KK
type: MusicGroup
description: KK, K.K., kK, k.k., or other sequences of two k's with or without punctuation may refer to: Arts and media KK, the production code for the 1967 Doctor Who serial The Faceless Ones "KK" (song), a 201
popularity: 36
followers: 6459
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x1961a933aca9e92efb1df8755c8019d43d9330b29418471fb38eed48087dec08
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4e2ae21f-8b9e-4896-8e1e-c049c0d0d657.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4e2ae21f-8b9e-4896-8e1e-c049c0d0d657.json
additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
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 0x1961a933aca9e92efb1df8755c8019d43d9330b29418471fb38eed48087dec08. 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/4e2ae21f-8b9e-4896-8e1e-c049c0d0d657.json and https://artists.proofprofile.net/proofs/artist/4e2ae21f-8b9e-4896-8e1e-c049c0d0d657.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
album: なんでしょう？
  type: MusicAlbum
  date published: 2013-10-25
album: なんでしょう？
  type: MusicAlbum
  date published: 2016-06-04
album: Nandesho?
  type: MusicAlbum
  date published: 2016-06-04
  track: Nandesho?
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    duration: PT5M5S
    duration ms: 305840
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      type: MusicAlbum
      date published: 2016-06-04
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    additional property: CopyrightStatus
      type: PropertyValue
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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 0x54cfe22d498c98c3e9b372143dbe661a070e324fb9425357dca323cd4487b1b7. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCJPE1618363.
      date published: 2026-07-16T00:00:34Z
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album: from Japan with Nostalgia
  type: MusicAlbum
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album: 落ち葉から、ひとひらの雪に
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  date published: 2016-10-31
album: 落ち葉から、ひとひらの雪に
  type: MusicAlbum
  date published: 2016-11-01
album: 全てを創造する者「Dominus Deus」
  type: MusicAlbum
  date published: 2016-12-17
album: 全てを創造する者 -Dominus Deus-
  type: MusicAlbum
  date published: 2020-05-23
album: The One who creates everything -Dominus Deus-
  type: MusicAlbum
  date published: 2020-05-23
album: incoherent
  type: MusicAlbum
  date published: 2022-03-18
album: Planet Cerulean
  type: MusicAlbum
  date published: 2022-03-18
album: Galaxy Restaurant and Cat
  type: MusicAlbum
  date published: 2022-03-18
album: Continue
  type: MusicAlbum
  date published: 2022-03-18
album: 渺茫たる砂平線
  type: MusicAlbum
  date published: 2022-03-18
album: 銀河食堂と猫
  type: MusicAlbum
  date published: 2022-03-18
album: eye-catch
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  date published: 2022-03-18
album: 入り江を望む青き聖域
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  date published: 2022-03-18
album: Wonder
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  date published: 2022-03-18
album: suspense cinema piano
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  date published: 2022-03-18
album: Warmth of My Home
  type: MusicAlbum
  date published: 2022-03-18
album: The Blue Danube (short.ver)
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  date published: 2022-03-18
album: Something Operation
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  date published: 2022-03-18
album: horror horror
  type: MusicAlbum
  date published: 2022-03-18
album: Jekyll and Hyde
  type: MusicAlbum
  date published: 2022-03-18
album: Eating at Downtown Food Stalls
  type: MusicAlbum
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album: Dominus Deus_3
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  date published: 2022-03-18
album: 日曜の午後
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  date published: 2022-03-18
  track: 日曜の午後
album: 時間、色彩および空間のコンポジション
album: 全てを創造する者「Dominus Deus」_2
album: Under a Starry Sky
album: Spane
album: Shopping District with Too Many Orders
album: Orange
album: One Holiday Morning in Summer (jingle.ver)
album: Etude in C major, Op.67
album: Darkscene
album: 不安、恐怖、戦慄
album: Cminor
album: とある王国の飲料店
album: Park, Sun Through the Trees, Mountain Climbing.
album: I Want to Travel to a World Like When I Was a Boy
album: 7melodies
album: オルゴールと弦楽のための小曲
album: 他愛のない話
album: 天体セルリアン
album: Island with White Lighthouse
album: Do Cats Dream of Galaxies?
album: Boundless Sand Plain
album: Atmosphere
album: 違和感
album: The Past
album: silence dance
album: party day
album: contact
album: classical moments
album: Short Intermediate Color
album: Oh?
album: Magic Halloween and Bizet
album: Dream of Electric Sheep
album: Boy on a Bike!
album: Blue Sanctuary Overlooking the Cove
album: At Home
album: Yunagi
album: Summer Melody

