liveness
  type: PropertyValue
  value: 0.112
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.365
additional property: Loudness (dB)
  type: PropertyValue
  value: -7.559
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Major