Black Black
type: MusicGroup
description: is a brand of caffeinated chewing gum produced in Japan by Lotte that has been sold since 1983. It is popular in Japan, partially due to its television commercials that star Jean-Claude Van Damme. Af
popularity: 2
followers: 3337
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xacc69c88e26b875a5fcebeb1dbdf65848d68b6aa2a6380d4bbc1768cf3bca461
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9e5d2ca1-634c-4e87-838a-dedf506cf785.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9e5d2ca1-634c-4e87-838a-dedf506cf785.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9e5d2ca1-634c-4e87-838a-dedf506cf785
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xacc69c88e26b875a5fcebeb1dbdf65848d68b6aa2a6380d4bbc1768cf3bca461","name":"Black Black","registered_at":"2026-06-20T04:52:46Z","symbol":"NIM1517808","token_address":"0x1e05fe70d5957dc018972bf6dd3f2ee1c90bcdbd","type":"artist","uuid":"9e5d2ca1-634c-4e87-838a-dedf506cf785"}
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 0xacc69c88e26b875a5fcebeb1dbdf65848d68b6aa2a6380d4bbc1768cf3bca461. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e5d2ca1-634c-4e87-838a-dedf506cf785.json and https://artists.proofprofile.net/proofs/artist/9e5d2ca1-634c-4e87-838a-dedf506cf785.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0xacc69c88e26b875a5fcebeb1dbdf65848d68b6aa2a6380d4bbc1768cf3bca461","name":"Black Black","registered_at":"2026-06-20T04:52:46Z","symbol":"NIM1517808","token_address":"0x1e05fe70d5957dc018972bf6dd3f2ee1c90bcdbd","type":"artist","uuid":"9e5d2ca1-634c-4e87-838a-dedf506cf785"}
album: Blue Sky
  type: MusicAlbum
  date published: 2023-05-15
album: Blue Sky
  type: MusicAlbum
  date published: 2023-05-15
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  type: MusicAlbum
  date published: 2023-05-30
album: Keep Dancing
  type: MusicAlbum
  date published: 2023-05-30
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  type: MusicAlbum
  date published: 2023-06-28
album: Before Dawn
  type: MusicAlbum
  date published: 2023-06-28
album: Kick Strike
  type: MusicAlbum
  date published: 2023-08-21
album: Kick Strike
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album: Samurai Sword
  type: MusicAlbum
  date published: 2023-11-01
album: Samurai Sword
  type: MusicAlbum
  date published: 2023-11-01