De Kupkes
type: MusicGroup
popularity: 7
followers: 104
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb511662f683ad7dee0c2e9650d91bf8bd33dc1b1bd1fe213d21d6eb613ca892b
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/b354be28-f975-462e-b91c-dfee3dd694f9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b354be28-f975-462e-b91c-dfee3dd694f9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b354be28-f975-462e-b91c-dfee3dd694f9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb511662f683ad7dee0c2e9650d91bf8bd33dc1b1bd1fe213d21d6eb613ca892b","name":"De Kupkes","registered_at":"2026-06-20T13:33:10Z","symbol":"NIM1622737","token_address":"0x0df048a19f71d7befec76bd73e27f29e2105e4c0","type":"artist","uuid":"b354be28-f975-462e-b91c-dfee3dd694f9"}
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 0xb511662f683ad7dee0c2e9650d91bf8bd33dc1b1bd1fe213d21d6eb613ca892b. 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/b354be28-f975-462e-b91c-dfee3dd694f9.json and https://artists.proofprofile.net/proofs/artist/b354be28-f975-462e-b91c-dfee3dd694f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xb511662f683ad7dee0c2e9650d91bf8bd33dc1b1bd1fe213d21d6eb613ca892b","name":"De Kupkes","registered_at":"2026-06-20T13:33:10Z","symbol":"NIM1622737","token_address":"0x0df048a19f71d7befec76bd73e27f29e2105e4c0","type":"artist","uuid":"b354be28-f975-462e-b91c-dfee3dd694f9"}
album: Veur unne lach
  type: MusicAlbum
  date published: 2003-11-11
album: 1+1=11
  type: MusicAlbum
  date published: 2023-11-04