Kei Koito
type: MusicGroup
genre: medieval
popularity: 17
followers: 786
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additional property: CopyrightChainExplorerURL
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additional property: OTSVerifyInstructions
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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 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 0x543e9262854038d2c0eb3d9b81b29acdbe7498c4222d7e6f1e66cb6cdb0572ba. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3d6aeec-2641-49ec-add1-9c613fa7fe46.json and https://artists.proofprofile.net/proofs/artist/e3d6aeec-2641-49ec-add1-9c613fa7fe46.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T15:41:00Z
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album: The Trio
  type: MusicAlbum
  date published: 2007-01-01
album: Buxtehude, Radeck, Strunck, Scheidemann, H & J. Praetorius, Weckmann, Tunder & J. S. Bach: Works for Organ
  type: MusicAlbum
  date published: 2007-12-01
album: Organ Music Before Bach - Works by Pachelbel, Froberger, Muffat, a.o.
  type: MusicAlbum
  date published: 2014-09-29
  track: Ciacona in D Minor
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    by artist: Kei Koito
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      type: MusicAlbum
      date published: 2014-09-29
    genre: medieval
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    additional property: OTSVerificationAPI
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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 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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe2d2cc2886d6e91ce17cb5b845b014c549599e566a16f908cdf9538f3034c6. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/CH0011400263 — a six-check JSON result.
      date published: 2026-07-31T05:23:41Z
    audio: Ciacona in D Minor
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      additional property: Key Name
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        value: C#
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  track: Ciacona in G Minor (ex F Minor)
    type: MusicRecording
    duration: PT9M27S
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    by artist: Kei Koito
    in album: Organ Music Before Bach - Works by Pachelbel, Froberger, Muffat, a.o.
      type: MusicAlbum
      date published: 2014-09-29
    genre: medieval
    isrc code: CH0011400270
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    additional property: OTSVerificationAPI
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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 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
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      date published: 2026-07-08T03:22:41Z
    audio: Ciacona in G Minor (ex F Minor)
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album: Baroque Organ Concertos
album: Splendour - Organ Music & Vocal Works by Buxtehude, Hassler, Praetorius & Scheidemann

Liveness
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Valence (Positivity)
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Loudness (dB)
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value: -28.175

Key Name
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value: G

Mode Name
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value: Minor

Baroque Organ Concertos
type: MusicAlbum
date published: 2016-03-18

Splendour - Organ Music & Vocal Works by Buxtehude, Hassler, Praetorius & Scheidemann
type: MusicAlbum
date published: 2017-06-23
track: Alleluja, laudem dicite Deo nostro (Motet)
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  by artist: Kei Koito
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    type: MusicAlbum
    date published: 2017-06-23
  genre: medieval
  isrc code: CH0011700070
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  additional property: OTSVerifyInstructions
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    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 0xe56b427178d43022cd824cde1e4e0114975470419144d20957c448724aafb1e6. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CH0011700070 — a six-check JSON result.
    date published: 2026-08-01T01:44:32Z
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