Jef Jon Sin
type: MusicGroup
popularity: 3
followers: 460
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7f9a324a0943afb98578f407697b6d75368be157ca29582ccb71bea390fa60e0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/98451f3a-a477-48f5-8f5a-1f2cdc1fabca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/98451f3a-a477-48f5-8f5a-1f2cdc1fabca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/98451f3a-a477-48f5-8f5a-1f2cdc1fabca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7f9a324a0943afb98578f407697b6d75368be157ca29582ccb71bea390fa60e0","name":"Jef Jon Sin","registered_at":"2026-06-17T18:45:55Z","symbol":"NIM1485602","token_address":"0x540476b046ecb90b17dd485a721b4fe7e43a88bd","type":"artist","uuid":"98451f3a-a477-48f5-8f5a-1f2cdc1fabca"}
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 0x7f9a324a0943afb98578f407697b6d75368be157ca29582ccb71bea390fa60e0. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98451f3a-a477-48f5-8f5a-1f2cdc1fabca.json and https://artists.proofprofile.net/proofs/artist/98451f3a-a477-48f5-8f5a-1f2cdc1fabca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x7f9a324a0943afb98578f407697b6d75368be157ca29582ccb71bea390fa60e0","name":"Jef Jon Sin","registered_at":"2026-06-17T18:45:55Z","symbol":"NIM1485602","token_address":"0x540476b046ecb90b17dd485a721b4fe7e43a88bd","type":"artist","uuid":"98451f3a-a477-48f5-8f5a-1f2cdc1fabca"}
album: Nameknown
  type: MusicAlbum
  date published: 2012-12-11
album: Strip
  type: MusicAlbum
  date published: 2014-05-10
  track: Strip
    type: MusicRecording
    duration: PT3M36S
    duration ms: 216214
    explicit: true
    by artist: Jef Jon Sin
    in album: Strip
      type: MusicAlbum
      date published: 2014-05-10
    isrc code: USHM21405847
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T15:32:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x70c01e5ac315fd6d427547256de9e5491204a23345bc131952cf4f15525a4e50
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958761
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958761
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21405847
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T18:35:20Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c01e5ac315fd6d427547256de9e5491204a23345bc131952cf4f15525a4e50. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:35:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21405847.
      date published: 2026-07-19T18:35:20Z
    audio: Strip
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 82.012
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.693
      additional property: Energy
        type: PropertyValue
        value: 0.605
      additional property: Speechiness
        type: PropertyValue
        value: 0.288
      additional property: Acousticness
        type: PropertyValue
        value: 0.008
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.104
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.254
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.157
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Implied It (feat. Joe Major)
  type: MusicAlbum
  date published: 2015-07-03
album: Irene
  type: MusicAlbum
  date published: 2016-04-12
album: River Run
  type: MusicAlbum
  date published: 2017
album: A Portrait of Rudy
  type: MusicAlbum
  date published: 2018-01-02