Matakabra
type: MusicGroup
genre: deathcore
genre: djent
popularity: 2
followers: 1316
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xde88340bdf31ecec5d0ba52d2a8744cba906cd4eb8e556d12d7d987a9810d3d5
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/65e3e457-f00b-47f2-b9b4-d3abd02596c6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/65e3e457-f00b-47f2-b9b4-d3abd02596c6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/65e3e457-f00b-47f2-b9b4-d3abd02596c6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
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 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 0xde88340bdf31ecec5d0ba52d2a8744cba906cd4eb8e556d12d7d987a9810d3d5. 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/65e3e457-f00b-47f2-b9b4-d3abd02596c6.json and https://artists.proofprofile.net/proofs/artist/65e3e457-f00b-47f2-b9b4-d3abd02596c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Ao Vivo No Abril Pro Rock
  type: MusicAlbum
  date published: 2021-04-02
album: Corpo Fechado
  type: MusicAlbum
  date published: 2024-05-03
album: Banalidade do Mal
  type: MusicAlbum
  date published: 2024-03-15
album: Drama da Realidade
  type: MusicAlbum
  date published: 2022-08-19
album: Marginal
  type: MusicAlbum
  date published: 2017-08-10
album: Prole
  type: MusicAlbum
  date published: 2016-08-10
album: KETSURO
  type: MusicAlbum
  date published: 2022-10-28