Sign of Evil
type: MusicGroup
genre: black metal
genre: speed metal
popularity: 3
followers: 906
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x81176f99c92c57dbd07499550ed8dcefc46a2ec364658de8a3e6e27bb0e59267
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/718cc3d6-c337-4b41-bb73-a2bfcae60eb1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/718cc3d6-c337-4b41-bb73-a2bfcae60eb1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/718cc3d6-c337-4b41-bb73-a2bfcae60eb1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x81176f99c92c57dbd07499550ed8dcefc46a2ec364658de8a3e6e27bb0e59267","name":"Sign of Evil","registered_at":"2026-06-17T05:12:22Z","symbol":"NIM1291608","token_address":"0xbe74050718295c79ef75747b68bbec81475ebfe7","type":"artist","uuid":"718cc3d6-c337-4b41-bb73-a2bfcae60eb1"}
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 0x81176f99c92c57dbd07499550ed8dcefc46a2ec364658de8a3e6e27bb0e59267. 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/718cc3d6-c337-4b41-bb73-a2bfcae60eb1.json and https://artists.proofprofile.net/proofs/artist/718cc3d6-c337-4b41-bb73-a2bfcae60eb1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x81176f99c92c57dbd07499550ed8dcefc46a2ec364658de8a3e6e27bb0e59267","name":"Sign of Evil","registered_at":"2026-06-17T05:12:22Z","symbol":"NIM1291608","token_address":"0xbe74050718295c79ef75747b68bbec81475ebfe7","type":"artist","uuid":"718cc3d6-c337-4b41-bb73-a2bfcae60eb1"}
album: Psychodelic Horror
  type: MusicAlbum
  date published: 2020-03-12
album: Psychodelic Death
  type: MusicAlbum
  date published: 2022-05-20
album: Psychodelic Visions
  type: MusicAlbum
  date published: 2023-11-01