QBA
type: MusicGroup
description: REDIRECTQBA (disambiguation)
popularity: 2
followers: 83
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf403f976cf06f0f9b68c4af238b2dd9217343af7c337dd7a8ed70948c6fc4123
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4a00d5bd-1ae5-4dbc-b9ee-da7e3ef3c92a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4a00d5bd-1ae5-4dbc-b9ee-da7e3ef3c92a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4a00d5bd-1ae5-4dbc-b9ee-da7e3ef3c92a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
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 0xf403f976cf06f0f9b68c4af238b2dd9217343af7c337dd7a8ed70948c6fc4123. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a00d5bd-1ae5-4dbc-b9ee-da7e3ef3c92a.json and https://artists.proofprofile.net/proofs/artist/4a00d5bd-1ae5-4dbc-b9ee-da7e3ef3c92a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
album: Piniata
  type: MusicAlbum
  date published: 2022-04-14
album: Dubaj
  type: MusicAlbum
  date published: 2022-04-29
album: Lalala
  type: MusicAlbum
  date published: 2023-01-16
album: Tercet
  type: MusicAlbum
  date published: 2024-01-28
album: Asap Rocky
  type: MusicAlbum
  date published: 2024-02-15
album: Sięgam Gwiazd
  type: MusicAlbum
  date published: 2024-04-21
album: Nigdy
  type: MusicAlbum
  date published: 2024-10-31
album: Fake
  type: MusicAlbum
  date published: 2024-12-19
album: Bohater
  type: MusicAlbum
  date published: 2025-01-17
album: Na Cały Blok
  type: MusicAlbum
  date published: 2025-06-05
  track: Na Cały Blok
    type: MusicRecording
    duration: PT2M24S
    duration ms: 144018
    explicit: false
    by artist: QBA
    in album: Na Cały Blok
      type: MusicAlbum
      date published: 2025-06-05
    isrc code: PLC062528154
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T07:06:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9cd7c2d4717118c792bafa5b4407502fc55614624676f45701fdd9d4b734d683
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956476
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956476
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062528154
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T09:04:44Z
    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 0x9cd7c2d4717118c792bafa5b4407502fc55614624676f45701fdd9d4b734d683. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLC062528154.
      date published: 2026-07-03T09:04:44Z
    audio: Na Cały Blok
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 159.959
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.491
      additional property: Energy
        type: PropertyValue
        value: 0.543
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.154
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.118
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.058
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.514
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Out Of My Life
  type: MusicAlbum
  date published: 2025-10-30