日曜の午後
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5405441be9f9c6f782c522b530ecc2641a41e469eb9f9045d2fa492118a19909. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/TCJPR2243276.
  date published: 2026-07-19T21:20:45Z
audio: 日曜の午後
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時間、色彩および空間のコンポジション
type: MusicAlbum
date published: 2022-03-18

全てを創造する者「Dominus Deus」_2
type: MusicAlbum
date published: 2022-03-18

Under a Starry Sky
type: MusicAlbum
date published: 2022-03-18

Spane
type: MusicAlbum
date published: 2022-03-18

Shopping District with Too Many Orders
type: MusicAlbum
date published: 2022-03-18

Orange
type: MusicAlbum
date published: 2022-03-18

One Holiday Morning in Summer (jingle.ver)
type: MusicAlbum
date published: 2022-03-18

Etude in C major, Op.67
type: MusicAlbum
date published: 2022-03-18

Darkscene
type: MusicAlbum
date published: 2022-03-18

不安、恐怖、戦慄
type: MusicAlbum
date published: 2022-03-18

Cminor
type: MusicAlbum
date published: 2022-03-18

とある王国の飲料店
type: MusicAlbum
date published: 2022-03-18

Wonder
type: MusicAlbum
date published: 2022-03-18

Park, Sun Through the Trees, Mountain Climbing.
type: MusicAlbum
date published: 2022-03-18

I Want to Travel to a World Like When I Was a Boy
type: MusicAlbum
date published: 2022-03-18

7melodies
type: MusicAlbum
date published: 2022-03-18

オルゴールと弦楽のための小曲
type: MusicAlbum
date published: 2022-03-18
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  additional property: OTSBitcoinBlock
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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
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    date published: 2026-07-05T10:01:46Z
  audio: オルゴールと弦楽のための小曲
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他愛のない話
type: MusicAlbum
date published: 2022-03-18

天体セルリアン
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date published: 2022-03-18

Island with White Lighthouse
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date published: 2022-03-18

Do Cats Dream of Galaxies?
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date published: 2022-03-18

Boundless Sand Plain
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date published: 2022-03-18

Atmosphere
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date published: 2022-03-18

違和感
type: MusicAlbum
date published: 2022-03-18

The Past
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date published: 2022-03-18

silence dance
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date published: 2022-03-18

party day
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date published: 2022-03-18

contact
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date published: 2022-03-18

classical moments
type: MusicAlbum
date published: 2022-03-18

Short Intermediate Color
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date published: 2022-03-18

Oh?
type: MusicAlbum
date published: 2022-03-18

Magic Halloween and Bizet
type: MusicAlbum
date published: 2022-03-18

Dream of Electric Sheep
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date published: 2022-03-18

Boy on a Bike!
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date published: 2022-03-18

Blue Sanctuary Overlooking the Cove
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date published: 2022-03-18

At Home
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date published: 2022-03-18

Yunagi
type: MusicAlbum
date published: 2022-03-18

Summer Melody
type: MusicAlbum
date published: 2022-03-18

eye-catch
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date published: 2022-03-18

Noh Mask Artist
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date published: 2022-03-18

Judgment Day
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date published: 2022-03-18

Forgotten Temple
type: MusicAlbum
date published: 2022-03-18
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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 0x309645dc62ed9b9b5ad74268883c7cb9a04c9714f12f147b2d7e7bcbbd03371b. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/TCJPR2243252.
    date published: 2026-07-06T01:42:12Z
  audio: Forgotten Temple
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Dramatic Complex
type: MusicAlbum
date published: 2022-03-18

At the Planetarium
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date published: 2022-03-18

旅の景色
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date published: 2022-03-18

少年の頃のような世界へ旅立ってみたい
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date published: 2022-03-18

星が輝く冬
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date published: 2022-03-18
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  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T04:19:23+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x993d94f47d10e34780098a8ce9c1036dc85532f769513ab6a8c79e9cf20d3d3d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958238
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958238
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243309
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T04:30:31Z
  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 0x993d94f47d10e34780098a8ce9c1036dc85532f769513ab6a8c79e9cf20d3d3d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCJPR2243309.
    date published: 2026-07-16T04:30:31Z
  audio: 星が輝く冬
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 180.026
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.512
    additional property: Energy
      type: PropertyValue
      value: 0.075
    additional property: Speechiness
      type: PropertyValue
      value: 0.074
    additional property: Acousticness
      type: PropertyValue
      value: 0.99
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.873
    additional property: Liveness
      type: PropertyValue
      value: 0.149
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.893
    additional property: Loudness (dB)
      type: PropertyValue
      value: -22.051
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Mysterious Halloween
type: MusicAlbum
date published: 2022-03-18

