De Natasja’s
type: MusicGroup
genre: polka
popularity: 7
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x685992088fde3c5956ef38b830ccf6437f1810b92398ccfec5da77b95d89dc12
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953975
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953975
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b36e4b5-ae18-4e80-bc41-d57581e869a7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b36e4b5-ae18-4e80-bc41-d57581e869a7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2b36e4b5-ae18-4e80-bc41-d57581e869a7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:53:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x685992088fde3c5956ef38b830ccf6437f1810b92398ccfec5da77b95d89dc12","name":"De Natasja’s","registered_at":"2026-06-16T04:41:28Z","symbol":"NIM0940597","token_address":"0xf3b091d0154f634fc5946fc3d712e1b19c9c66fb","type":"artist","uuid":"2b36e4b5-ae18-4e80-bc41-d57581e869a7"}
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 0x685992088fde3c5956ef38b830ccf6437f1810b92398ccfec5da77b95d89dc12. Chain 2 (Bitcoin): anchored in block 953975 (2026-06-16T16:53:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b36e4b5-ae18-4e80-bc41-d57581e869a7.json and https://artists.proofprofile.net/proofs/artist/2b36e4b5-ae18-4e80-bc41-d57581e869a7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T16:53:41Z
  text: {"copyright_id":"0x685992088fde3c5956ef38b830ccf6437f1810b92398ccfec5da77b95d89dc12","name":"De Natasja’s","registered_at":"2026-06-16T04:41:28Z","symbol":"NIM0940597","token_address":"0xf3b091d0154f634fc5946fc3d712e1b19c9c66fb","type":"artist","uuid":"2b36e4b5-ae18-4e80-bc41-d57581e869a7"}