Jakub Strach
type: MusicGroup
popularity: 3
followers: 175
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfad3297750192eedd8e4199715b20080666d31ada6f2366e945ca6bb3276f76c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/873a5ccd-0618-4648-8088-e270a05499e0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/873a5ccd-0618-4648-8088-e270a05499e0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/873a5ccd-0618-4648-8088-e270a05499e0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfad3297750192eedd8e4199715b20080666d31ada6f2366e945ca6bb3276f76c","name":"Jakub Strach","registered_at":"2026-06-17T12:47:18Z","symbol":"NIM1399995","token_address":"0x000b876ecdd58a1774b9a8394bf4f1f0f639f1b1","type":"artist","uuid":"873a5ccd-0618-4648-8088-e270a05499e0"}
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 0xfad3297750192eedd8e4199715b20080666d31ada6f2366e945ca6bb3276f76c. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/873a5ccd-0618-4648-8088-e270a05499e0.json and https://artists.proofprofile.net/proofs/artist/873a5ccd-0618-4648-8088-e270a05499e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xfad3297750192eedd8e4199715b20080666d31ada6f2366e945ca6bb3276f76c","name":"Jakub Strach","registered_at":"2026-06-17T12:47:18Z","symbol":"NIM1399995","token_address":"0x000b876ecdd58a1774b9a8394bf4f1f0f639f1b1","type":"artist","uuid":"873a5ccd-0618-4648-8088-e270a05499e0"}
track: Rozpal sobie iskrę życia - z filmu "Mary Poppins powraca"
  type: MusicRecording
  duration: PT7M3S
  duration ms: 423133
  explicit: false
  by artist: Wojciech Brzezinski
  by artist: Ewa Prus
  by artist: Otar Saralidze
  by artist: Julia Totoszko
  by artist: Jakub Strach
  by artist: Mateusz Panasiuk
  by artist: Latarnicy
  in album: Disney Najwieksze Przeboje (4 Vol.)
    type: MusicAlbum
    date published: 2020-11-06
  isrc code: USWD11890957
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T12:36:06+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfc5319a8ad589d2a0201cf721d3eacb0a4dad524138f8d9e9f07312d8f2e7181
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960259
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960259
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD11890957
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T12:51:24Z
  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 0xfc5319a8ad589d2a0201cf721d3eacb0a4dad524138f8d9e9f07312d8f2e7181. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/USWD11890957.
    date published: 2026-07-30T12:51:24Z
  audio: Rozpal sobie iskrę życia - z filmu "Mary Poppins powraca"
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 128.546
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.548
    additional property: Energy
      type: PropertyValue
      value: 0.579
    additional property: Speechiness
      type: PropertyValue
      value: 0.175
    additional property: Acousticness
      type: PropertyValue
      value: 0.556
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.151
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.54
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.261
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major