大塚 利恵
type: MusicGroup
popularity: 3
followers: 175
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb65b488d265b2e83d1f48c6ef2a75befc7556be1b58d9ab4f4299a08e14affe5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a651c777-1874-4a73-8083-4fec23a65d4d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a651c777-1874-4a73-8083-4fec23a65d4d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a651c777-1874-4a73-8083-4fec23a65d4d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb65b488d265b2e83d1f48c6ef2a75befc7556be1b58d9ab4f4299a08e14affe5","name":"大塚 利恵","registered_at":"2026-06-20T07:20:24Z","symbol":"NIM1555601","token_address":"0x4ff4df6c3ce9c6448e27c120a9a5de4fcb0e1120","type":"artist","uuid":"a651c777-1874-4a73-8083-4fec23a65d4d"}
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 0xb65b488d265b2e83d1f48c6ef2a75befc7556be1b58d9ab4f4299a08e14affe5. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a651c777-1874-4a73-8083-4fec23a65d4d.json and https://artists.proofprofile.net/proofs/artist/a651c777-1874-4a73-8083-4fec23a65d4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xb65b488d265b2e83d1f48c6ef2a75befc7556be1b58d9ab4f4299a08e14affe5","name":"大塚 利恵","registered_at":"2026-06-20T07:20:24Z","symbol":"NIM1555601","token_address":"0x4ff4df6c3ce9c6448e27c120a9a5de4fcb0e1120","type":"artist","uuid":"a651c777-1874-4a73-8083-4fec23a65d4d"}
album: ｢いいよ。｣
  type: MusicAlbum
  date published: 1998-07-18
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  type: MusicAlbum
  date published: 1998-10-31
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  type: MusicAlbum
  date published: 1998-11-21
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  type: MusicAlbum
  date published: 1999
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  type: MusicAlbum
  date published: 1999-04-29
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  type: MusicAlbum
  date published: 1999-09-22
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  type: MusicAlbum
  date published: 2003-05-23
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  type: MusicAlbum
  date published: 2006-03-10