Oh Heejung
type: MusicGroup
genre: electropop
popularity: 2
followers: 263
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x75468b334fbc46a550e9da2f03641d3167cca004f0482402b7ca34f3f1e1e34a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6e5128af-4995-42b1-99e4-d6c53a078933.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6e5128af-4995-42b1-99e4-d6c53a078933.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6e5128af-4995-42b1-99e4-d6c53a078933
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x75468b334fbc46a550e9da2f03641d3167cca004f0482402b7ca34f3f1e1e34a","name":"Oh Heejung","registered_at":"2026-06-17T04:03:10Z","symbol":"NIM1275090","token_address":"0x1a70d1b2d6ea75e0a4773019c0bfdc09d512c81f","type":"artist","uuid":"6e5128af-4995-42b1-99e4-d6c53a078933"}
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 0x75468b334fbc46a550e9da2f03641d3167cca004f0482402b7ca34f3f1e1e34a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e5128af-4995-42b1-99e4-d6c53a078933.json and https://artists.proofprofile.net/proofs/artist/6e5128af-4995-42b1-99e4-d6c53a078933.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x75468b334fbc46a550e9da2f03641d3167cca004f0482402b7ca34f3f1e1e34a","name":"Oh Heejung","registered_at":"2026-06-17T04:03:10Z","symbol":"NIM1275090","token_address":"0x1a70d1b2d6ea75e0a4773019c0bfdc09d512c81f","type":"artist","uuid":"6e5128af-4995-42b1-99e4-d6c53a078933"}
album: Yop
  type: MusicAlbum
  date published: 2019-04-01
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  date published: 2020-11-09
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  type: MusicAlbum
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