Kozyrska x Sieczak
type: MusicGroup
popularity: 13
followers: 272
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf60353cadbfb11e3c658659389801aa355b09d2973e1ffc8edfcebf7c33f056b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953697
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953697
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5d537793-4d20-4117-aa8a-8fa85cd5b9ca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5d537793-4d20-4117-aa8a-8fa85cd5b9ca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5d537793-4d20-4117-aa8a-8fa85cd5b9ca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:49:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf60353cadbfb11e3c658659389801aa355b09d2973e1ffc8edfcebf7c33f056b","name":"Kozyrska x Sieczak","registered_at":"2026-06-14T14:16:55Z","symbol":"NIM0478901","token_address":"0xb4995e703ff0a293284fd9f7ce13eb01eb3f7063","type":"artist","uuid":"5d537793-4d20-4117-aa8a-8fa85cd5b9ca"}
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 0xf60353cadbfb11e3c658659389801aa355b09d2973e1ffc8edfcebf7c33f056b. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d537793-4d20-4117-aa8a-8fa85cd5b9ca.json and https://artists.proofprofile.net/proofs/artist/5d537793-4d20-4117-aa8a-8fa85cd5b9ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:49:28Z
  text: {"copyright_id":"0xf60353cadbfb11e3c658659389801aa355b09d2973e1ffc8edfcebf7c33f056b","name":"Kozyrska x Sieczak","registered_at":"2026-06-14T14:16:55Z","symbol":"NIM0478901","token_address":"0xb4995e703ff0a293284fd9f7ce13eb01eb3f7063","type":"artist","uuid":"5d537793-4d20-4117-aa8a-8fa85cd5b9ca"}
album: Jeszcze Będzie Pięknie EP
  type: MusicAlbum
  date published: 2020
album: Jeszcze będzie pięknie
  type: MusicAlbum
  date published: 2020
album: Jeszcze Będzie Pięknie EP
  type: MusicAlbum
  date published: 2020-06-05
album: Droga
  type: MusicAlbum
  date published: 2021
album: Powolność
  type: MusicAlbum
  date published: 2021
album: Nowe Niebo
  type: MusicAlbum
  date published: 2021
album: Jestem
  type: MusicAlbum
  date published: 2021
album: Powroty
  type: MusicAlbum
  date published: 2021
album: Zachód (Live from Tall Pine Records)
  type: MusicAlbum
  date published: 2021
album: Gwiazdy (Live from Tall Pine Records)
  type: MusicAlbum
  date published: 2021
album: Droga
  type: MusicAlbum
  date published: 2021-05-14
album: Live From Tall Pine Records EP
  type: MusicAlbum
  date published: 2022
album: Koniec i początek
  type: MusicAlbum
  date published: 2022
album: Chcemy latać
  type: MusicAlbum
  date published: 2022
album: Powolność (Live from Tall Pine Records)
  type: MusicAlbum
  date published: 2022
album: Niewidzialny
  type: MusicAlbum
  date published: 2022
album: Letni dzień
  type: MusicAlbum
  date published: 2022
album: Letni dzień
  type: MusicAlbum
  date published: 2022-06-24
album: Do mnie mów
  type: MusicAlbum
  date published: 2024-01-31
album: Do mnie mów
  type: MusicAlbum
  date published: 2025-01-01
album: Tęsknię
  type: MusicAlbum
  date published: 2025-02-28
  track: Tęsknię
    type: MusicRecording
    duration: PT3M32S
    duration ms: 212669
    explicit: false
    by artist: Kozyrska x Sieczak
    in album: Tęsknię
      type: MusicAlbum
      date published: 2025-02-28
    isrc code: PL26I2500001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T12:34:41+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3e73f5b401601025533495e0d7cd71278da9ecd352d417273601748954423f7a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958601
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958601
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL26I2500001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T19:27:02Z
    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 0x3e73f5b401601025533495e0d7cd71278da9ecd352d417273601748954423f7a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PL26I2500001.
      date published: 2026-07-18T19:27:02Z
    audio: Tęsknię
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 157.994
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.47
      additional property: Energy
        type: PropertyValue
        value: 0.584
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.526
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.566
      additional property: Liveness
        type: PropertyValue
        value: 0.115
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.392
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.352
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Zaopiekuj
  type: MusicAlbum
  date published: 2025-04-11
album: Ostatni
  type: MusicAlbum
  date published: 2025-08-01
album: Pozwól mi
  type: MusicAlbum
  date published: 2025-09-05
  track: Pozwól mi
    type: MusicRecording
    duration: PT4M19S
    duration ms: 259811
    explicit: false
    by artist: Kozyrska x Sieczak
    in album: Pozwól mi
      type: MusicAlbum
      date published: 2025-09-05
    isrc code: PL26I2500010
    additional property: CopyrightID
    additional property: CopyrightStatus
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Pozwól mi
album: Prosto w Serce

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-13T01:42:16+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xb33b5caa96f7f5582a63756820fc5c8106104022de558466e55d680ea41f8c6d

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957788

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957788

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL26I2500010

OTSTimestamp
type: PropertyValue
value: 2026-07-13T02:37:37Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33b5caa96f7f5582a63756820fc5c8106104022de558466e55d680ea41f8c6d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/PL26I2500010.
date published: 2026-07-13T02:37:37Z

Pozwól mi
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 144.797
additional property: Musical Key
  type: PropertyValue
  value: 1
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.463
additional property: Energy
  type: PropertyValue
  value: 0.571
additional property: Speechiness
  type: PropertyValue
  value: 0.031
additional property: Acousticness
  type: PropertyValue
  value: 0.136
additional property: Instrumentalness
  type: PropertyValue
  value: 0.005
additional property: Liveness
  type: PropertyValue
  value: 0.113
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.187
additional property: Loudness (dB)
  type: PropertyValue
  value: -9.56
additional property: Key Name
  type: PropertyValue
  value: C#
additional property: Mode Name
  type: PropertyValue
  value: Major

Prosto w Serce
type: MusicAlbum
date published: 2025-10-08