Kumiko Ohsugi
type: MusicGroup
popularity: 5
followers: 45
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5b7d7db11129974768b3e495f9501daa1523f13eef7e4d65d5d3164592d4031b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/318f58b3-444e-447f-80ba-3927b44a33b4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/318f58b3-444e-447f-80ba-3927b44a33b4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/318f58b3-444e-447f-80ba-3927b44a33b4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5b7d7db11129974768b3e495f9501daa1523f13eef7e4d65d5d3164592d4031b","name":"Kumiko Ohsugi","registered_at":"2026-06-16T06:48:43Z","symbol":"NIM0970992","token_address":"0x86af053b6371110710482a9dd63e7cb5bb2fc561","type":"artist","uuid":"318f58b3-444e-447f-80ba-3927b44a33b4"}
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 0x5b7d7db11129974768b3e495f9501daa1523f13eef7e4d65d5d3164592d4031b. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/318f58b3-444e-447f-80ba-3927b44a33b4.json and https://artists.proofprofile.net/proofs/artist/318f58b3-444e-447f-80ba-3927b44a33b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x5b7d7db11129974768b3e495f9501daa1523f13eef7e4d65d5d3164592d4031b","name":"Kumiko Ohsugi","registered_at":"2026-06-16T06:48:43Z","symbol":"NIM0970992","token_address":"0x86af053b6371110710482a9dd63e7cb5bb2fc561","type":"artist","uuid":"318f58b3-444e-447f-80ba-3927b44a33b4"}