Yajin
type: MusicGroup
description: Yajin (), also known as shijian er (), is a type of Chinese accessory which is placed at the lapels of Chinese clothing (robes and jackets); they would typically hanged down on the right side (sometim
popularity: 14
followers: 779
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x466c2df92d9bd312436d294a73ac64f95ef72c9c71d9d9e46474c5e4f857ac98
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953662
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953662
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/56d0398b-b480-4a62-9532-83354cef256e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/56d0398b-b480-4a62-9532-83354cef256e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/56d0398b-b480-4a62-9532-83354cef256e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T17:28:39Z
additional property: OTSCanonicalRecord
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 0x466c2df92d9bd312436d294a73ac64f95ef72c9c71d9d9e46474c5e4f857ac98. Chain 2 (Bitcoin): anchored in block 953662 (2026-06-14T17:28:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56d0398b-b480-4a62-9532-83354cef256e.json and https://artists.proofprofile.net/proofs/artist/56d0398b-b480-4a62-9532-83354cef256e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T17:28:39Z
album: Orchid
  type: MusicAlbum
  date published: 2019-01-18
album: Unison
  type: MusicAlbum
  date published: 2019-05-24
album: Discharge
  type: MusicAlbum
  date published: 2019-08-30
album: Breathing Water
  type: MusicAlbum
  date published: 2019-11-15
album: Blade Eve
  type: MusicAlbum
  date published: 2020-01-17
album: Inner Us
  type: MusicAlbum
  date published: 2020-04-16
album: Audio Fallout
  type: MusicAlbum
  date published: 2020-07-02
album: Park
  type: MusicAlbum
  date published: 2021-01-07
album: Basic Fantasy
  type: MusicAlbum
  date published: 2021-04-22
album: Sanity
  type: MusicAlbum
  date published: 2022-04-07
album: Knuckleball
  type: MusicAlbum
  date published: 2022-06-02
album: Redeem
  type: MusicAlbum
  date published: 2022-10-06
album: den
  type: MusicAlbum
  date published: 2023-01-27
album: nean
  type: MusicAlbum
  date published: 2023-11-24
album: untied
  type: MusicAlbum
  date published: 2024-11-08
  track: untied
    type: MusicRecording
    duration: PT2M37S
    duration ms: 157738
    explicit: false
    by artist: Yajin
    in album: untied
      type: MusicAlbum
      date published: 2024-11-08
    isrc code: QZWFS2473842
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T12:00:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x32416749d6bd75dc152a96c7aa8557afd78ea57faa07d2d337335756ad8ad0ed
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958410
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958410
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2473842
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T12:18:07Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x32416749d6bd75dc152a96c7aa8557afd78ea57faa07d2d337335756ad8ad0ed. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2473842 — a six-check JSON result.
      date published: 2026-07-17T12:18:07Z
    audio: untied
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 70.786
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.672
      additional property: Energy
        type: PropertyValue
        value: 0.315
      additional property: Speechiness
        type: PropertyValue
        value: 0.08
      additional property: Acousticness
        type: PropertyValue
        value: 0.576
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.514
      additional property: Liveness
        type: PropertyValue
        value: 0.11
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.15
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.742
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: guardians
  type: MusicAlbum
  date published: 2025-01-31
album: hover never land
  type: MusicAlbum
  date published: 2025-05-30