Valentine D.C.
type: MusicGroup
genre: visual kei
popularity: 5
followers: 441
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6978a5ab2e22e23944a67a8f8e4089851921147d55826b02e7c656e624fb6b3e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/63297f80-8441-4ebe-8f80-e78afce1e4ba.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/63297f80-8441-4ebe-8f80-e78afce1e4ba.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/63297f80-8441-4ebe-8f80-e78afce1e4ba
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6978a5ab2e22e23944a67a8f8e4089851921147d55826b02e7c656e624fb6b3e","name":"Valentine D.C.","registered_at":"2026-06-17T00:11:40Z","symbol":"NIM1219850","token_address":"0x726a3debd7c6e9dc91593b9551983fca1d4e623d","type":"artist","uuid":"63297f80-8441-4ebe-8f80-e78afce1e4ba"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6978a5ab2e22e23944a67a8f8e4089851921147d55826b02e7c656e624fb6b3e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63297f80-8441-4ebe-8f80-e78afce1e4ba.json and https://artists.proofprofile.net/proofs/artist/63297f80-8441-4ebe-8f80-e78afce1e4ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x6978a5ab2e22e23944a67a8f8e4089851921147d55826b02e7c656e624fb6b3e","name":"Valentine D.C.","registered_at":"2026-06-17T00:11:40Z","symbol":"NIM1219850","token_address":"0x726a3debd7c6e9dc91593b9551983fca1d4e623d","type":"artist","uuid":"63297f80-8441-4ebe-8f80-e78afce1e4ba"}
album: カーテンコール
  type: MusicAlbum
  date published: 1998-01-01
album: GENERATION
  type: MusicAlbum
  date published: 1998-01-21
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  type: MusicAlbum
  date published: 1998-06-20
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  type: MusicAlbum
  date published: 1998-09-19
album: public address
  type: MusicAlbum
  date published: 1998-10-01
album: Be a believer
  type: MusicAlbum
  date published: 1999-05-29
album: Yell
  type: MusicAlbum
  date published: 1999-06-19