Ryuichi Sakamoto
type: MusicGroup
description: was a Japanese musician, composer, keyboardist, record producer, singer and actor. He pursued a diverse range of styles as a solo artist and as a member of the synth-based band Yellow Magic Orchestra
popularity: 8
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x63429f191ebaf7a18912646010b866cdf44030353b7d15ae922c898a063867e4
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/fdc5f056-7240-4269-b90d-60cabb16a5ea.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/fdc5f056-7240-4269-b90d-60cabb16a5ea.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fdc5f056-7240-4269-b90d-60cabb16a5ea
additional property: OTSTimestamp
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  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63429f191ebaf7a18912646010b866cdf44030353b7d15ae922c898a063867e4. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdc5f056-7240-4269-b90d-60cabb16a5ea.json and https://artists.proofprofile.net/proofs/artist/fdc5f056-7240-4269-b90d-60cabb16a5ea.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0x63429f191ebaf7a18912646010b866cdf44030353b7d15ae922c898a063867e4","name":"Ryuichi Sakamoto","registered_at":"2026-06-21T17:59:09Z","symbol":"NIM1992812","token_address":"0xfa2dde3fd12d8b8afd05a552292ee1300d5547ea","type":"artist","uuid":"fdc5f056-7240-4269-b90d-60cabb16a5ea"}
album: III (2025 Remaster)
  type: MusicAlbum
  date published: 2025-05-30
  track: Energy Flow - 2025 Remaster
    type: MusicRecording
    duration: PT5M14S
    duration ms: 314660
    explicit: false
    by artist: Ryuichi Sakamoto
    in album: III (2025 Remaster)
      type: MusicAlbum
      date published: 2025-05-30
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    additional property: CopyrightStatus
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T00:52:48Z
    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 0xa3c6918c921dcae7b1215da32116e24683c1e3006091b91d2b419236fd7bfce3. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCHR1330804 — a six-check JSON result.
      date published: 2026-07-13T00:52:48Z
    audio: Energy Flow - 2025 Remaster
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      additional property: Tempo (BPM)
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      additional property: Musical Key
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
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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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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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        value: -27.71
      additional property: Key Name
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        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: The Last Emperor - 2025 Remaster
    type: MusicRecording
    duration: PT4M48S
    duration ms: 288963
    explicit: false
    by artist: Ryuichi Sakamoto
    in album: III (2025 Remaster)
      type: MusicAlbum
      date published: 2025-05-30
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    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T21:55:37Z
    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 0xb2da27abf6d6dc3e1435ed864a2cc40d782ecedb4314be6f6993e41ea14d3b48. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7282577010 — a six-check JSON result.
      date published: 2026-07-16T21:55:37Z
    audio: The Last Emperor - 2025 Remaster
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        value: 84.436
      additional property: Musical Key
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        value: 4
      additional property: Mode (Major/Minor)
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        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
        type: PropertyValue
        value: 0.162
      additional property: Acousticness
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        value: 0.963
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.854
      additional property: Liveness
        type: PropertyValue
        value: 0.09
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.115
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Loudness (dB)
type: PropertyValue
value: -19.723

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor