Yan Jun
type: MusicGroup
genre: experimental
description: Yan Jun ( 200s–240s), courtesy name Mancai, was an official of the state of Eastern Wu during the Three Kingdoms period of China. Life Yan Jun was from Pengcheng (), which is present-day Xuzhou, Jian
popularity: 6
followers: 489
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xffd4e584f95c3fa52e984354c136624a979aa504cc2ad350ff07880d5943f517
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953841
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953841
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/000be9ac-fe87-4d8a-bc8c-6606d1129120.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/000be9ac-fe87-4d8a-bc8c-6606d1129120.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/000be9ac-fe87-4d8a-bc8c-6606d1129120
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:20:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xffd4e584f95c3fa52e984354c136624a979aa504cc2ad350ff07880d5943f517","name":"Yan Jun","registered_at":"2026-06-15T13:38:55Z","symbol":"NIM0725304","token_address":"0x4a573e9fe36fc1d446c4a3f8fbf80ee02c204826","type":"artist","uuid":"000be9ac-fe87-4d8a-bc8c-6606d1129120"}
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 0xffd4e584f95c3fa52e984354c136624a979aa504cc2ad350ff07880d5943f517. Chain 2 (Bitcoin): anchored in block 953841 (2026-06-15T22:20:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/000be9ac-fe87-4d8a-bc8c-6606d1129120.json and https://artists.proofprofile.net/proofs/artist/000be9ac-fe87-4d8a-bc8c-6606d1129120.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:20:26Z
  text: {"copyright_id":"0xffd4e584f95c3fa52e984354c136624a979aa504cc2ad350ff07880d5943f517","name":"Yan Jun","registered_at":"2026-06-15T13:38:55Z","symbol":"NIM0725304","token_address":"0x4a573e9fe36fc1d446c4a3f8fbf80ee02c204826","type":"artist","uuid":"000be9ac-fe87-4d8a-bc8c-6606d1129120"}
album: Hello, Mad Dog is out of Home (allergy to Consciousness Version)
  type: MusicAlbum
  date published: 2010-04-12
album: From Audience
  type: MusicAlbum
  date published: 2018-06-29
album: Unconditional Love
  type: MusicAlbum
  date published: 2018-06-29