Blacksound
type: MusicGroup
genre: metalcore
popularity: 10
followers: 2876
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5170e4b773527d8fbaf118ce28b11539de539bed1c710ade4dd9d8fae347c1a5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953949
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953949
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b8ed08c-6098-414a-9377-d479dfde5c37.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b8ed08c-6098-414a-9377-d479dfde5c37.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1b8ed08c-6098-414a-9377-d479dfde5c37
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:28:01Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5170e4b773527d8fbaf118ce28b11539de539bed1c710ade4dd9d8fae347c1a5. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b8ed08c-6098-414a-9377-d479dfde5c37.json and https://artists.proofprofile.net/proofs/artist/1b8ed08c-6098-414a-9377-d479dfde5c37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
album: Forget
  type: MusicAlbum
  date published: 2019-05-30
album: Burden
  type: MusicAlbum
  date published: 2019-07-30
album: Mannequin
  type: MusicAlbum
  date published: 2020-02-21
album: Pathos
  type: MusicAlbum
  date published: 2020-03-27
album: Forget (Acoustic)
  type: MusicAlbum
  date published: 2021-05-28
album: Exit Motive
  type: MusicAlbum
  date published: 2021-06-25
album: Breathless
  type: MusicAlbum
  date published: 2021-09-10
album: ROSARY
  type: MusicAlbum
  date published: 2021-11-26
album: Breathless (Acoustic)
  type: MusicAlbum
  date published: 2022-04-15
album: Bleed Black
  type: MusicAlbum
  date published: 2022-08-26
album: Painted Tunnels
  type: MusicAlbum
  date published: 2022-10-28
album: ROSARY II
  type: MusicAlbum
  date published: 2023-07-28
album: The Flood
  type: MusicAlbum
  date published: 2025-06-20
  track: The Flood
    type: MusicRecording
    duration: PT3M54S
    duration ms: 234286
    explicit: true
    by artist: Blacksound
    in album: The Flood
      type: MusicAlbum
      date published: 2025-06-20
    genre: metalcore
    isrc code: QZRP52524254
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T05:25:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf50cb4d946abfba8104a72ac60b26cff542e1d63515f099ef59ca106df6bba0d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958832
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958832
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRP52524254
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T08:27:48Z
    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 0xf50cb4d946abfba8104a72ac60b26cff542e1d63515f099ef59ca106df6bba0d. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:27:48Z), 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/QZRP52524254.
      date published: 2026-07-20T08:27:48Z
    audio: The Flood
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 89.976
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.323
      additional property: Energy
        type: PropertyValue
        value: 0.974
      additional property: Speechiness
        type: PropertyValue
        value: 0.084
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.341
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.065
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.202
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: A Place With No Name
  type: MusicAlbum
  date published: 2025-09-19