Hard case
type: MusicGroup
popularity: 2
followers: 86
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcfff0d6a57ff49a44f7f362ea9753613f02574b2862736152b756f7b02ef998d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a40d7510-3c33-4b47-94e4-947e5df7da95.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a40d7510-3c33-4b47-94e4-947e5df7da95.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a40d7510-3c33-4b47-94e4-947e5df7da95
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcfff0d6a57ff49a44f7f362ea9753613f02574b2862736152b756f7b02ef998d","name":"Hard case","registered_at":"2026-06-20T06:36:10Z","symbol":"NIM1542352","token_address":"0x3402e911cf39ad3f82c1d67d904935448251e907","type":"artist","uuid":"a40d7510-3c33-4b47-94e4-947e5df7da95"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfff0d6a57ff49a44f7f362ea9753613f02574b2862736152b756f7b02ef998d. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a40d7510-3c33-4b47-94e4-947e5df7da95.json and https://artists.proofprofile.net/proofs/artist/a40d7510-3c33-4b47-94e4-947e5df7da95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xcfff0d6a57ff49a44f7f362ea9753613f02574b2862736152b756f7b02ef998d","name":"Hard case","registered_at":"2026-06-20T06:36:10Z","symbol":"NIM1542352","token_address":"0x3402e911cf39ad3f82c1d67d904935448251e907","type":"artist","uuid":"a40d7510-3c33-4b47-94e4-947e5df7da95"}
album: Без увечий
  type: MusicAlbum
  date published: 2023-10-05
album: Monument
  type: MusicAlbum
  date published: 2023-10-17
album: Bluezzz
  type: MusicAlbum
  date published: 2023-11-02
album: Hopeless Attempts at Conversation with Those Who Are Unable to Understand
  type: MusicAlbum
  date published: 2023-12-23
album: Emo Distance: Slowly Death Near Dried Up Oceans
  type: MusicAlbum
  date published: 2024-02-29
  track: Демон
    type: MusicRecording
    duration: PT3M7S
    duration ms: 187639
    explicit: true
    by artist: Hard case
    in album: Emo Distance: Slowly Death Near Dried Up Oceans
      type: MusicAlbum
      date published: 2024-02-29
    isrc code: RUA1H2469312
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T04:17:07+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7f89cc80f577322d18ccbfdff0469a3a32ba683307e08ae2d167703edb5ca481
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2469312
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f89cc80f577322d18ccbfdff0469a3a32ba683307e08ae2d167703edb5ca481. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUA1H2469312.
      date published: 2026-07-05T10:01:46Z
    audio: Демон
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 123.04
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.905
      additional property: Energy
        type: PropertyValue
        value: 0.512
      additional property: Speechiness
        type: PropertyValue
        value: 0.215
      additional property: Acousticness
        type: PropertyValue
        value: 0.11
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.079
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.377
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Emo Distance: a Place with No Words
  type: MusicAlbum
  date published: 2024-03-07
album: Time to Die
  type: MusicAlbum
  date published: 2024-06-28
album: Без названия
  type: MusicAlbum
  date published: 2025-01-30
album: Без названия
  type: MusicAlbum
  date published: 2025-02-14