Chiyo Okumura
type: MusicGroup
genre: enka
genre: kayokyoku
description: is a popular Japanese pop singer and former fashion model who made her debut in the 1960s. She is best known for her songs "Koi no Dorei" (恋の奴隷 English: "Slave of Love") and "Shuuchakueki" (終着駅 Engl
popularity: 32
followers: 12393
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2463e85cbf468fc62048327d2570c76cdb4b8e6bd7c77a5fdb8ccec0d22a13. 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/028b44b2-a5a7-45c0-914a-9256d777379d.json and https://artists.proofprofile.net/proofs/artist/028b44b2-a5a7-45c0-914a-9256d777379d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
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album: ナイト・クラブの奥村チヨ (ナイトクラブの奥村チヨ)
  type: MusicAlbum
  date published: 1970
album: ＣＨＩＹＯ！コケティッシュボム
  type: MusicAlbum
  date published: 1973
  track: エメラルドの伝説
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    by artist: Chiyo Okumura
    in album: ＣＨＩＹＯ！コケティッシュボム
      type: MusicAlbum
      date published: 1973
    genre: enka
    genre: kayokyoku
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    additional property: OTSTimestamp
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    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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd4634da199b5d835e99b931ae8a48f42f892c78f2f0a80b61cb6e06cc2a355. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPTO09401420.
      date published: 2026-07-17T23:18:11Z
    audio: エメラルドの伝説
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
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      additional property: Musical Key
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      additional property: Mode (Major/Minor)
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      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Instrumentalness
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      additional property: Liveness
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        value: 0.174
      additional property: Valence (Positivity)
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        value: 0.103
      additional property: Loudness (dB)
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        value: -7.327
      additional property: Key Name
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        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Be With You-あなたに逢えた-/慕麗路
  type: MusicAlbum
  date published: 2016-11-01