Gwen Keiko
type: MusicGroup
popularity: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xad7a3b6109d9bc174004195629f76655aa82608c90d1ef95e657129555737a7e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0476f29d-e9de-49a3-988c-f25be77ad049.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0476f29d-e9de-49a3-988c-f25be77ad049.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0476f29d-e9de-49a3-988c-f25be77ad049
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xad7a3b6109d9bc174004195629f76655aa82608c90d1ef95e657129555737a7e","name":"Gwen Keiko","registered_at":"2026-06-15T15:09:17Z","symbol":"NIM0746738","token_address":"0xaeaf9bcd18c81100d44ac1ad1b0ec3c43e8c5cb4","type":"artist","uuid":"0476f29d-e9de-49a3-988c-f25be77ad049"}
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 0xad7a3b6109d9bc174004195629f76655aa82608c90d1ef95e657129555737a7e. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0476f29d-e9de-49a3-988c-f25be77ad049.json and https://artists.proofprofile.net/proofs/artist/0476f29d-e9de-49a3-988c-f25be77ad049.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T00:30:31Z
  text: {"copyright_id":"0xad7a3b6109d9bc174004195629f76655aa82608c90d1ef95e657129555737a7e","name":"Gwen Keiko","registered_at":"2026-06-15T15:09:17Z","symbol":"NIM0746738","token_address":"0xaeaf9bcd18c81100d44ac1ad1b0ec3c43e8c5cb4","type":"artist","uuid":"0476f29d-e9de-49a3-988c-f25be77ad049"}