真田幸村（CV:山下大輝）
type: MusicGroup
genre: anime
popularity: 9
followers: 246
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb4dc99b1644088db96b54b320493ca261d050ace72a132dc1338ab878a38976a
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/248f6f06-4fef-49cb-be5b-53a7d7c25737.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/248f6f06-4fef-49cb-be5b-53a7d7c25737.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/248f6f06-4fef-49cb-be5b-53a7d7c25737
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb4dc99b1644088db96b54b320493ca261d050ace72a132dc1338ab878a38976a","name":"真田幸村（CV:山下大輝）","registered_at":"2026-06-16T02:35:04Z","symbol":"NIM0910409","token_address":"0xef14e39c91fdf1a301137273b7167251905b8f6e","type":"artist","uuid":"248f6f06-4fef-49cb-be5b-53a7d7c25737"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dc99b1644088db96b54b320493ca261d050ace72a132dc1338ab878a38976a. 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/248f6f06-4fef-49cb-be5b-53a7d7c25737.json and https://artists.proofprofile.net/proofs/artist/248f6f06-4fef-49cb-be5b-53a7d7c25737.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xb4dc99b1644088db96b54b320493ca261d050ace72a132dc1338ab878a38976a","name":"真田幸村（CV:山下大輝）","registered_at":"2026-06-16T02:35:04Z","symbol":"NIM0910409","token_address":"0xef14e39c91fdf1a301137273b7167251905b8f6e","type":"artist","uuid":"248f6f06-4fef-49cb-be5b-53a7d7c25737"}
album: TVアニメ『戦刻ナイトブラッド』真田軍テーマソング（TVサイズ）
  type: MusicAlbum
  date published: 2017-10-25
album: 『戦刻ナイトブラッド』真田軍テーマソング「Moonlight Beam」
  type: MusicAlbum
  date published: 2017-11-15