Roco (CV: Atsuki Nakamura)
type: MusicGroup
popularity: 10
followers: 322
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd045fe44d2c49da3b6f8e8b6c27fe64b72936ef1541f05d00de85487237a61a2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953991
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953991
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2eebc513-7cbd-4d77-ae32-82a61d456753.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2eebc513-7cbd-4d77-ae32-82a61d456753.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2eebc513-7cbd-4d77-ae32-82a61d456753
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T18:47:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd045fe44d2c49da3b6f8e8b6c27fe64b72936ef1541f05d00de85487237a61a2","name":"Roco (CV: Atsuki Nakamura)","registered_at":"2026-06-16T05:52:45Z","symbol":"NIM0957629","token_address":"0x5b8d55a8d9a15b843021aede45af1a3e1ac78030","type":"artist","uuid":"2eebc513-7cbd-4d77-ae32-82a61d456753"}
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 0xd045fe44d2c49da3b6f8e8b6c27fe64b72936ef1541f05d00de85487237a61a2. 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/2eebc513-7cbd-4d77-ae32-82a61d456753.json and https://artists.proofprofile.net/proofs/artist/2eebc513-7cbd-4d77-ae32-82a61d456753.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xd045fe44d2c49da3b6f8e8b6c27fe64b72936ef1541f05d00de85487237a61a2","name":"Roco (CV: Atsuki Nakamura)","registered_at":"2026-06-16T05:52:45Z","symbol":"NIM0957629","token_address":"0x5b8d55a8d9a15b843021aede45af1a3e1ac78030","type":"artist","uuid":"2eebc513-7cbd-4d77-ae32-82a61d456753"}
album: THE IDOLM@STER MILLION THE@TER GENERATION 15 Jelly PoP Beans
  type: MusicAlbum
  date published: 2019-03-27