Black Crow
type: MusicGroup
popularity: 2
followers: 428
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfdbdad1c05773d96f1c74eb56b96f9062011b243b7c771758d6f84f4d6e0dcf6
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/aff2e875-6e7e-42fb-ba71-d3ee65b49ce0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aff2e875-6e7e-42fb-ba71-d3ee65b49ce0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aff2e875-6e7e-42fb-ba71-d3ee65b49ce0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfdbdad1c05773d96f1c74eb56b96f9062011b243b7c771758d6f84f4d6e0dcf6","name":"Black Crow","registered_at":"2026-06-20T12:00:37Z","symbol":"NIM1606872","token_address":"0x46de8e9097aabf33a758d5f4371d8cadbddcba82","type":"artist","uuid":"aff2e875-6e7e-42fb-ba71-d3ee65b49ce0"}
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 0xfdbdad1c05773d96f1c74eb56b96f9062011b243b7c771758d6f84f4d6e0dcf6. 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/aff2e875-6e7e-42fb-ba71-d3ee65b49ce0.json and https://artists.proofprofile.net/proofs/artist/aff2e875-6e7e-42fb-ba71-d3ee65b49ce0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xfdbdad1c05773d96f1c74eb56b96f9062011b243b7c771758d6f84f4d6e0dcf6","name":"Black Crow","registered_at":"2026-06-20T12:00:37Z","symbol":"NIM1606872","token_address":"0x46de8e9097aabf33a758d5f4371d8cadbddcba82","type":"artist","uuid":"aff2e875-6e7e-42fb-ba71-d3ee65b49ce0"}
album: Swords
  type: MusicAlbum
  date published: 2017-10-03
album: Broken Circuits
  type: MusicAlbum
  date published: 2017-10-27
album: Братишка
  type: MusicAlbum
  date published: 2021-10-23