ハマ・オカモト
type: MusicGroup
popularity: 5
followers: 622
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9cae6bcca31d5fa766c4d39c99d68b461e0c74a67272323ca1ce35cedce350e5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954027
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954027
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a1810cb-4eb0-4103-be89-4a6268a09c01.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a1810cb-4eb0-4103-be89-4a6268a09c01.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3a1810cb-4eb0-4103-be89-4a6268a09c01
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:55:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9cae6bcca31d5fa766c4d39c99d68b461e0c74a67272323ca1ce35cedce350e5","name":"ハマ・オカモト","registered_at":"2026-06-16T09:47:29Z","symbol":"NIM1013664","token_address":"0xef1eb1f75983993fb1253d2b6903ea6fe3162e09","type":"artist","uuid":"3a1810cb-4eb0-4103-be89-4a6268a09c01"}
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 0x9cae6bcca31d5fa766c4d39c99d68b461e0c74a67272323ca1ce35cedce350e5. Chain 2 (Bitcoin): anchored in block 954028 (2026-06-17T01:08:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a1810cb-4eb0-4103-be89-4a6268a09c01.json and https://artists.proofprofile.net/proofs/artist/3a1810cb-4eb0-4103-be89-4a6268a09c01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T01:08:06Z
  text: {"copyright_id":"0x9cae6bcca31d5fa766c4d39c99d68b461e0c74a67272323ca1ce35cedce350e5","name":"ハマ・オカモト","registered_at":"2026-06-16T09:47:29Z","symbol":"NIM1013664","token_address":"0xef1eb1f75983993fb1253d2b6903ea6fe3162e09","type":"artist","uuid":"3a1810cb-4eb0-4103-be89-4a6268a09c01"}