Seizo Nakata
type: MusicGroup
popularity: 9
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x28b9e23b8b1f922a6ffb4784156423b34b76d878b9b5418dd9b7d1b11adcba8f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954097
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954097
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7a375e90-3f1c-42d8-a0f2-ee60dca6d38a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7a375e90-3f1c-42d8-a0f2-ee60dca6d38a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7a375e90-3f1c-42d8-a0f2-ee60dca6d38a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T13:13:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x28b9e23b8b1f922a6ffb4784156423b34b76d878b9b5418dd9b7d1b11adcba8f","name":"Seizo Nakata","registered_at":"2026-06-17T08:37:34Z","symbol":"NIM1340521","token_address":"0x9fa2d722f070f6e2a0d33b67cb0f1520eb7a2d55","type":"artist","uuid":"7a375e90-3f1c-42d8-a0f2-ee60dca6d38a"}
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 0x28b9e23b8b1f922a6ffb4784156423b34b76d878b9b5418dd9b7d1b11adcba8f. Chain 2 (Bitcoin): anchored in block 954097 (2026-06-17T13:13:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a375e90-3f1c-42d8-a0f2-ee60dca6d38a.json and https://artists.proofprofile.net/proofs/artist/7a375e90-3f1c-42d8-a0f2-ee60dca6d38a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T13:13:51Z
  text: {"copyright_id":"0x28b9e23b8b1f922a6ffb4784156423b34b76d878b9b5418dd9b7d1b11adcba8f","name":"Seizo Nakata","registered_at":"2026-06-17T08:37:34Z","symbol":"NIM1340521","token_address":"0x9fa2d722f070f6e2a0d33b67cb0f1520eb7a2d55","type":"artist","uuid":"7a375e90-3f1c-42d8-a0f2-ee60dca6d38a"}