Black Cat Attack
type: MusicGroup
genre: deathrock
genre: psychobilly
popularity: 3
followers: 1022
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x89d82f2274c6373f37562c001181afbf3a63c4a68f37676fb3e9f01cf233213e
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/598820bf-5dd9-4d9a-a983-98eb773d5299.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/598820bf-5dd9-4d9a-a983-98eb773d5299.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/598820bf-5dd9-4d9a-a983-98eb773d5299
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x89d82f2274c6373f37562c001181afbf3a63c4a68f37676fb3e9f01cf233213e","name":"Black Cat Attack","registered_at":"2026-06-16T20:47:06Z","symbol":"NIM1171052","token_address":"0x318e49aa2b0b4ef58e3223599dfd6c8b40f05c2e","type":"artist","uuid":"598820bf-5dd9-4d9a-a983-98eb773d5299"}
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 0x89d82f2274c6373f37562c001181afbf3a63c4a68f37676fb3e9f01cf233213e. 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/598820bf-5dd9-4d9a-a983-98eb773d5299.json and https://artists.proofprofile.net/proofs/artist/598820bf-5dd9-4d9a-a983-98eb773d5299.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x89d82f2274c6373f37562c001181afbf3a63c4a68f37676fb3e9f01cf233213e","name":"Black Cat Attack","registered_at":"2026-06-16T20:47:06Z","symbol":"NIM1171052","token_address":"0x318e49aa2b0b4ef58e3223599dfd6c8b40f05c2e","type":"artist","uuid":"598820bf-5dd9-4d9a-a983-98eb773d5299"}
album: Vamparty
  type: MusicAlbum
  date published: 2012-12-21
album: Bright Side of the Moon
  type: MusicAlbum
  date published: 2014-04-25
album: Edraculation
  type: MusicAlbum
  date published: 2016-12-23