斉藤伸子
type: MusicGroup
popularity: 3
followers: 38
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf9e42bab8f0ce037ec3a1f1facb25cb18daa4bf876f76378fc4b7f58b42cd923
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954015
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954015
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/349b17c9-e91b-417b-a34a-dc681605fe8b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/349b17c9-e91b-417b-a34a-dc681605fe8b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/349b17c9-e91b-417b-a34a-dc681605fe8b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T22:55:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf9e42bab8f0ce037ec3a1f1facb25cb18daa4bf876f76378fc4b7f58b42cd923","name":"斉藤伸子","registered_at":"2026-06-16T07:56:02Z","symbol":"NIM0987071","token_address":"0x608c4dce9f0b955d2abffcd7a9a143a29cd0b997","type":"artist","uuid":"349b17c9-e91b-417b-a34a-dc681605fe8b"}
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 0xf9e42bab8f0ce037ec3a1f1facb25cb18daa4bf876f76378fc4b7f58b42cd923. Chain 2 (Bitcoin): anchored in block 954015 (2026-06-16T22:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/349b17c9-e91b-417b-a34a-dc681605fe8b.json and https://artists.proofprofile.net/proofs/artist/349b17c9-e91b-417b-a34a-dc681605fe8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:55:46Z
  text: {"copyright_id":"0xf9e42bab8f0ce037ec3a1f1facb25cb18daa4bf876f76378fc4b7f58b42cd923","name":"斉藤伸子","registered_at":"2026-06-16T07:56:02Z","symbol":"NIM0987071","token_address":"0x608c4dce9f0b955d2abffcd7a9a143a29cd0b997","type":"artist","uuid":"349b17c9-e91b-417b-a34a-dc681605fe8b"}