Mamiko Uchiwa
type: MusicGroup
popularity: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xae01025216f951e9a91cc9db51cdb21de45b52b1d0f04f8eb0ec2935c7b9a4d8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bb0992b9-d83c-4bcd-8ff4-be5a52bc3903.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bb0992b9-d83c-4bcd-8ff4-be5a52bc3903.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bb0992b9-d83c-4bcd-8ff4-be5a52bc3903
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xae01025216f951e9a91cc9db51cdb21de45b52b1d0f04f8eb0ec2935c7b9a4d8","name":"Mamiko Uchiwa","registered_at":"2026-06-20T16:54:00Z","symbol":"NIM1659283","token_address":"0xae7a285c76a718fe040605d257d7af73a697ab3e","type":"artist","uuid":"bb0992b9-d83c-4bcd-8ff4-be5a52bc3903"}
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 0xae01025216f951e9a91cc9db51cdb21de45b52b1d0f04f8eb0ec2935c7b9a4d8. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb0992b9-d83c-4bcd-8ff4-be5a52bc3903.json and https://artists.proofprofile.net/proofs/artist/bb0992b9-d83c-4bcd-8ff4-be5a52bc3903.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:10:41Z
  text: {"copyright_id":"0xae01025216f951e9a91cc9db51cdb21de45b52b1d0f04f8eb0ec2935c7b9a4d8","name":"Mamiko Uchiwa","registered_at":"2026-06-20T16:54:00Z","symbol":"NIM1659283","token_address":"0xae7a285c76a718fe040605d257d7af73a697ab3e","type":"artist","uuid":"bb0992b9-d83c-4bcd-8ff4-be5a52bc3903"}