秋山涼子
type: MusicGroup
genre: enka
genre: kayokyoku
popularity: 5
followers: 447
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x62cef48d648520a966611579a9f06e6060e2f0edeffcec494591582793881f65
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a1af4960-cc80-49d9-ba72-66c776539f65.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a1af4960-cc80-49d9-ba72-66c776539f65.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a1af4960-cc80-49d9-ba72-66c776539f65
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x62cef48d648520a966611579a9f06e6060e2f0edeffcec494591582793881f65","name":"秋山涼子","registered_at":"2026-06-20T05:39:03Z","symbol":"NIM1532252","token_address":"0x040255c60cd0dbc28295b7eafa8f2af4b6c582f4","type":"artist","uuid":"a1af4960-cc80-49d9-ba72-66c776539f65"}
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 0x62cef48d648520a966611579a9f06e6060e2f0edeffcec494591582793881f65. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1af4960-cc80-49d9-ba72-66c776539f65.json and https://artists.proofprofile.net/proofs/artist/a1af4960-cc80-49d9-ba72-66c776539f65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0x62cef48d648520a966611579a9f06e6060e2f0edeffcec494591582793881f65","name":"秋山涼子","registered_at":"2026-06-20T05:39:03Z","symbol":"NIM1532252","token_address":"0x040255c60cd0dbc28295b7eafa8f2af4b6c582f4","type":"artist","uuid":"a1af4960-cc80-49d9-ba72-66c776539f65"}
album: 酒場恋
  type: MusicAlbum
  date published: 2012-12-12
album: 口紅未練
  type: MusicAlbum
  date published: 2016-09-21
album: 命ささげます
  type: MusicAlbum
  date published: 2018-09-19
album: 海峡なみだ雪
  type: MusicAlbum
  date published: 2019-09-18
album: 終着…雪の根室線
  type: MusicAlbum
  date published: 2020-11-18
  track: 終着…雪の根室線
    type: MusicRecording
    duration: PT4M6S
    duration ms: 246066
    explicit: false
    by artist: 秋山涼子
    in album: 終着…雪の根室線
      type: MusicAlbum
      date published: 2020-11-18
    genre: enka
    genre: kayokyoku
    isrc code: JPTE02006740
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T04:19:05+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3941c894a0849e53fbd61f17e7d9aea09002cd1c8c9033dc2505372dcb5b93cc
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956889
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956889
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPTE02006740
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T06:56:49Z
    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 0x3941c894a0849e53fbd61f17e7d9aea09002cd1c8c9033dc2505372dcb5b93cc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPTE02006740.
      date published: 2026-07-06T06:56:49Z
    audio: 終着…雪の根室線
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 77.361
      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: 0.442
      additional property: Energy
        type: PropertyValue
        value: 0.612
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.593
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.213
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.523
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.538
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 襟裳風岬
  type: MusicAlbum
  date published: 2022-05-18
album: 春待つ女
  type: MusicAlbum
  date published: 2023-11-01
album: サロマの湖
  type: MusicAlbum
  date published: 2024-11-20
  track: サロマの湖
    type: MusicRecording
    duration: PT5M1S
    duration ms: 301546
    explicit: false
    by artist: 秋山涼子
    in album: サロマの湖
      type: MusicAlbum
      date published: 2024-11-20
    genre: enka
    genre: kayokyoku
    isrc code: JPTE02405330
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T22:10:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2645bf6b90767872980f2e6ad8bcac7f82ce0dd9f0c04b67255abb5932cddf62
    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/JPTE02405330
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2645bf6b90767872980f2e6ad8bcac7f82ce0dd9f0c04b67255abb5932cddf62. 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/JPTE02405330.
      date published: 2026-07-18T04:13:26Z
    audio: サロマの湖
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 79.99
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Time Signature
type: PropertyValue
value: 3

Danceability
type: PropertyValue
value: 0.477

Energy
type: PropertyValue
value: 0.574

Speechiness
type: PropertyValue
value: 0.03

Acousticness
type: PropertyValue
value: 0.601

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.121

Valence (Positivity)
type: PropertyValue
value: 0.355

Loudness (dB)
type: PropertyValue
value: -6

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Minor