ブリキの汽車に乗って (short ver.)
type: MusicAlbum
date published: 2022-03-18

Dramatic Complex
type: MusicAlbum
date published: 2022-03-18

bubble bubble
type: MusicAlbum
date published: 2022-03-18
track: bubble bubble
  type: MusicRecording
  duration: PT2M9S
  duration ms: 129750
  explicit: false
  by artist: KK
  in album: bubble bubble
    type: MusicAlbum
    date published: 2022-03-18
  isrc code: TCJPR2243303
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T07:07:51+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x895ea0a80b08102e7fc0233a15cee10d3fc53df6057931efa0bad3e930ba7a65
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956474
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956474
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243303
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T08:56:35Z
  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 0x895ea0a80b08102e7fc0233a15cee10d3fc53df6057931efa0bad3e930ba7a65. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPR2243303.
    date published: 2026-07-03T08:56:35Z
  audio: bubble bubble
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 129.983
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.773
    additional property: Energy
      type: PropertyValue
      value: 0.471
    additional property: Speechiness
      type: PropertyValue
      value: 0.067
    additional property: Acousticness
      type: PropertyValue
      value: 0.022
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.149
    additional property: Liveness
      type: PropertyValue
      value: 0.148
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.961
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.229
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Welcome to Utopia
type: MusicAlbum
date published: 2022-03-18

Sunday Afternoon
type: MusicAlbum
date published: 2022-03-18

massive damage
type: MusicAlbum
date published: 2022-03-18

Riding the Tin Train (short ver.)
type: MusicAlbum
date published: 2022-03-18

Night Sky and City Lights
type: MusicAlbum
date published: 2022-03-18

Exchange Diary
type: MusicAlbum
date published: 2022-03-18

Breakfast in the Rye
type: MusicAlbum
date published: 2022-03-18

昼下がり気分
type: MusicAlbum
date published: 2022-03-18
track: 昼下がり気分
  type: MusicRecording
  duration: PT3M55S
  duration ms: 235258
  explicit: false
  by artist: KK
  in album: 昼下がり気分
    type: MusicAlbum
    date published: 2022-03-18
  isrc code: TCJPR2243277
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T22:59:40+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf76fa57ee90b8e6b61913216bb73c79a70e7696ebf337fcc90c6d2a70180ad78
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956725
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956725
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243277
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T01:12:41Z
  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 0xf76fa57ee90b8e6b61913216bb73c79a70e7696ebf337fcc90c6d2a70180ad78. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243277.
    date published: 2026-07-05T01:12:41Z
  audio: 昼下がり気分
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 149.921
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.584
    additional property: Energy
      type: PropertyValue
      value: 0.156
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.776
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.208
    additional property: Liveness
      type: PropertyValue
      value: 0.131
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.625
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.115
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major

いつもの風景
type: MusicAlbum
date published: 2022-03-18

審判の日
type: MusicAlbum
date published: 2022-03-18
track: 審判の日
  type: MusicRecording
  duration: PT0M58S
  duration ms: 58070
  explicit: false
  by artist: KK
  in album: 審判の日
    type: MusicAlbum
    date published: 2022-03-18
  isrc code: TCJPR2243331
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T04:19:47+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x01bd1609f34594ee74c604a20e38e91659fd1198dc328866da22726146acf9fc
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956474
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956474
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243331
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T08:56:35Z
  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 0x01bd1609f34594ee74c604a20e38e91659fd1198dc328866da22726146acf9fc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPR2243331.
    date published: 2026-07-03T08:56:35Z
  audio: 審判の日
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 67.943
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.344
    additional property: Energy
      type: PropertyValue
      value: 0.399
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.798
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.319
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.347
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.459
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor

プラネタリウムにて
type: MusicAlbum
date published: 2022-03-18

answer
type: MusicAlbum
date published: 2022-03-18

Mad Chase!!
type: MusicAlbum
date published: 2022-03-18

bubble bubble
type: MusicAlbum
date published: 2022-03-18
track: bubble bubble
  type: MusicRecording
  duration: PT2M9S
  duration ms: 129750
  explicit: false
  by artist: KK
  in album: bubble bubble
    type: MusicAlbum
    date published: 2022-03-18
  isrc code: TCJPR2243303
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T07:07:51+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x895ea0a80b08102e7fc0233a15cee10d3fc53df6057931efa0bad3e930ba7a65
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956545
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956545
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243303
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T19:59:51Z
  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 0x895ea0a80b08102e7fc0233a15cee10d3fc53df6057931efa0bad3e930ba7a65. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPR2243303.
    date published: 2026-07-03T19:59:51Z
  audio: bubble bubble
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 129.983
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.773
    additional property: Energy
      type: PropertyValue
      value: 0.471
    additional property: Speechiness
      type: PropertyValue
      value: 0.067
    additional property: Acousticness
      type: PropertyValue
      value: 0.022
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.149
    additional property: Liveness
      type: PropertyValue
      value: 0.148
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.961
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.229
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Etude Op.92
type: MusicAlbum
date published: 2022-03-18

