Contra Corrente
type: MusicGroup
genre: brazilian hip hop
popularity: 2
followers: 3853
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x92ad00531e455f5959313f60a66ff648d478a1b8c76eba453c5ff35ed7c81888
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/df7983c1-9961-4d3e-a761-9c9775fe2265.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/df7983c1-9961-4d3e-a761-9c9775fe2265.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/df7983c1-9961-4d3e-a761-9c9775fe2265
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x92ad00531e455f5959313f60a66ff648d478a1b8c76eba453c5ff35ed7c81888","name":"Contra Corrente","registered_at":"2026-06-21T06:28:41Z","symbol":"NIM1848367","token_address":"0x2dbc244abd707ae9447c3448c90f169b41af739b","type":"artist","uuid":"df7983c1-9961-4d3e-a761-9c9775fe2265"}
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 0x92ad00531e455f5959313f60a66ff648d478a1b8c76eba453c5ff35ed7c81888. 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/df7983c1-9961-4d3e-a761-9c9775fe2265.json and https://artists.proofprofile.net/proofs/artist/df7983c1-9961-4d3e-a761-9c9775fe2265.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x92ad00531e455f5959313f60a66ff648d478a1b8c76eba453c5ff35ed7c81888","name":"Contra Corrente","registered_at":"2026-06-21T06:28:41Z","symbol":"NIM1848367","token_address":"0x2dbc244abd707ae9447c3448c90f169b41af739b","type":"artist","uuid":"df7983c1-9961-4d3e-a761-9c9775fe2265"}
album: O Som
  type: MusicAlbum
  date published: 2016-09-09
album: Diamante de Sangue (feat. Raillow)
  type: MusicAlbum
  date published: 2016-12-09
album: Deja Vu
  type: MusicAlbum
  date published: 2017-02-10