Cityboy from Seoul
type: MusicGroup
popularity: 19
followers: 93
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc7eaad22be47fc7f7c5ace28916182228bbc11ceda1e77fa653ae2bc2882c8a2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953654
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953654
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/49f994db-500e-4bc5-9c06-3ff46de5f3f5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/49f994db-500e-4bc5-9c06-3ff46de5f3f5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/49f994db-500e-4bc5-9c06-3ff46de5f3f5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T16:26:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc7eaad22be47fc7f7c5ace28916182228bbc11ceda1e77fa653ae2bc2882c8a2","name":"Cityboy from Seoul","registered_at":"2026-06-14T12:14:37Z","symbol":"NIM0449718","token_address":"0x45af2f71bad2e82d111360d720e2b45cc9a0f797","type":"artist","uuid":"49f994db-500e-4bc5-9c06-3ff46de5f3f5"}
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 0xc7eaad22be47fc7f7c5ace28916182228bbc11ceda1e77fa653ae2bc2882c8a2. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49f994db-500e-4bc5-9c06-3ff46de5f3f5.json and https://artists.proofprofile.net/proofs/artist/49f994db-500e-4bc5-9c06-3ff46de5f3f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T16:26:51Z
  text: {"copyright_id":"0xc7eaad22be47fc7f7c5ace28916182228bbc11ceda1e77fa653ae2bc2882c8a2","name":"Cityboy from Seoul","registered_at":"2026-06-14T12:14:37Z","symbol":"NIM0449718","token_address":"0x45af2f71bad2e82d111360d720e2b45cc9a0f797","type":"artist","uuid":"49f994db-500e-4bc5-9c06-3ff46de5f3f5"}
album: Back To The Rave
  type: MusicAlbum
  date published: 2020-06-19
album: Back to the Rave
  type: MusicAlbum
  date published: 2020-06-19
album: My guitar is not lonely
  type: MusicAlbum
  date published: 2020-08-14
album: BC0000
  type: MusicAlbum
  date published: 2025-03-19
album: BC0000 (DJ SHIKISAI DDC REMIX)
  type: MusicAlbum
  date published: 2025-04-21
album: BC0000 (Hideo Kobayashi Remix)
  type: MusicAlbum
  date published: 2025-05-12