Impromptu MC
type: MusicGroup
popularity: 6
followers: 120
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x82be819366b7fac35e6dc7cb8e9984bcc69462e8b1bdfdc71e98c17f1385dde1
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/a36ca446-645e-4121-9b15-29fc62f64b40.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a36ca446-645e-4121-9b15-29fc62f64b40.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a36ca446-645e-4121-9b15-29fc62f64b40
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x82be819366b7fac35e6dc7cb8e9984bcc69462e8b1bdfdc71e98c17f1385dde1","name":"Impromptu MC","registered_at":"2026-06-20T06:34:40Z","symbol":"NIM1542254","token_address":"0x81929bbf30b72b3bd4e4005c761047a1ca67c460","type":"artist","uuid":"a36ca446-645e-4121-9b15-29fc62f64b40"}
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 0x82be819366b7fac35e6dc7cb8e9984bcc69462e8b1bdfdc71e98c17f1385dde1. 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/a36ca446-645e-4121-9b15-29fc62f64b40.json and https://artists.proofprofile.net/proofs/artist/a36ca446-645e-4121-9b15-29fc62f64b40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x82be819366b7fac35e6dc7cb8e9984bcc69462e8b1bdfdc71e98c17f1385dde1","name":"Impromptu MC","registered_at":"2026-06-20T06:34:40Z","symbol":"NIM1542254","token_address":"0x81929bbf30b72b3bd4e4005c761047a1ca67c460","type":"artist","uuid":"a36ca446-645e-4121-9b15-29fc62f64b40"}
album: Rock Hard Foundation (100 Styles & Runnin')
  type: MusicAlbum
  date published: 2014-10-31
album: Breathe
  type: MusicAlbum
  date published: 2022-11-25
album: As Above, So Below
  type: MusicAlbum
  date published: 2023-06-02
album: Extempore
  type: MusicAlbum
  date published: 2023-08-11
album: Maverick
  type: MusicAlbum
  date published: 2024-05-17
album: FIVE SENSES
  type: MusicAlbum
  date published: 2024-07-19
album: OUT OF SIGHT
  type: MusicAlbum
  date published: 2024-09-22
album: Stab
  type: MusicAlbum
  date published: 2024-12-19
album: KNIGHTMARE
  type: MusicAlbum
  date published: 2025-01-17
album: IMPROMPTU
  type: MusicAlbum
  date published: 2025-06-06
  track: Unbreakable
    type: MusicRecording
    duration: PT2M47S
    duration ms: 167594
    explicit: true
    by artist: Impromptu MC
    in album: IMPROMPTU
      type: MusicAlbum
      date published: 2025-06-06
    isrc code: QZTAZ2530215
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T06:58:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe12cb38765741430c791848f6ef81bca6afb44414f2936e49c6c7a646eb8f33a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958842
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958842
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAZ2530215
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T07:48:27Z
    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 0xe12cb38765741430c791848f6ef81bca6afb44414f2936e49c6c7a646eb8f33a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZTAZ2530215.
      date published: 2026-07-20T07:48:27Z
    audio: Unbreakable
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 160.057
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.731
      additional property: Energy
        type: PropertyValue
        value: 0.794
      additional property: Speechiness
        type: PropertyValue
        value: 0.178
      additional property: Acousticness
        type: PropertyValue
        value: 0.085
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.252
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.773
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.679
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Never Fear
  type: MusicAlbum
  date published: 2025-06-25
album: On The Block Spitting
  type: MusicAlbum
  date published: 2025-07-11
album: On The Block Spitting
  type: MusicAlbum
  date published: 2025-08-01
album: As The Crow Flies
  type: MusicAlbum
  date published: 2025-10-17