窪田宏
type: MusicGroup
popularity: 3
followers: 224
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6729363a074c8313e65c4d16e7b5bccc2a5e86fb2cf1d7804967f8d309103233
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b114652e-2cc4-4f2b-af74-bf58c677ce32.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b114652e-2cc4-4f2b-af74-bf58c677ce32.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b114652e-2cc4-4f2b-af74-bf58c677ce32
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6729363a074c8313e65c4d16e7b5bccc2a5e86fb2cf1d7804967f8d309103233","name":"窪田宏","registered_at":"2026-06-20T12:31:45Z","symbol":"NIM1612265","token_address":"0xdd55bfcefa0c9ac4fe3395dddceec5039f0afe27","type":"artist","uuid":"b114652e-2cc4-4f2b-af74-bf58c677ce32"}
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 0x6729363a074c8313e65c4d16e7b5bccc2a5e86fb2cf1d7804967f8d309103233. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b114652e-2cc4-4f2b-af74-bf58c677ce32.json and https://artists.proofprofile.net/proofs/artist/b114652e-2cc4-4f2b-af74-bf58c677ce32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x6729363a074c8313e65c4d16e7b5bccc2a5e86fb2cf1d7804967f8d309103233","name":"窪田宏","registered_at":"2026-06-20T12:31:45Z","symbol":"NIM1612265","token_address":"0xdd55bfcefa0c9ac4fe3395dddceec5039f0afe27","type":"artist","uuid":"b114652e-2cc4-4f2b-af74-bf58c677ce32"}
album: Project 4our
  type: MusicAlbum
  date published: 1987-02-21
album: Won De PROJECT 4OUR-II
  type: MusicAlbum
  date published: 1988-06-21
album: RAISE THE WIND
  type: MusicAlbum
  date published: 1989-06-21
album: GO AHEAD!
  type: MusicAlbum
  date published: 1991-09-21
album: HIROSHI K.
  type: MusicAlbum
  date published: 1994-06-17
album: One's Love
  type: MusicAlbum
  date published: 1996-11-21
album: How Catcher
  type: MusicAlbum
  date published: 1997-10-17