Mc Ktchau
type: MusicGroup
genre: fado
popularity: 11
followers: 14
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x430ca58da13578864d3cd275b4b261082315729c67f088ddeb079931850ebf9c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953681
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953681
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/63d7782c-ffa6-4e77-a6d6-ff08dc902851.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/63d7782c-ffa6-4e77-a6d6-ff08dc902851.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/63d7782c-ffa6-4e77-a6d6-ff08dc902851
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T19:31:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x430ca58da13578864d3cd275b4b261082315729c67f088ddeb079931850ebf9c","name":"Mc Ktchau","registered_at":"2026-06-14T15:00:36Z","symbol":"NIM0489327","token_address":"0xa743460fb2d6231a095799fb4fecad58511cf7a4","type":"artist","uuid":"63d7782c-ffa6-4e77-a6d6-ff08dc902851"}
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 0x430ca58da13578864d3cd275b4b261082315729c67f088ddeb079931850ebf9c. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63d7782c-ffa6-4e77-a6d6-ff08dc902851.json and https://artists.proofprofile.net/proofs/artist/63d7782c-ffa6-4e77-a6d6-ff08dc902851.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:49:28Z
  text: {"copyright_id":"0x430ca58da13578864d3cd275b4b261082315729c67f088ddeb079931850ebf9c","name":"Mc Ktchau","registered_at":"2026-06-14T15:00:36Z","symbol":"NIM0489327","token_address":"0xa743460fb2d6231a095799fb4fecad58511cf7a4","type":"artist","uuid":"63d7782c-ffa6-4e77-a6d6-ff08dc902851"}