Jang Sehyun
type: MusicGroup
genre: k-rock
genre: shoegaze
popularity: 2
followers: 115
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1caf955b1efb9fb2a2712b10579eb6cf4dbd27e28b9cb73f088c5b390eac88a0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f65f70ec-c021-446d-aa4e-cdeb85a08da6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f65f70ec-c021-446d-aa4e-cdeb85a08da6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f65f70ec-c021-446d-aa4e-cdeb85a08da6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1caf955b1efb9fb2a2712b10579eb6cf4dbd27e28b9cb73f088c5b390eac88a0","name":"Jang Sehyun","registered_at":"2026-06-21T15:15:46Z","symbol":"NIM1957932","token_address":"0x7d369962cc5a03edf21dae6d3ea9e37e2df3ab7b","type":"artist","uuid":"f65f70ec-c021-446d-aa4e-cdeb85a08da6"}
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 0x1caf955b1efb9fb2a2712b10579eb6cf4dbd27e28b9cb73f088c5b390eac88a0. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f65f70ec-c021-446d-aa4e-cdeb85a08da6.json and https://artists.proofprofile.net/proofs/artist/f65f70ec-c021-446d-aa4e-cdeb85a08da6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x1caf955b1efb9fb2a2712b10579eb6cf4dbd27e28b9cb73f088c5b390eac88a0","name":"Jang Sehyun","registered_at":"2026-06-21T15:15:46Z","symbol":"NIM1957932","token_address":"0x7d369962cc5a03edf21dae6d3ea9e37e2df3ab7b","type":"artist","uuid":"f65f70ec-c021-446d-aa4e-cdeb85a08da6"}
album: Dream
  type: MusicAlbum
  date published: 2023-03-30
album: 이유는 없다지만
  type: MusicAlbum
  date published: 2023-08-28
album: How to grow a dream that we've forgotten
  type: MusicAlbum
  date published: 2024-01-31
album: 비워내기 (Spill the tea)
  type: MusicAlbum
  date published: 2024-05-25
album: Summer - Gazing
  type: MusicAlbum
  date published: 2024-08-20
album: How to live on earth
  type: MusicAlbum
  date published: 2024-11-28
album: Overbreathing
  type: MusicAlbum
  date published: 2025-02-18
album: Blue As It Is
  type: MusicAlbum
  date published: 2025-07-09