suspense piano
type: MusicAlbum
date published: 2022-03-18

Ginga-tei where Cat Live
type: MusicAlbum
date published: 2022-03-18

Etude Op.92
type: MusicAlbum
date published: 2022-03-18

Composition of Time, Color and Space
type: MusicAlbum
date published: 2022-03-18

Ancient World Map
type: MusicAlbum
date published: 2022-03-18

ひま曜日
type: MusicAlbum
date published: 2022-03-18
track: ひま曜日
  type: MusicRecording
  duration: PT3M39S
  duration ms: 219951
  explicit: false
  by artist: KK
  in album: ひま曜日
    type: MusicAlbum
    date published: 2022-03-18
  isrc code: TCJPR2243327
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T13:12:55+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdda1b8704c188f8f024af1cca721919fb050dbb0cd2923960cf470db2b55e942
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956545
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956545
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243327
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T19:59:51Z
  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 0xdda1b8704c188f8f024af1cca721919fb050dbb0cd2923960cf470db2b55e942. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPR2243327.
    date published: 2026-07-03T19:59:51Z
  audio: ひま曜日
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 81.987
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.651
    additional property: Energy
      type: PropertyValue
      value: 0.023
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.988
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.958
    additional property: Liveness
      type: PropertyValue
      value: 0.1
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.542
    additional property: Loudness (dB)
      type: PropertyValue
      value: -26.475
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major

全てを創造する者「Dominus Deus」_3
type: MusicAlbum
date published: 2022-03-18

party day
type: MusicAlbum
date published: 2022-03-18

接触
type: MusicAlbum
date published: 2022-03-18

Magic Halloween and Bizet
type: MusicAlbum
date published: 2022-03-18

Thunderstorm
type: MusicAlbum
date published: 2022-03-18

Mysterious
type: MusicAlbum
date published: 2022-03-18

Discordant
type: MusicAlbum
date published: 2022-03-18

おやおや?
type: MusicAlbum
date published: 2022-03-18
track: おやおや?
  type: MusicRecording
  duration: PT1M57S
  duration ms: 117890
  explicit: false
  by artist: KK
  in album: おやおや?
    type: MusicAlbum
    date published: 2022-03-18
  isrc code: TCJPR2243275
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T09:04:45+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x80271fa9def1ac5c20ab84e9aded7f5813e96175b82a6b03027f3ca9e95180f1
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243275
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T10:01:58Z
  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 0x80271fa9def1ac5c20ab84e9aded7f5813e96175b82a6b03027f3ca9e95180f1. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCJPR2243275.
    date published: 2026-07-22T10:01:58Z
  audio: おやおや?
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 219.83
    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.609
    additional property: Energy
      type: PropertyValue
      value: 0.11
    additional property: Speechiness
      type: PropertyValue
      value: 0.242
    additional property: Acousticness
      type: PropertyValue
      value: 0.792
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.932
    additional property: Liveness
      type: PropertyValue
      value: 0.09
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.617
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.998
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Minor

夏祭りの露店通り
type: MusicAlbum
date published: 2022-03-18

5億回目のクレッシェンド
type: MusicAlbum
date published: 2022-03-18

奇妙な古物商
type: MusicAlbum
date published: 2022-03-18

The Past
type: MusicAlbum
date published: 2022-03-18

shuffle shuffle
type: MusicAlbum
date published: 2022-03-18
track: shuffle shuffle
  type: MusicRecording
  duration: PT2M9S
  duration ms: 129959
  explicit: false
  by artist: KK
  in album: shuffle shuffle
    type: MusicAlbum
    date published: 2022-03-18
  isrc code: TCJPR2243294
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T02:11:43+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x186a80914ca3d335c0a7e779012993dc0bb7490115c6c4c22a26c81c5da40d89
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958224
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958224
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243294
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T02:28:43Z
  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 0x186a80914ca3d335c0a7e779012993dc0bb7490115c6c4c22a26c81c5da40d89. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCJPR2243294.
    date published: 2026-07-16T02:28:43Z
  audio: shuffle shuffle
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 170.071
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.7
    additional property: Energy
      type: PropertyValue
      value: 0.588
    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.031
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.834
    additional property: Liveness
      type: PropertyValue
      value: 0.093
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.888
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.153
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major

