ゆゆん
type: MusicGroup
genre: j-rock
genre: k-rock
popularity: 2
followers: 139
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x138bd96b4bbde0f89580ff65d34cc19b7982cdfa201f38b2b6e3997f48d20930
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953996
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953996
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/304b625f-929a-48f9-a1c8-7ab94a37bf88.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/304b625f-929a-48f9-a1c8-7ab94a37bf88.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/304b625f-929a-48f9-a1c8-7ab94a37bf88
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:04:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x138bd96b4bbde0f89580ff65d34cc19b7982cdfa201f38b2b6e3997f48d20930","name":"ゆゆん","registered_at":"2026-06-16T06:26:58Z","symbol":"NIM0965799","token_address":"0x3332115bdd0ee8e0551ac9a7ae518b70408aa78f","type":"artist","uuid":"304b625f-929a-48f9-a1c8-7ab94a37bf88"}
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 0x138bd96b4bbde0f89580ff65d34cc19b7982cdfa201f38b2b6e3997f48d20930. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/304b625f-929a-48f9-a1c8-7ab94a37bf88.json and https://artists.proofprofile.net/proofs/artist/304b625f-929a-48f9-a1c8-7ab94a37bf88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:04:35Z
  text: {"copyright_id":"0x138bd96b4bbde0f89580ff65d34cc19b7982cdfa201f38b2b6e3997f48d20930","name":"ゆゆん","registered_at":"2026-06-16T06:26:58Z","symbol":"NIM0965799","token_address":"0x3332115bdd0ee8e0551ac9a7ae518b70408aa78f","type":"artist","uuid":"304b625f-929a-48f9-a1c8-7ab94a37bf88"}
album: カーテンコール
  type: MusicAlbum
  date published: 2015-12-16