d.kawamura
type: MusicGroup
popularity: 8
followers: 20
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x01a8c67d4d56e1d7c248bcf772ff40a109f0edd3c73aa2b3c2023537f4fe0da9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f44d8d58-b99f-4dfe-852c-36c610acb10c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f44d8d58-b99f-4dfe-852c-36c610acb10c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f44d8d58-b99f-4dfe-852c-36c610acb10c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a8c67d4d56e1d7c248bcf772ff40a109f0edd3c73aa2b3c2023537f4fe0da9. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f44d8d58-b99f-4dfe-852c-36c610acb10c.json and https://artists.proofprofile.net/proofs/artist/f44d8d58-b99f-4dfe-852c-36c610acb10c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
album: 浦島太郎の冒険
  type: MusicAlbum
  date published: 2024-03-01
album: 桃太郎
  type: MusicAlbum
  date published: 2024-03-01
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  type: MusicAlbum
  date published: 2024-03-02
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  type: MusicAlbum
  date published: 2024-03-07
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  type: MusicAlbum
  date published: 2024-03-07
album: 輪廻の果てで逢いましょう
  type: MusicAlbum
  date published: 2024-04-07
album: At the end of reincarnation
  type: MusicAlbum
  date published: 2024-04-08
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  type: MusicAlbum
  date published: 2024-04-10
album: 春の別れ
  type: MusicAlbum
  date published: 2024-04-10
album: Focus On Me (528hz healing) [Radio Edit]
  type: MusicAlbum
  date published: 2024-04-10
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  type: MusicAlbum
  date published: 2024-04-10
album: 528hz techno1 (Concentration healing)
  type: MusicAlbum
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album: 528hz techno5 (Concentration healing)
  type: MusicAlbum
  date published: 2024-04-10
album: 528hz techno2 (Concentration healing)
  type: MusicAlbum
  date published: 2024-04-11
album: 528hz techno3 (Concentration healing)
  type: MusicAlbum
  date published: 2024-04-12
album: 528hz techno4 (Concentration healing)
  type: MusicAlbum
  date published: 2024-04-13
album: Rise Above (528hz healing)
  type: MusicAlbum
  date published: 2024-04-14
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  type: MusicAlbum
  date published: 2024-04-17
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  type: MusicAlbum
  date published: 2024-05-01
album: The Beauty of Vocalists vol.1
  type: MusicAlbum
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album: The Beauty of Vocalists vol.2
  type: MusicAlbum
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  type: MusicAlbum
  date published: 2024-05-10
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2024-05-30
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  type: MusicAlbum
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