Két
type: MusicGroup
popularity: 3
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x35abbb95ba273500456bb76248f5721419d58a4b7d02594be9c42a294295f8e7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954647
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954647
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d6490a9c-d3b3-4ed3-93fb-78ea28525869.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d6490a9c-d3b3-4ed3-93fb-78ea28525869.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d6490a9c-d3b3-4ed3-93fb-78ea28525869
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:36:58Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x35abbb95ba273500456bb76248f5721419d58a4b7d02594be9c42a294295f8e7","name":"Két","registered_at":"2026-06-21T03:07:16Z","symbol":"NIM1797371","token_address":"0xd7b05d374ce5018af04a75b7d612ec7f04b79a5b","type":"artist","uuid":"d6490a9c-d3b3-4ed3-93fb-78ea28525869"}
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 0x35abbb95ba273500456bb76248f5721419d58a4b7d02594be9c42a294295f8e7. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6490a9c-d3b3-4ed3-93fb-78ea28525869.json and https://artists.proofprofile.net/proofs/artist/d6490a9c-d3b3-4ed3-93fb-78ea28525869.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:36:58Z
  text: {"copyright_id":"0x35abbb95ba273500456bb76248f5721419d58a4b7d02594be9c42a294295f8e7","name":"Két","registered_at":"2026-06-21T03:07:16Z","symbol":"NIM1797371","token_address":"0xd7b05d374ce5018af04a75b7d612ec7f04b79a5b","type":"artist","uuid":"d6490a9c-d3b3-4ed3-93fb-78ea28525869"}