Hacavitz
type: MusicGroup
genre: black metal
genre: death metal
popularity: 5
followers: 2598
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc72bcc84695f0b52848cbbd1f2ca69cad85df2945d2549c7e9723546a281972f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953903
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953903
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/143bb956-a16c-40b1-882c-0e8482d8ec77.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/143bb956-a16c-40b1-882c-0e8482d8ec77.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/143bb956-a16c-40b1-882c-0e8482d8ec77
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:05:05Z
additional property: OTSCanonicalRecord
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 0xc72bcc84695f0b52848cbbd1f2ca69cad85df2945d2549c7e9723546a281972f. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/143bb956-a16c-40b1-882c-0e8482d8ec77.json and https://artists.proofprofile.net/proofs/artist/143bb956-a16c-40b1-882c-0e8482d8ec77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
album: Venganza
  type: MusicAlbum
  date published: 2006-01-31
album: Venganza
  type: MusicAlbum
  date published: 2007-01-02
album: Katun
  type: MusicAlbum
  date published: 2007-06-26
album: Katun
  type: MusicAlbum
  date published: 2007-06-26
album: Metztli Obscura
  type: MusicAlbum
  date published: 2010-06-22
album: Metztli Obscura
  type: MusicAlbum
  date published: 2010-06-22
album: Darkness Beyond
  type: MusicAlbum
  date published: 2015-02-24
album: Nex Nihil
  type: MusicAlbum
  date published: 2018-09-28
album: Muerte
  type: MusicAlbum
  date published: 2024-04-26