HAARDD
type: MusicGroup
genre: brazilian hip hop
popularity: 5
followers: 157
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xae3e4e9f7dd3e9b5454d52ca63c222ff78bb8d0f633d897a5911216cc4534448
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9717d22-203e-45f2-9685-4dd6d1e551e0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9717d22-203e-45f2-9685-4dd6d1e551e0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c9717d22-203e-45f2-9685-4dd6d1e551e0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
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 0xae3e4e9f7dd3e9b5454d52ca63c222ff78bb8d0f633d897a5911216cc4534448. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9717d22-203e-45f2-9685-4dd6d1e551e0.json and https://artists.proofprofile.net/proofs/artist/c9717d22-203e-45f2-9685-4dd6d1e551e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
album: Drink Azul
  type: MusicAlbum
  date published: 2018-09-09
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  type: MusicAlbum
  date published: 2019-08-20
album: Cantando & Dançando no Fim do Mundo
  type: MusicAlbum
  date published: 2020-03-21
album: Marasmo do Mais do Mesmo 2
  type: MusicAlbum
  date published: 2020-09-03
album: A Loja
  type: MusicAlbum
  date published: 2022-09-30
album: Polaroid Cam 2
  type: MusicAlbum
  date published: 2023-06-12