NCT 2018
type: MusicGroup
genre: k-pop
popularity: 31
followers: 15028
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3b512246a346c942a20fcc4cc19fae831060da6029c2987d0a4a950752fdde8c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0229e13e-90b5-4976-99d5-9e60cfcfdda8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0229e13e-90b5-4976-99d5-9e60cfcfdda8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0229e13e-90b5-4976-99d5-9e60cfcfdda8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3b512246a346c942a20fcc4cc19fae831060da6029c2987d0a4a950752fdde8c","name":"NCT 2018","registered_at":"2026-06-11T10:44:27Z","symbol":"NIM0003259","token_address":"0x2d09988410035c98534e7e3a568a9ef385898f84","type":"artist","uuid":"0229e13e-90b5-4976-99d5-9e60cfcfdda8"}
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 0x3b512246a346c942a20fcc4cc19fae831060da6029c2987d0a4a950752fdde8c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0229e13e-90b5-4976-99d5-9e60cfcfdda8.json and https://artists.proofprofile.net/proofs/artist/0229e13e-90b5-4976-99d5-9e60cfcfdda8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x3b512246a346c942a20fcc4cc19fae831060da6029c2987d0a4a950752fdde8c","name":"NCT 2018","registered_at":"2026-06-11T10:44:27Z","symbol":"NIM0003259","token_address":"0x2d09988410035c98534e7e3a568a9ef385898f84","type":"artist","uuid":"0229e13e-90b5-4976-99d5-9e60cfcfdda8"}
track: Black on Black

Black on Black
type: MusicRecording
duration: PT3M17S
duration ms: 197980
explicit: false
by artist: NCT
by artist: NCT 2018
in album: NCT 2018 EMPATHY
  type: MusicAlbum
  date published: 2018-03-14
genre: k-pop
genre: k-pop-boy-group
isrc code: KRA301800105
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T09:39:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x61c06b9f91c6d29848cb04cd5c3a2b9809e63c649b9a4fc4ce9af4638706d5db
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA301800105
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 953513
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T12:47:07+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c06b9f91c6d29848cb04cd5c3a2b9809e63c649b9a4fc4ce9af4638706d5db. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRA301800105.
  date published: 2026-06-13T15:41:10Z
audio: Black on Black
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.11
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.523
  additional property: Energy
    type: PropertyValue
    value: 0.864
  additional property: Speechiness
    type: PropertyValue
    value: 0.359
  additional property: Acousticness
    type: PropertyValue
    value: 0.106
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.067
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.247
  additional property: Loudness (dB)
    type: PropertyValue
    value: -4.746
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor