Polis Sitz
type: MusicGroup
popularity: 20
followers: 285
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x236922fe80c44a9fe92749bc5a0020841f32a81996395fde39b127d20f285dcf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953681
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953681
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/64a974d7-89c8-426f-a135-52e34b89347e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/64a974d7-89c8-426f-a135-52e34b89347e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/64a974d7-89c8-426f-a135-52e34b89347e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T19:31:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x236922fe80c44a9fe92749bc5a0020841f32a81996395fde39b127d20f285dcf","name":"Polis Sitz","registered_at":"2026-06-14T15:02:16Z","symbol":"NIM0489727","token_address":"0x28f604125020e7cedb0fad6021d7d99243a1ccea","type":"artist","uuid":"64a974d7-89c8-426f-a135-52e34b89347e"}
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 0x236922fe80c44a9fe92749bc5a0020841f32a81996395fde39b127d20f285dcf. Chain 2 (Bitcoin): anchored in block 953681 (2026-06-14T19:31:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64a974d7-89c8-426f-a135-52e34b89347e.json and https://artists.proofprofile.net/proofs/artist/64a974d7-89c8-426f-a135-52e34b89347e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T19:31:23Z
  text: {"copyright_id":"0x236922fe80c44a9fe92749bc5a0020841f32a81996395fde39b127d20f285dcf","name":"Polis Sitz","registered_at":"2026-06-14T15:02:16Z","symbol":"NIM0489727","token_address":"0x28f604125020e7cedb0fad6021d7d99243a1ccea","type":"artist","uuid":"64a974d7-89c8-426f-a135-52e34b89347e"}
album: No Club Nights
  type: MusicAlbum
  date published: 2021-10-01
album: Nite Flight
  type: MusicAlbum
  date published: 2022-06-05
album: Blue Morino
  type: MusicAlbum
  date published: 2022-06-26
  track: Em Londres
    type: MusicRecording
    duration: PT3M39S
    duration ms: 219000
    explicit: false
    by artist: Polis Sitz
    in album: Blue Morino
      type: MusicAlbum
      date published: 2022-06-26
    isrc code: QZAKB2168200
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T20:49:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5f3d3c5cb9467204047a85e3aef5e85476afb304e1881b9a3a4748d5a0ca378e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958455
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958455
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZAKB2168200
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T21:28:36Z
    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 0x5f3d3c5cb9467204047a85e3aef5e85476afb304e1881b9a3a4748d5a0ca378e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZAKB2168200.
      date published: 2026-07-17T21:28:36Z
    audio: Em Londres
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 79.998
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.69
      additional property: Energy
        type: PropertyValue
        value: 0.667
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.113
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.75
      additional property: Liveness
        type: PropertyValue
        value: 0.653
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.86
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.375
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Korean BBQ
  type: MusicAlbum
  date published: 2022-07-03
album: burnt orange
  type: MusicAlbum
  date published: 2022-07-10
album: Gumley
  type: MusicAlbum
  date published: 2022-07-17
  track: WHOOP
    type: MusicRecording
    duration: PT2M36S
    duration ms: 156734
    explicit: false
    by artist: Polis Sitz
    in album: Gumley
      type: MusicAlbum
      date published: 2022-07-17
    isrc code: QZAKB2169718
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T06:32:50+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb72b590d151172b47c41768948577f062f1a67beac9d8644436ec932c2ae12be
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZAKB2169718
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 0xb72b590d151172b47c41768948577f062f1a67beac9d8644436ec932c2ae12be. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZAKB2169718.
      date published: 2026-07-04T11:19:20Z
    audio: WHOOP
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 169.992
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.661
      additional property: Energy
        type: PropertyValue
        value: 0.376
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: 30 30
album: CHOI
album: Zim_Zer
album: Rocio
album: ninh binh
album: New Journeys
album: Nightrider
album: You

Acousticness
type: PropertyValue
value: 0.496

Instrumentalness
type: PropertyValue
value: 0.822

Liveness
type: PropertyValue
value: 0.094

Valence (Positivity)
type: PropertyValue
value: 0.065

Loudness (dB)
type: PropertyValue
value: -11.162

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

30 30
type: MusicAlbum
date published: 2022-08-14

CHOI
type: MusicAlbum
date published: 2022-10-30

Zim_Zer
type: MusicAlbum
date published: 2022-11-27

Rocio
type: MusicAlbum
date published: 2022-12-11

ninh binh
type: MusicAlbum
date published: 2023-01-22

New Journeys
type: MusicAlbum
date published: 2023-02-05

Nightrider
type: MusicAlbum
date published: 2023-10-22

You
type: MusicAlbum
date published: 2023-11-05