みいるか
type: MusicGroup
popularity: 7
followers: 4699
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4c97771629b49d4ba99ddcecc0c20713899a6fff4045cdb5a203d65e295b2b3d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a63fae6b-0abc-4491-a9c9-53e8c5ef015c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a63fae6b-0abc-4491-a9c9-53e8c5ef015c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a63fae6b-0abc-4491-a9c9-53e8c5ef015c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4c97771629b49d4ba99ddcecc0c20713899a6fff4045cdb5a203d65e295b2b3d","name":"みいるか","registered_at":"2026-06-20T07:42:28Z","symbol":"NIM1556355","token_address":"0x3f5ac91ab4e5a3208d2336335a49d4c0dc2a597a","type":"artist","uuid":"a63fae6b-0abc-4491-a9c9-53e8c5ef015c"}
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 0x4c97771629b49d4ba99ddcecc0c20713899a6fff4045cdb5a203d65e295b2b3d. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a63fae6b-0abc-4491-a9c9-53e8c5ef015c.json and https://artists.proofprofile.net/proofs/artist/a63fae6b-0abc-4491-a9c9-53e8c5ef015c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x4c97771629b49d4ba99ddcecc0c20713899a6fff4045cdb5a203d65e295b2b3d","name":"みいるか","registered_at":"2026-06-20T07:42:28Z","symbol":"NIM1556355","token_address":"0x3f5ac91ab4e5a3208d2336335a49d4c0dc2a597a","type":"artist","uuid":"a63fae6b-0abc-4491-a9c9-53e8c5ef015c"}
album: イルカのおさんぽ
  type: MusicAlbum
  date published: 2023-02-27
  track: イルカのおさんぽ
    type: MusicRecording
    duration: PT1M6S
    duration ms: 66506
    explicit: false
    by artist: みいるか
    in album: イルカのおさんぽ
      type: MusicAlbum
      date published: 2023-02-27
    isrc code: JP92N2310791
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T20:52:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc56348136deb9f7f4d3fb4825b904204add08afbfadc46424780c1969fe0c740
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2310791
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0xc56348136deb9f7f4d3fb4825b904204add08afbfadc46424780c1969fe0c740. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JP92N2310791.
      date published: 2026-07-04T10:04:33Z
    audio: イルカのおさんぽ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 83.034
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.713
      additional property: Energy
        type: PropertyValue
        value: 0.707
      additional property: Speechiness
        type: PropertyValue
        value: 0.382
      additional property: Acousticness
        type: PropertyValue
        value: 0.079
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.003
      additional property: Liveness
        type: PropertyValue
        value: 0.143
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.688
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.14
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: にんぎょのあくび
  type: MusicAlbum
  date published: 2023-02-27
  track: にんぎょのあくび
    type: MusicRecording
    duration: PT1M23S
    duration ms: 83877
    explicit: false
    by artist: みいるか
    in album: にんぎょのあくび
      type: MusicAlbum
      date published: 2023-02-27
    isrc code: JP92N2310792
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T07:19:07+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0d12f4cde214b1d3ca26f8b1a2b816f0bdbf5dc8217384cb01b46c5bb69d02a7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2310792
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x0d12f4cde214b1d3ca26f8b1a2b816f0bdbf5dc8217384cb01b46c5bb69d02a7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JP92N2310792.
      date published: 2026-07-04T10:04:33Z
    audio: にんぎょのあくび
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 97.988
      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: 0.603
      additional property: Energy
        type: PropertyValue
        value: 0.322
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.828
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.931
      additional property: Liveness
        type: PropertyValue
        value: 0.284
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.824
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: ゆるいるかマーチ

Loudness (dB)
type: PropertyValue
value: -10.523

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

ゆるいるかマーチ
type: MusicAlbum
date published: 2023-09-19
track: ゆるいるかマーチ
  type: MusicRecording
  duration: PT1M23S
  duration ms: 83671
  explicit: false
  by artist: みいるか
  in album: ゆるいるかマーチ
    type: MusicAlbum
    date published: 2023-09-19
  isrc code: JP92N2364524
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-18T03:55:41+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2023db26dc831050ee1f1b3752af3694cf296f68719da2bc9a0f4178e1cf2a02
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958489
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958489
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2364524
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-18T04:13:26Z
  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 0x2023db26dc831050ee1f1b3752af3694cf296f68719da2bc9a0f4178e1cf2a02. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JP92N2364524.
    date published: 2026-07-18T04:13:26Z
  audio: ゆるいるかマーチ
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 127.981
    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: 0.65
    additional property: Energy
      type: PropertyValue
      value: 0.792
    additional property: Speechiness
      type: PropertyValue
      value: 0.027
    additional property: Acousticness
      type: PropertyValue
      value: 0.418
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.203
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.837
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.615
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major