J.Kossak
type: MusicGroup
popularity: 4
followers: 507
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7f3106608219501ffc9abc9a47f8b4bc17f9e500aaa0dc0c4d2473da26c48314
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aa713ca9-a79a-478e-91a6-77585a84105d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aa713ca9-a79a-478e-91a6-77585a84105d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aa713ca9-a79a-478e-91a6-77585a84105d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
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 0x7f3106608219501ffc9abc9a47f8b4bc17f9e500aaa0dc0c4d2473da26c48314. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa713ca9-a79a-478e-91a6-77585a84105d.json and https://artists.proofprofile.net/proofs/artist/aa713ca9-a79a-478e-91a6-77585a84105d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
album: Step
  type: MusicAlbum
  date published: 2019-03-19
album: Las Vegas Parano
  type: MusicAlbum
  date published: 2019-09-24
album: Futura
  type: MusicAlbum
  date published: 2019-10-03
album: Buch
  type: MusicAlbum
  date published: 2020-08-19
album: Uciekam
  type: MusicAlbum
  date published: 2020-11-27
album: Uciekam
  type: MusicAlbum
  date published: 2020-11-27
album: Powód
  type: MusicAlbum
  date published: 2021-03-11
album: Powód
  type: MusicAlbum
  date published: 2021-03-11
album: Najki
  type: MusicAlbum
  date published: 2021-03-19
album: Najki
  type: MusicAlbum
  date published: 2021-03-19
album: Zbożowa
  type: MusicAlbum
  date published: 2021-03-24
album: Feeria
  type: MusicAlbum
  date published: 2021-04-09
album: Feeria
  type: MusicAlbum
  date published: 2021-04-09
album: Memory lane
  type: MusicAlbum
  date published: 2021-06-10
album: Memory lane
  type: MusicAlbum
  date published: 2021-06-10
album: Leci nowy Taco
  type: MusicAlbum
  date published: 2021-07-01
album: Mango haze
  type: MusicAlbum
  date published: 2021-10-01
album: Atom
  type: MusicAlbum
  date published: 2021-10-15
album: Atom
  type: MusicAlbum
  date published: 2021-10-15
album: Narco polo
  type: MusicAlbum
  date published: 2021-11-04
album: Narco polo
  type: MusicAlbum
  date published: 2021-11-04
album: Hossa EP
  type: MusicAlbum
  date published: 2021-11-19
album: Powód (Remix)
  type: MusicAlbum
  date published: 2022-01-21
album: Brent
  type: MusicAlbum
  date published: 2022-02-04
album: Tlen
  type: MusicAlbum
  date published: 2022-02-25
album: Tlen
  type: MusicAlbum
  date published: 2022-02-25
album: Tonę
  type: MusicAlbum
  date published: 2022-03-25
album: Tonę
  type: MusicAlbum
  date published: 2022-03-25
album: Nie ma jej tu
  type: MusicAlbum
  date published: 2022-05-27
album: Nie ma jej tu
  type: MusicAlbum
  date published: 2022-05-27
album: Calma
  type: MusicAlbum
  date published: 2022-07-22
album: Nocna
  type: MusicAlbum
  date published: 2022-08-12
album: Babie lato
  type: MusicAlbum
  date published: 2022-09-15
album: Babie lato
  type: MusicAlbum
  date published: 2022-09-15
album: Sen nocy letniej
  type: MusicAlbum
  date published: 2022-10-21
album: Muszę tam być
  type: MusicAlbum
  date published: 2022-11-18
album: Muszę tam być
  type: MusicAlbum
  date published: 2022-11-21
  track: Muszę tam być
album: Stare OVO
  type: MusicAlbum
  date published: 2023-06-23
album: Lato '97
  type: MusicAlbum
  date published: 2023-07-14
album: Spacerowa
  type: MusicAlbum
  date published: 2023-08-18
album: Spacerowa
  type: MusicAlbum
  date published: 2023-08-18
album: Jesienne Chardonnay
  type: MusicAlbum
  date published: 2023-10-13
album: 1251 Expo BLVD
  type: MusicAlbum
  date published: 2023-11-24
album: 20:02
  type: MusicAlbum
  date published: 2024-03-25
album: Trzymaj mnie
  type: MusicAlbum
  date published: 2024-05-17
  track: Trzymaj mnie
album: Szaleniec
  type: MusicAlbum
  date published: 2025-08-08
album: Słodko słodkie teksty
  type: MusicAlbum
  date published: 2025-10-10

Muszę tam być
type: MusicRecording
duration: PT2M15S
duration ms: 135529
explicit: false
by artist: J.Kossak
in album: Muszę tam być
  type: MusicAlbum
  date published: 2022-11-21
isrc code: PLC062242486
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T20:08:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x20a919a30ad05ff592b75f0b7c87a40b41837eb72bb217e51aa2db05d04940a7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062242486
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957120
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:22:41+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a919a30ad05ff592b75f0b7c87a40b41837eb72bb217e51aa2db05d04940a7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLC062242486.
  date published: 2026-07-08T03:53:27Z
audio: Muszę tam być
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 165.616
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.707
  additional property: Energy
    type: PropertyValue
    value: 0.562
  additional property: Speechiness
    type: PropertyValue
    value: 0.293
  additional property: Acousticness
    type: PropertyValue
    value: 0.206
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.007
  additional property: Liveness
    type: PropertyValue
    value: 0.118
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.16
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.743
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Trzymaj mnie
type: MusicRecording
duration: PT2M32S
duration ms: 152823
explicit: false
by artist: J.Kossak
in album: Trzymaj mnie
  type: MusicAlbum
  date published: 2024-05-17
isrc code: PL31T2405205
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T22:08:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdfc1793eee6a582b5c16cb800a499c946f1cf10097a690d0a860ce416af8a539
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL31T2405205
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc1793eee6a582b5c16cb800a499c946f1cf10097a690d0a860ce416af8a539. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PL31T2405205.
  date published: 2026-07-08T03:53:27Z
audio: Trzymaj mnie
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.788
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.631
  additional property: Energy
    type: PropertyValue
    value: 0.668
  additional property: Speechiness
    type: PropertyValue
    value: 0.143
  additional property: Acousticness
    type: PropertyValue
    value: 0.146
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.264
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.376
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.996
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major