7melodies
type: MusicAlbum
date published: 2022-03-18

step step
type: MusicAlbum
date published: 2022-03-18

Usual Scenery
type: MusicAlbum
date published: 2022-03-18
track: Usual Scenery
  type: MusicRecording
  duration: PT3M19S
  duration ms: 199183
  explicit: false
  by artist: KK
  in album: Usual Scenery
    type: MusicAlbum
    date published: 2022-03-18
  isrc code: TCJPR2243274
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T21:01:43+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd2fd158606f7fccb009173f085b93086d94ef71a60d7fe28d9fdd2941c30418a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959061
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959061
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243274
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T21:34:21Z
  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 0xd2fd158606f7fccb009173f085b93086d94ef71a60d7fe28d9fdd2941c30418a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/TCJPR2243274.
    date published: 2026-07-21T21:34:21Z
  audio: Usual Scenery
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 113.131
    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: 0.847
    additional property: Energy
      type: PropertyValue
      value: 0.037
    additional property: Speechiness
      type: PropertyValue
      value: 0.071
    additional property: Acousticness
      type: PropertyValue
      value: 0.815
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.909
    additional property: Liveness
      type: PropertyValue
      value: 0.076
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.516
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.009
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Street of stalls at Summer Festival
type: MusicAlbum
date published: 2022-03-18

feel
type: MusicAlbum
date published: 2022-03-18

Moonlit City
type: MusicAlbum
date published: 2022-03-18

Everyday Life in a Frame
type: MusicAlbum
date published: 2022-03-18

swing swing
type: MusicAlbum
date published: 2022-03-18

Short Piece for Music Box and Strings_2
type: MusicAlbum
date published: 2022-03-18

自宅にて
type: MusicAlbum
date published: 2022-03-18

だらだら部活動
type: MusicAlbum
date published: 2022-03-18

incoherent
type: MusicAlbum
date published: 2022-03-18

華めく王都
type: MusicAlbum
date published: 2022-03-18

海風が吹き抜ける港街
type: MusicAlbum
date published: 2022-03-18

the water temple
type: MusicAlbum
date published: 2022-03-18

Strange Antique Dealer
type: MusicAlbum
date published: 2022-03-18

skip skip
type: MusicAlbum
date published: 2022-03-18

memory
type: MusicAlbum
date published: 2022-03-18

closed heart
type: MusicAlbum
date published: 2022-03-18
track: closed heart
  type: MusicRecording
  duration: PT4M22S
  duration ms: 262060
  explicit: false
  by artist: KK
  in album: closed heart
    type: MusicAlbum
    date published: 2022-03-18
  isrc code: TCJPR2243329
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T10:04:47+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe571b714a03c1e4d1b637c063a9900ac046dbfe93f0d9144a1fa576b0dd6858b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956545
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956545
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243329
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T19:59:51Z
  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 0xe571b714a03c1e4d1b637c063a9900ac046dbfe93f0d9144a1fa576b0dd6858b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPR2243329.
    date published: 2026-07-03T19:59:51Z
  audio: closed heart
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 143.158
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.303
    additional property: Energy
      type: PropertyValue
      value: 0.025
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.994
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.96
    additional property: Liveness
      type: PropertyValue
      value: 0.113
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.124
    additional property: Loudness (dB)
      type: PropertyValue
      value: -26.176
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Ruin
type: MusicAlbum
date published: 2022-03-18

Morning Jingle
type: MusicAlbum
date published: 2022-03-18

Crescendo for the 500 Millionth Time
type: MusicAlbum
date published: 2022-03-18

Coffee Shop with Few Orders
type: MusicAlbum
date published: 2022-03-18

A Space Eroded and Distorted by the Curse
type: MusicAlbum
date published: 2022-03-18

夜空と街明かり
type: MusicAlbum
date published: 2022-03-18
track: 夜空と街明かり
  type: MusicRecording
  duration: PT1M35S
  duration ms: 95320
  explicit: false
  by artist: KK
  in album: 夜空と街明かり
    type: MusicAlbum
    date published: 2022-03-18
  isrc code: TCJPR2243247
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T13:36:33+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2dd0e0ba51c5d2f51c94360a118d11ec026e0950986628cf2b6b0e0e74c256e3
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958428
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958428
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243247
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T15:15:14Z
  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 0x2dd0e0ba51c5d2f51c94360a118d11ec026e0950986628cf2b6b0e0e74c256e3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCJPR2243247.
    date published: 2026-07-17T15:15:14Z
  audio: 夜空と街明かり
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 138.012
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.669
    additional property: Energy
      type: PropertyValue
      value: 0.293
    additional property: Speechiness
      type: PropertyValue
      value: 0.057
    additional property: Acousticness
      type: PropertyValue
      value: 0.982
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.936
    additional property: Liveness
      type: PropertyValue
      value: 0.141
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.192
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.152
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major

呪いに侵食され歪んでゆく空間
type: MusicAlbum
date published: 2022-03-18

とある日常
type: MusicAlbum
date published: 2022-03-18

古の世界地図
type: MusicAlbum
date published: 2022-03-18
track: 古の世界地図
  type: MusicRecording
  duration: PT5M41S
  duration ms: 341524
  explicit: false
  by artist: KK
  in album: 古の世界地図
    type: MusicAlbum
    date published: 2022-03-18
  isrc code: TCJPR2243356
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T20:53:41+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x26a173ea0a353903701c6b472a9370bbef874caefdd049b04a2e68fbe4e57417
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956725
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956725
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243356
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T01:12:41Z
  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 0x26a173ea0a353903701c6b472a9370bbef874caefdd049b04a2e68fbe4e57417. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243356.
    date published: 2026-07-05T01:12:41Z
  audio: 古の世界地図
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 151.738
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.203
    additional property: Energy
      type: PropertyValue
      value: 0.186
    additional property: Speechiness
      type: PropertyValue
      value: 0.031
    additional property: Acousticness
      type: PropertyValue
      value: 0.988
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.956
    additional property: Liveness
      type: PropertyValue
      value: 0.114
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.104
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.744
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major

閉ざした心
type: MusicAlbum
date published: 2022-03-18
track: 閉ざした心
  type: MusicRecording
  duration: PT4M22S
  duration ms: 262060
  explicit: false
  by artist: KK
  in album: 閉ざした心
    type: MusicAlbum
    date published: 2022-03-18
  isrc code: TCJPR2243329
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T10:04:47+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe571b714a03c1e4d1b637c063a9900ac046dbfe93f0d9144a1fa576b0dd6858b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956545
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956545
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPR2243329
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T19:59:51Z
  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
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    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-03T19:59:51Z
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イマジナリーライン
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date published: 2022-03-18

theDay
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date published: 2022-03-18

little (jingle.ver)
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date published: 2022-03-18

Melting Parallel Lines
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date published: 2022-03-18

Mad Chase!!
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date published: 2022-03-18

Living Forest World
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date published: 2022-03-18

Guileless Talk
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-17T19:12:23Z
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Flamboyant Royal City
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date published: 2022-03-18

Clock
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date published: 2022-03-18

Anxiety, Fear, Shivering
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date published: 2022-03-18

A Beverage Store in a Kingdom
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date published: 2022-03-18

忘れられた神殿
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-03T08:56:35Z
  audio: 忘れられた神殿
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月の降る街
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date published: 2022-03-18
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-03T19:59:51Z
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古代文明の跡地
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date published: 2022-03-18

massive damage
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date published: 2022-03-18

house
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一コマの日常
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date published: 2022-03-18

Water, Silence, Emotion
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date published: 2022-03-18

shuffle shuffle
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date published: 2022-03-18

day off
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date published: 2022-03-18

Ruin of Ancient Civilization
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date published: 2022-03-18

Mysterious Halloween
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Fantastic Forest
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date published: 2022-03-18

Afternoon Mood
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Dream of Electric Sheep
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date published: 2022-03-18

feel
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date published: 2022-03-18

routine
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house
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date published: 2022-03-18

answer
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date published: 2022-03-18

Imaginary Line
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date published: 2022-03-18

Evening
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Dominus Deus_2
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date published: 2022-03-18

Cminor
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date published: 2022-03-18

Cat Cuisine
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date published: 2022-03-18

ライ麦畑で朝食を
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date published: 2022-03-18

theDay
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date published: 2022-03-18

オルゴールと弦楽のための小曲_2
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date published: 2022-03-18

classical moments
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date published: 2022-03-18

我が家のぬくもり
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date published: 2022-03-18

なんとか大作戦
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date published: 2022-03-18

step step
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date published: 2022-03-18

Continue
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date published: 2022-03-18

swing swing
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date published: 2022-03-18
track: swing swing
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-15T23:25:50Z
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Winter When the Stars Shine
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date published: 2022-03-18

Short Piece for Music Box and Strings
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date published: 2022-03-18

eye-catch_2
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date published: 2022-03-18

Groove
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A Port Town with Sea Breezes
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date published: 2022-03-18

A Certain Daily Life
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date published: 2022-03-18

注文の少ない喫茶店
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suspense piano
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date published: 2022-03-18

Traveling Scenery
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date published: 2022-03-18

Sloppy Club
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date published: 2022-03-18
track: Sloppy Club
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  duration ms: 194351
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-22T08:41:42Z
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orchestral mission
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date published: 2022-03-23

orchestral mission
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date published: 2022-03-23

日常系BGM集
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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
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ffa73564b7de20e4ab953fbb6acc652733d265f6fcad6bc47d169c2c47817d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPS2208995.
    date published: 2026-07-18T19:27:02Z
  audio: 夕方
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 167.981
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.481
    additional property: Energy
      type: PropertyValue
      value: 0.157
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.91
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.937
    additional property: Liveness
      type: PropertyValue
      value: 0.117
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.22
    additional property: Loudness (dB)
      type: PropertyValue
      value: -22.277
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major

Collection of BGM with gentle atmosphere
type: MusicAlbum
date published: 2022-05-26

BGM Collection for Everyday Life
type: MusicAlbum
date published: 2022-05-26
track: Sunday Afternoon
  type: MusicRecording
  duration: PT1M45S
  duration ms: 105560
  explicit: false
  by artist: KK
  in album: BGM Collection for Everyday Life
    type: MusicAlbum
    date published: 2022-05-26
  isrc code: TCJPS2209000
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-12T12:36:28+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8c1be6ae230a63f4d0823a01757978719ca98543aef5ff4e31f881599e5d33e1
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957705
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957705
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPS2209000
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-12T12:50:42Z
  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 0x8c1be6ae230a63f4d0823a01757978719ca98543aef5ff4e31f881599e5d33e1. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/TCJPS2209000.
    date published: 2026-07-12T12:50:42Z
  audio: Sunday Afternoon
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 90.978
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.722
    additional property: Energy
      type: PropertyValue
      value: 0.309
    additional property: Speechiness
      type: PropertyValue
      value: 0.064
    additional property: Acousticness
      type: PropertyValue
      value: 0.859
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.853
    additional property: Liveness
      type: PropertyValue
      value: 0.083
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.27
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.955
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major

冒険・ファンタジーなBGM集
type: MusicAlbum
date published: 2022-05-26

やさしい雰囲気のBGM集
type: MusicAlbum
date published: 2022-05-26

Adventure and fantasy BGM collection
type: MusicAlbum
date published: 2022-05-26

namakemono
type: MusicAlbum
date published: 2022-11-28

壊れた時計
type: MusicAlbum
date published: 2022-11-28

namakemono
type: MusicAlbum
date published: 2022-11-28

Broken clock
type: MusicAlbum
date published: 2022-11-28

Melancholy of Kuleshov
type: MusicAlbum
date published: 2022-12-01

Night Meal Time
type: MusicAlbum
date published: 2022-12-01

クレショフの憂鬱
type: MusicAlbum
date published: 2022-12-01

夜食のじかん
type: MusicAlbum
date published: 2022-12-01
track: 夜食のじかん
  type: MusicRecording
  duration: PT4M21S
  duration ms: 261988
  explicit: false
  by artist: KK
  in album: 夜食のじかん
    type: MusicAlbum
    date published: 2022-12-01
  isrc code: TCJPT2293007
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T12:37:07+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5a26a62650517956d0a03503331161bdadff7fd78db4e67a286c866cccd873f7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958300
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958300
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2293007
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T16:14:30Z
  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 0x5a26a62650517956d0a03503331161bdadff7fd78db4e67a286c866cccd873f7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCJPT2293007.
    date published: 2026-07-16T16:14:30Z
  audio: 夜食のじかん
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 87.978
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.831
    additional property: Energy
      type: PropertyValue
      value: 0.139
    additional property: Speechiness
      type: PropertyValue
      value: 0.071
    additional property: Acousticness
      type: PropertyValue
      value: 0.99
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.922
    additional property: Liveness
      type: PropertyValue
      value: 0.135
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.252
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.419
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Minor

