Master Visser
type: MusicGroup
popularity: 9
followers: 2808
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf7c1df2f3158e8e0899f59f8a644c43fa766379e424ddde7701189d0f374be59
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c03a09b5-47de-41ae-b82c-c9bc6b5cc4a3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c03a09b5-47de-41ae-b82c-c9bc6b5cc4a3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c03a09b5-47de-41ae-b82c-c9bc6b5cc4a3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf7c1df2f3158e8e0899f59f8a644c43fa766379e424ddde7701189d0f374be59","name":"Master Visser","registered_at":"2026-06-20T19:23:24Z","symbol":"NIM1690881","token_address":"0x83c34bd59ff2b77b379d6204676760315492df3f","type":"artist","uuid":"c03a09b5-47de-41ae-b82c-c9bc6b5cc4a3"}
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 0xf7c1df2f3158e8e0899f59f8a644c43fa766379e424ddde7701189d0f374be59. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c03a09b5-47de-41ae-b82c-c9bc6b5cc4a3.json and https://artists.proofprofile.net/proofs/artist/c03a09b5-47de-41ae-b82c-c9bc6b5cc4a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0xf7c1df2f3158e8e0899f59f8a644c43fa766379e424ddde7701189d0f374be59","name":"Master Visser","registered_at":"2026-06-20T19:23:24Z","symbol":"NIM1690881","token_address":"0x83c34bd59ff2b77b379d6204676760315492df3f","type":"artist","uuid":"c03a09b5-47de-41ae-b82c-c9bc6b5cc4a3"}