Nanako Sugiura
type: MusicGroup
popularity: 8
followers: 22
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29304909748f101d1b140c38826918530bdff0c2d61abedce8d1c08868d6941a. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89b23a53-2cb5-4def-84a3-38e5fd2ef784.json and https://artists.proofprofile.net/proofs/artist/89b23a53-2cb5-4def-84a3-38e5fd2ef784.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
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album: Vacation Days - From French Baroque to Sevrac and Tailleferre
  type: MusicAlbum
  date published: 2021-11-01
album: Vacation Days - From French Baroque to Sevrac and Tailleferre
  type: MusicAlbum
  date published: 2021-11-01
album: J.S. Bach & S.L. Weiss: Transcriptions for keyboard of lute works
  type: MusicAlbum
  date published: 2022-03-31
album: Russian Piano Music for Children, Vol. 2
  type: MusicAlbum
  date published: 2023-07-07
album: Russian Piano Music for Children, Vol. 2
  type: MusicAlbum
  date published: 2023-07-07
album: Russian Piano Music for Children Vol. 1(Tchaikovsky: Album for the Young, Op. 39/Prokofiev: Music for Children, Op. 65/Shostakovich: 7 Dolls' Dances)
  type: MusicAlbum
  date published: 2023-07-07
album: Russian Piano Music for Children, Vol. 1
  type: MusicAlbum
  date published: 2023-07-07
album: Histoires
  type: MusicAlbum
  date published: 2024-01-05
album: Hello! From the Northlands: Piano Pieces for Children from the North
  type: MusicAlbum
  date published: 2024-03-15
album: French Piano Music for Children, Vol. 1
  type: MusicAlbum
  date published: 2024-04-05
album: Piano Historica, Vols. 1 & 2
  type: MusicAlbum
  date published: 2024-06-07
  track: Serse, HWV 40: Ombra mai fu "Largo" (Arr. for Piano by Genta Takaku)
  track: Minuet in A Minor
album: Le danze del Re David
  type: MusicAlbum
  date published: 2024-06-21
album: Memories of Tokuyama Village
  type: MusicAlbum
  date published: 2024-09-20
album: La candeur Op.100-1
  type: MusicAlbum
  date published: 2024-12-14
album: American Piano Album for Children
  type: MusicAlbum
  date published: 2025-09-05
album: Hiroshi Hara & Kazuko Hara: A Selection of Piano & Guitar Pieces
  type: MusicAlbum
  date published: 2025-11-07

Serse, HWV 40: Ombra mai fu "Largo" (Arr. for Piano by Genta Takaku)
type: MusicRecording
duration: PT2M45S
duration ms: 165723
explicit: false
by artist: Nanako Sugiura
in album: Piano Historica, Vols. 1 & 2
  type: MusicAlbum
  date published: 2024-06-07
isrc code: JPP592354171
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additional property: CopyrightStatus
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602ff46fcdf3d2d266398a19b19c616ca33528b49ae7ef7e41fe0cd9f771d47a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPP592354171.
  date published: 2026-07-08T03:20:19Z
audio: Serse, HWV 40: Ombra mai fu "Largo" (Arr. for Piano by Genta Takaku)
  type: AudioObject
  additional property: Tempo (BPM)
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Minuet in A Minor
type: MusicRecording
duration: PT1M26S
duration ms: 86814
explicit: false
by artist: Nanako Sugiura
in album: Piano Historica, Vols. 1 & 2
  type: MusicAlbum
  date published: 2024-06-07
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d9e9eac849d45e13c9449ddcba10e014e0aa80720da131ec08a594825afa50. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/JPP592354126.
  date published: 2026-07-30T18:46:00Z
audio: Minuet in A Minor
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  additional property: Valence (Positivity)
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    value: A
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isrc code: JPP592354126
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: BitcoinTime
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP592354126
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/960294
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T18:46:00+00:00
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