Oh Seok Jun
type: MusicGroup
genre: k-ballad
popularity: 8
followers: 67
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc80881030affc600c8495b127b9bf4e51a0ef4838d5af472aa511e4bdf5cd7b9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ddc28079-e643-4ca9-bfb7-6de655864798.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ddc28079-e643-4ca9-bfb7-6de655864798.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ddc28079-e643-4ca9-bfb7-6de655864798
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc80881030affc600c8495b127b9bf4e51a0ef4838d5af472aa511e4bdf5cd7b9","name":"Oh Seok Jun","registered_at":"2026-06-21T05:43:14Z","symbol":"NIM1833910","token_address":"0xc57a92a202230965b636f1c063fdc28b35411267","type":"artist","uuid":"ddc28079-e643-4ca9-bfb7-6de655864798"}
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 0xc80881030affc600c8495b127b9bf4e51a0ef4838d5af472aa511e4bdf5cd7b9. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddc28079-e643-4ca9-bfb7-6de655864798.json and https://artists.proofprofile.net/proofs/artist/ddc28079-e643-4ca9-bfb7-6de655864798.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xc80881030affc600c8495b127b9bf4e51a0ef4838d5af472aa511e4bdf5cd7b9","name":"Oh Seok Jun","registered_at":"2026-06-21T05:43:14Z","symbol":"NIM1833910","token_address":"0xc57a92a202230965b636f1c063fdc28b35411267","type":"artist","uuid":"ddc28079-e643-4ca9-bfb7-6de655864798"}
album: Dream & Love
  type: MusicAlbum
  date published: 1988-11-10
album: It's still raining in my heart
  type: MusicAlbum
  date published: 1990-05-15
album: 변화
  type: MusicAlbum
  date published: 1991-09-01
album: Days
  type: MusicAlbum
  date published: 1993-04-01