해피싱어 프로젝트
type: MusicGroup
popularity: 3
followers: 56
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x28e7cb73920af840dfff1a4dbe5f65a49c04d93de653ea891a043d9931ce409b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c04d58e7-1ae7-4275-a539-da2d8bd0d89e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c04d58e7-1ae7-4275-a539-da2d8bd0d89e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c04d58e7-1ae7-4275-a539-da2d8bd0d89e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x28e7cb73920af840dfff1a4dbe5f65a49c04d93de653ea891a043d9931ce409b","name":"해피싱어 프로젝트","registered_at":"2026-06-20T19:07:18Z","symbol":"NIM1685693","token_address":"0x3a428436d6b230b2ba2bcbc18b5e353d67146078","type":"artist","uuid":"c04d58e7-1ae7-4275-a539-da2d8bd0d89e"}
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 0x28e7cb73920af840dfff1a4dbe5f65a49c04d93de653ea891a043d9931ce409b. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c04d58e7-1ae7-4275-a539-da2d8bd0d89e.json and https://artists.proofprofile.net/proofs/artist/c04d58e7-1ae7-4275-a539-da2d8bd0d89e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0x28e7cb73920af840dfff1a4dbe5f65a49c04d93de653ea891a043d9931ce409b","name":"해피싱어 프로젝트","registered_at":"2026-06-20T19:07:18Z","symbol":"NIM1685693","token_address":"0x3a428436d6b230b2ba2bcbc18b5e353d67146078","type":"artist","uuid":"c04d58e7-1ae7-4275-a539-da2d8bd0d89e"}
album: 해피싱어 프로젝트 대작 막걸리 발표회
  type: MusicAlbum
  date published: 2011-04-01
album: 서쪽하늘/나같은건 없는건가요
  type: MusicAlbum
  date published: 2013-03-14
  track: 서쪽하늘(청연OST)(Sad Ver.)
    type: MusicRecording
    duration: PT3M58S
    duration ms: 238288
    explicit: false
    by artist: 해피싱어 프로젝트
    in album: 서쪽하늘/나같은건 없는건가요
      type: MusicAlbum
      date published: 2013-03-14
    isrc code: KRRAS1648533
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T19:10:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x409c3e03bf3a0c7c609253ef075675edaa2164fb41174118b5c55c71b3c750da
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRRAS1648533
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0x409c3e03bf3a0c7c609253ef075675edaa2164fb41174118b5c55c71b3c750da. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/KRRAS1648533.
      date published: 2026-07-05T01:12:41Z
    audio: 서쪽하늘(청연OST)(Sad Ver.)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.591
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.557
      additional property: Energy
        type: PropertyValue
        value: 0.402
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.8
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.115
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.162
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.212
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 나가거든/소리쳐/인기발라드베스트
  type: MusicAlbum
  date published: 2013-03-21