Rin Usami
type: MusicGroup
description: Rin Usami (宇佐見 りん, Hepburn: Usami Rin, born 16 May 1999) is a Japanese novelist. Career Usami was born in Numazu, Shizuoka, and raised in Kanagawa Prefecture. For her first work Kaka (かか) she was a
popularity: 2
followers: 15
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8ac7d43b7343530e38d731e699971433b9d1917f1a5178b6d1772e5285470cea
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5ca200bd-043a-45d0-8f12-1e6dcdaa2741.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5ca200bd-043a-45d0-8f12-1e6dcdaa2741.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5ca200bd-043a-45d0-8f12-1e6dcdaa2741
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8ac7d43b7343530e38d731e699971433b9d1917f1a5178b6d1772e5285470cea","name":"Rin Usami","registered_at":"2026-06-16T21:47:28Z","symbol":"NIM1185445","token_address":"0x1a051cdec9f6e5d7f4338f22f32ae8b5c02c7810","type":"artist","uuid":"5ca200bd-043a-45d0-8f12-1e6dcdaa2741"}
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 0x8ac7d43b7343530e38d731e699971433b9d1917f1a5178b6d1772e5285470cea. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ca200bd-043a-45d0-8f12-1e6dcdaa2741.json and https://artists.proofprofile.net/proofs/artist/5ca200bd-043a-45d0-8f12-1e6dcdaa2741.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x8ac7d43b7343530e38d731e699971433b9d1917f1a5178b6d1772e5285470cea","name":"Rin Usami","registered_at":"2026-06-16T21:47:28Z","symbol":"NIM1185445","token_address":"0x1a051cdec9f6e5d7f4338f22f32ae8b5c02c7810","type":"artist","uuid":"5ca200bd-043a-45d0-8f12-1e6dcdaa2741"}
album: Idol in Flammen (Ungekürzt)
  type: MusicAlbum
  date published: 2023-06-07