Grupo Contraste
type: MusicGroup
genre: cumbia sonidera
genre: salsa
genre: salsa romantica
popularity: 4
followers: 10
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3498e4774067fe063663ec343aad27be50c1267e8943d4da136cf8a9b3868a07
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/754bf46e-efe5-4ba6-98e9-97a2afdba1f2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/754bf46e-efe5-4ba6-98e9-97a2afdba1f2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/754bf46e-efe5-4ba6-98e9-97a2afdba1f2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3498e4774067fe063663ec343aad27be50c1267e8943d4da136cf8a9b3868a07","name":"Grupo Contraste","registered_at":"2026-06-17T06:30:07Z","symbol":"NIM1310167","token_address":"0x6f4144bfd41c3b6d61d4578fc993c80b398b5c90","type":"artist","uuid":"754bf46e-efe5-4ba6-98e9-97a2afdba1f2"}
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 0x3498e4774067fe063663ec343aad27be50c1267e8943d4da136cf8a9b3868a07. 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/754bf46e-efe5-4ba6-98e9-97a2afdba1f2.json and https://artists.proofprofile.net/proofs/artist/754bf46e-efe5-4ba6-98e9-97a2afdba1f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x3498e4774067fe063663ec343aad27be50c1267e8943d4da136cf8a9b3868a07","name":"Grupo Contraste","registered_at":"2026-06-17T06:30:07Z","symbol":"NIM1310167","token_address":"0x6f4144bfd41c3b6d61d4578fc993c80b398b5c90","type":"artist","uuid":"754bf46e-efe5-4ba6-98e9-97a2afdba1f2"}