justjacub.
type: MusicGroup
popularity: 4
followers: 44
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x62f98caf4807ae8665dcc4cd3b8f3c6594338adc40df8a56781a5076cb0306cc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954650
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954650
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d98f5f58-12cd-4adc-ba63-28b1779d6baf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d98f5f58-12cd-4adc-ba63-28b1779d6baf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d98f5f58-12cd-4adc-ba63-28b1779d6baf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:51:12Z
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 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 0x62f98caf4807ae8665dcc4cd3b8f3c6594338adc40df8a56781a5076cb0306cc. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d98f5f58-12cd-4adc-ba63-28b1779d6baf.json and https://artists.proofprofile.net/proofs/artist/d98f5f58-12cd-4adc-ba63-28b1779d6baf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:51:12Z
album: Dead roses
  type: MusicAlbum
  date published: 2018-10-13
album: Play me
  type: MusicAlbum
  date published: 2019-01-19
album: Home
  type: MusicAlbum
  date published: 2019-10-26
album: Peace of mind
  type: MusicAlbum
  date published: 2019-12-05
album: Understand me
  type: MusicAlbum
  date published: 2020-01-20
album: Miss me
  type: MusicAlbum
  date published: 2020-01-20
album: Maybe
  type: MusicAlbum
  date published: 2020-01-20
album: Forever interlude
  type: MusicAlbum
  date published: 2021-08-24
album: Friends
  type: MusicAlbum
  date published: 2021-09-05
album: Things will be fine
  type: MusicAlbum
  date published: 2021-09-10
album: Life is precious
  type: MusicAlbum
  date published: 2021-09-20
album: FRIENDLY
  type: MusicAlbum
  date published: 2021-10-15
album: It's your night <3
  type: MusicAlbum
  date published: 2021-11-23
album: Fallin in luv
  type: MusicAlbum
  date published: 2021-12-17
album: Bright lights
  type: MusicAlbum
  date published: 2022-03-18
album: Hypnotizing
  type: MusicAlbum
  date published: 2022-04-14
album: Forever yours
  type: MusicAlbum
  date published: 2022-08-11
album: DISTANCE
  type: MusicAlbum
  date published: 2023-08-16
album: LIAR
  type: MusicAlbum
  date published: 2023-08-23
album: BLAH BLAH (FREESTYLE)
  type: MusicAlbum
  date published: 2023-09-17
album: Till the morning
  type: MusicAlbum
  date published: 2023-11-25
album: SO LONELY
  type: MusicAlbum
  date published: 2024-04-06
album: BE ON ME
  type: MusicAlbum
  date published: 2024-04-24
album: BACKSEAT
  type: MusicAlbum
  date published: 2024-05-24
album: Float my boat <3
  type: MusicAlbum
  date published: 2024-06-18
album: MAMA
  type: MusicAlbum
  date published: 2024-07-31
album: listen when you need to LOCK IN
  type: MusicAlbum
  date published: 2024-08-28
album: Realization
  type: MusicAlbum
  date published: 2024-09-30
album: Deep in freestyle
  type: MusicAlbum
  date published: 2024-12-29
album: OPPURTUNITY COSTS
  type: MusicAlbum
  date published: 2025-01-31
album: SHOT DOWN
  type: MusicAlbum
  date published: 2025-02-26
  track: SHOT DOWN
    type: MusicRecording
    duration: PT3M6S
    duration ms: 186514
    explicit: false
    by artist: justjacub.
    in album: SHOT DOWN
      type: MusicAlbum
      date published: 2025-02-26
    isrc code: QZDA82522776
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T02:23:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5f87cf24f64dad3e021a4f6d88a1e3ac356f5cc23fba3c305a7b2ac8b7a03ff8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82522776
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x5f87cf24f64dad3e021a4f6d88a1e3ac356f5cc23fba3c305a7b2ac8b7a03ff8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA82522776.
      date published: 2026-07-04T10:04:33Z
    audio: SHOT DOWN
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 90.555
      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: 0.436
      additional property: Energy
        type: PropertyValue
        value: 0.539
      additional property: Speechiness
        type: PropertyValue
        value: 0.044
      additional property: Acousticness
        type: PropertyValue
        value: 0.214
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.12
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.323
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: BIGGER THINGS

Loudness (dB)
type: PropertyValue
value: -7.528

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Major

BIGGER THINGS
type: MusicAlbum
date published: 2025-04-04