真田
type: MusicGroup
popularity: 2
followers: 32
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x218dc84c6693aad5d0c8a39b6c5b25cb8141e8ff09f20b5d94c934b84ef6d105
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/95e7af44-67b2-4c5c-8a25-d597bfb32d4c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/95e7af44-67b2-4c5c-8a25-d597bfb32d4c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/95e7af44-67b2-4c5c-8a25-d597bfb32d4c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x218dc84c6693aad5d0c8a39b6c5b25cb8141e8ff09f20b5d94c934b84ef6d105","name":"真田","registered_at":"2026-06-17T17:57:08Z","symbol":"NIM1473967","token_address":"0x2eeaf44eb3b7b9b0c3d5ef05d73c133b6012536b","type":"artist","uuid":"95e7af44-67b2-4c5c-8a25-d597bfb32d4c"}
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 0x218dc84c6693aad5d0c8a39b6c5b25cb8141e8ff09f20b5d94c934b84ef6d105. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95e7af44-67b2-4c5c-8a25-d597bfb32d4c.json and https://artists.proofprofile.net/proofs/artist/95e7af44-67b2-4c5c-8a25-d597bfb32d4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x218dc84c6693aad5d0c8a39b6c5b25cb8141e8ff09f20b5d94c934b84ef6d105","name":"真田","registered_at":"2026-06-17T17:57:08Z","symbol":"NIM1473967","token_address":"0x2eeaf44eb3b7b9b0c3d5ef05d73c133b6012536b","type":"artist","uuid":"95e7af44-67b2-4c5c-8a25-d597bfb32d4c"}
album: 七月の夜空
  type: MusicAlbum
  date published: 2023-07-07
album: NO, NO, MOUMANTAI！！
  type: MusicAlbum
  date published: 2024-04-29
album: 可愛くてごめん (feat. HoneyWorks & かぴ) [Cover]
  type: MusicAlbum
  date published: 2024-06-10
album: one night
  type: MusicAlbum
  date published: 2025-07-07