Grupo Contrastes
type: MusicGroup
genre: brazilian evangelical music
popularity: 2
followers: 537
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2a45f4b2832f50adb2a668455ab9eaf1a19801aebd3b32d157c331efcdf03515
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954130
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954130
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7c65aa71-c926-42d4-8eac-bb5172d55b15.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7c65aa71-c926-42d4-8eac-bb5172d55b15.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7c65aa71-c926-42d4-8eac-bb5172d55b15
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:07:14Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2a45f4b2832f50adb2a668455ab9eaf1a19801aebd3b32d157c331efcdf03515","name":"Grupo Contrastes","registered_at":"2026-06-17T09:02:48Z","symbol":"NIM1346533","token_address":"0xac93732f3afe9c2a760e96da72c42c686a10d40e","type":"artist","uuid":"7c65aa71-c926-42d4-8eac-bb5172d55b15"}
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 0x2a45f4b2832f50adb2a668455ab9eaf1a19801aebd3b32d157c331efcdf03515. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c65aa71-c926-42d4-8eac-bb5172d55b15.json and https://artists.proofprofile.net/proofs/artist/7c65aa71-c926-42d4-8eac-bb5172d55b15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:07:14Z
  text: {"copyright_id":"0x2a45f4b2832f50adb2a668455ab9eaf1a19801aebd3b32d157c331efcdf03515","name":"Grupo Contrastes","registered_at":"2026-06-17T09:02:48Z","symbol":"NIM1346533","token_address":"0xac93732f3afe9c2a760e96da72c42c686a10d40e","type":"artist","uuid":"7c65aa71-c926-42d4-8eac-bb5172d55b15"}
album: Vinde a Mim
  type: MusicAlbum
  date published: 2012-10-20
album: Casa Cheia
  type: MusicAlbum
  date published: 2019-10-10
album: Casa Cheia (Playback)
  type: MusicAlbum
  date published: 2019-12-20