Washio Sumi(CV:Mimori Suzuko)
type: MusicGroup
popularity: 2
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1c9b75e6ddf394db4eaa1d2761b3a361fd1ee855e8adf3a0bfe2ad398f077f67
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954659
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954659
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dc605640-24d0-4fe7-9c76-b4dd78e3d650.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dc605640-24d0-4fe7-9c76-b4dd78e3d650.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dc605640-24d0-4fe7-9c76-b4dd78e3d650
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T06:14:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1c9b75e6ddf394db4eaa1d2761b3a361fd1ee855e8adf3a0bfe2ad398f077f67","name":"Washio Sumi(CV:Mimori Suzuko)","registered_at":"2026-06-21T05:09:04Z","symbol":"NIM1829570","token_address":"0x909fba17cf9afea2a706f825c30597cb77c990e2","type":"artist","uuid":"dc605640-24d0-4fe7-9c76-b4dd78e3d650"}
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 0x1c9b75e6ddf394db4eaa1d2761b3a361fd1ee855e8adf3a0bfe2ad398f077f67. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc605640-24d0-4fe7-9c76-b4dd78e3d650.json and https://artists.proofprofile.net/proofs/artist/dc605640-24d0-4fe7-9c76-b4dd78e3d650.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T06:14:42Z
  text: {"copyright_id":"0x1c9b75e6ddf394db4eaa1d2761b3a361fd1ee855e8adf3a0bfe2ad398f077f67","name":"Washio Sumi(CV:Mimori Suzuko)","registered_at":"2026-06-21T05:09:04Z","symbol":"NIM1829570","token_address":"0x909fba17cf9afea2a706f825c30597cb77c990e2","type":"artist","uuid":"dc605640-24d0-4fe7-9c76-b4dd78e3d650"}