A Story of a Snowy Day
type: MusicAlbum
date published: 2023-01-19

ある雪の降る日の物語
type: MusicAlbum
date published: 2023-01-19

我が家の日常
type: MusicAlbum
date published: 2023-01-30

Everyday Life at Home
type: MusicAlbum
date published: 2023-01-30

ノスタルジア
type: MusicAlbum
date published: 2023-08-12

nostalgia
type: MusicAlbum
date published: 2023-08-12
track: nostalgia
  type: MusicRecording
  duration: PT3M46S
  duration ms: 226758
  explicit: false
  by artist: KK
  in album: nostalgia
    type: MusicAlbum
    date published: 2023-08-12
  isrc code: TCJPW2397030
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T01:03:36+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xcbb8f88eb20b977ee8c5261ddcc61ffdb8d2d96c440be67463fa384b2c9e86b4
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956856
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956856
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPW2397030
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T01:25:57Z
  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 0xcbb8f88eb20b977ee8c5261ddcc61ffdb8d2d96c440be67463fa384b2c9e86b4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCJPW2397030.
    date published: 2026-07-06T01:25:57Z
  audio: nostalgia
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 139.996
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.61
    additional property: Energy
      type: PropertyValue
      value: 0.463
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.373
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.934
    additional property: Liveness
      type: PropertyValue
      value: 0.121
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.313
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.031
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major

Afternoon Mood (Music Box ver.)
type: MusicAlbum
date published: 2023-10-19

昼下がり気分 (オルゴールver.)
type: MusicAlbum
date published: 2023-10-19
track: 昼下がり気分 - オルゴールver.
  type: MusicRecording
  duration: PT5M2S
  duration ms: 302105
  explicit: false
  by artist: KK
  in album: 昼下がり気分 (オルゴールver.)
    type: MusicAlbum
    date published: 2023-10-19
  isrc code: TCJPX2381856
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T17:42:15+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3c9156e8c6754b5aacc19e4bd705364158a497ac8c4ee084d8a316c324ffa4a0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956545
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956545
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPX2381856
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T19:59:51Z
  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 0x3c9156e8c6754b5aacc19e4bd705364158a497ac8c4ee084d8a316c324ffa4a0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPX2381856.
    date published: 2026-07-03T19:59:51Z
  audio: 昼下がり気分 - オルゴールver.
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 113.965
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.793
    additional property: Energy
      type: PropertyValue
      value: 0.462
    additional property: Speechiness
      type: PropertyValue
      value: 0.065
    additional property: Acousticness
      type: PropertyValue
      value: 0.901
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.82
    additional property: Liveness
      type: PropertyValue
      value: 0.138
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.964
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.579
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major

猫猫ギャラクシー
type: MusicAlbum
date published: 2024-01-27

Neko Neko Galaxy
type: MusicAlbum
date published: 2024-01-27

時計じかけの古風な街
type: MusicAlbum
date published: 2024-10-31

Antique Clockwork Town
type: MusicAlbum
date published: 2024-10-31

レトロな夢はお好き？
type: MusicAlbum
date published: 2024-11-23

Do Some Like a Retro Dream?
type: MusicAlbum
date published: 2024-11-23

The Chateau Beneath the Stars
type: MusicAlbum
date published: 2024-11-29

星の下のシャトー
type: MusicAlbum
date published: 2024-11-29
track: 星の下のシャトー
  type: MusicRecording
  duration: PT4M35S
  duration ms: 275624
  explicit: false
  by artist: KK
  in album: 星の下のシャトー
    type: MusicAlbum
    date published: 2024-11-29
  isrc code: TCJPC2481799
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T06:12:20+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x97e887a530eafb71e853550e54fd3d89f4306571bc8142a290b8aaab44dd65d2
  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/TCJPC2481799
  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 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 0x97e887a530eafb71e853550e54fd3d89f4306571bc8142a290b8aaab44dd65d2. 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/TCJPC2481799.
    date published: 2026-07-06T06:56:49Z
  audio: 星の下のシャトー
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 176.071
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.683
    additional property: Energy
      type: PropertyValue
      value: 0.287
    additional property: Speechiness
      type: PropertyValue
      value: 0.132
    additional property: Acousticness
      type: PropertyValue
      value: 0.796
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.703
    additional property: Liveness
      type: PropertyValue
      value: 0.044
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.767
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.157
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major

曖昧な夜更け
type: MusicAlbum
date published: 2024-12-21

Fleeting Midnight
type: MusicAlbum
date published: 2024-12-21

Minimaroom
type: MusicAlbum
date published: 2025-01-18
track: Minimaroom
  type: MusicRecording
  duration: PT2M21S
  duration ms: 141885
  explicit: false
  by artist: KK
  in album: Minimaroom
    type: MusicAlbum
    date published: 2025-01-18
  isrc code: TCJPD2536210
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T16:22:56+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xbd32789cb60a910d1a3656ab39596e1387f3b64cd2e0f2aa555fc28cfbb1f89b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958316
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958316
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPD2536210
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T19:42:29Z
  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
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    encoding format: application/vnd.opentimestamps.ots
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type: MusicAlbum
date published: 2025-01-18

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type: MusicAlbum
date published: 2025-01-30

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type: MusicAlbum
date published: 2025-01-30