Black Hole
type: MusicGroup
genre: k-ballad
genre: k-rock
genre: melodic metal
genre: power metal
description: A black hole is an astronomical body so compact that its gravity prevents anything, including light, from escaping. Albert Einstein's theory of general relativity, which describes gravitation as the c
popularity: 7
followers: 689
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x256e89488bc959c60e7c763fffbcb36da8812e83866e146e27db83c8cf434604
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/729ec5f2-e74c-42c6-b6ed-d2ac74aff8d4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/729ec5f2-e74c-42c6-b6ed-d2ac74aff8d4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/729ec5f2-e74c-42c6-b6ed-d2ac74aff8d4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x256e89488bc959c60e7c763fffbcb36da8812e83866e146e27db83c8cf434604","name":"Black Hole","registered_at":"2026-06-17T05:37:42Z","symbol":"NIM1297658","token_address":"0xab26eda5793fab8432e8216a057c0ac56ed9c415","type":"artist","uuid":"729ec5f2-e74c-42c6-b6ed-d2ac74aff8d4"}
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 0x256e89488bc959c60e7c763fffbcb36da8812e83866e146e27db83c8cf434604. 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/729ec5f2-e74c-42c6-b6ed-d2ac74aff8d4.json and https://artists.proofprofile.net/proofs/artist/729ec5f2-e74c-42c6-b6ed-d2ac74aff8d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x256e89488bc959c60e7c763fffbcb36da8812e83866e146e27db83c8cf434604","name":"Black Hole","registered_at":"2026-06-17T05:37:42Z","symbol":"NIM1297658","token_address":"0xab26eda5793fab8432e8216a057c0ac56ed9c415","type":"artist","uuid":"729ec5f2-e74c-42c6-b6ed-d2ac74aff8d4"}
album: miracle
  type: MusicAlbum
  date published: 1989-02-07
  track: 깊은 밤의 서정곡
    type: MusicRecording
    duration: PT5M31S
    duration ms: 331826
    explicit: false
    by artist: Black Hole
    in album: miracle
      type: MusicAlbum
      date published: 1989-02-07
    genre: k-ballad
    genre: k-rock
    genre: melodic metal
    genre: power metal
    isrc code: KSA012100497
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T10:59:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x46096d3239aa24ba5f1668d3165c62a92a0c75d51c6360a6472e4ef3b0129ff8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSA012100497
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0x46096d3239aa24ba5f1668d3165c62a92a0c75d51c6360a6472e4ef3b0129ff8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KSA012100497.
      date published: 2026-07-05T18:48:28Z
    audio: 깊은 밤의 서정곡
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 76.188
      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: 0.41
      additional property: Energy
        type: PropertyValue
        value: 0.411
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.297
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.075
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.161
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.499
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Black Hole
  type: MusicAlbum
  date published: 2005-04-01
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2022-12-19
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  type: MusicAlbum
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