Martin Lechowicz
type: MusicGroup
genre: sea shanties
popularity: 14
followers: 858
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x01ab2655daf2ce869db316f5cd8cbb9d35cfe3e0fc5da72484e5df1921bede14
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953704
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953704
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7ab77c2d-fe5c-4487-a28b-979bc14ca540.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7ab77c2d-fe5c-4487-a28b-979bc14ca540.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7ab77c2d-fe5c-4487-a28b-979bc14ca540
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T22:58:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x01ab2655daf2ce869db316f5cd8cbb9d35cfe3e0fc5da72484e5df1921bede14","name":"Martin Lechowicz","registered_at":"2026-06-14T17:23:21Z","symbol":"NIM0523392","token_address":"0x9ef8dacaa6cd26818e167232701ea2cd47be78c8","type":"artist","uuid":"7ab77c2d-fe5c-4487-a28b-979bc14ca540"}
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 0x01ab2655daf2ce869db316f5cd8cbb9d35cfe3e0fc5da72484e5df1921bede14. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ab77c2d-fe5c-4487-a28b-979bc14ca540.json and https://artists.proofprofile.net/proofs/artist/7ab77c2d-fe5c-4487-a28b-979bc14ca540.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T22:58:38Z
  text: {"copyright_id":"0x01ab2655daf2ce869db316f5cd8cbb9d35cfe3e0fc5da72484e5df1921bede14","name":"Martin Lechowicz","registered_at":"2026-06-14T17:23:21Z","symbol":"NIM0523392","token_address":"0x9ef8dacaa6cd26818e167232701ea2cd47be78c8","type":"artist","uuid":"7ab77c2d-fe5c-4487-a28b-979bc14ca540"}
album: Kompletny Brak Profesjonalizmu
  type: MusicAlbum
  date published: 2012
  track: Ballada o smutnym programiście
    type: MusicRecording
    duration: PT4M10S
    duration ms: 250706
    explicit: false
    by artist: Martin Lechowicz
    in album: Kompletny Brak Profesjonalizmu
      type: MusicAlbum
      date published: 2012
    genre: sea shanties
    isrc code: GBSMU1585308
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T07:46:37+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x07d144910993a3b0055980d8836a88cb11509d531782e0ee94a1055bcb86fb90
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959114
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959114
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU1585308
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T08:41:42Z
    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 0x07d144910993a3b0055980d8836a88cb11509d531782e0ee94a1055bcb86fb90. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU1585308 — a six-check JSON result.
      date published: 2026-07-22T08:41:42Z
    audio: Ballada o smutnym programiście
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 108.139
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.593
      additional property: Energy
        type: PropertyValue
        value: 0.291
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.832
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.099
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.288
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.107
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Kaleka społeczny
    type: MusicRecording
    duration: PT3M7S
    duration ms: 187626
    explicit: false
    by artist: Martin Lechowicz
    in album: Kompletny Brak Profesjonalizmu
      type: MusicAlbum
      date published: 2012
    genre: sea shanties
    isrc code: GBSMU1585309
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T04:19:07+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5d98f4a2575277de3e1473390c33f1528f8d942d53da0b7f5f3bd84f510c5e5a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958238
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958238
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU1585309
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T04:30:31Z
    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 0x5d98f4a2575277de3e1473390c33f1528f8d942d53da0b7f5f3bd84f510c5e5a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU1585309 — a six-check JSON result.
      date published: 2026-07-16T04:30:31Z
    audio: Kaleka społeczny
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 123.545
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.573
      additional property: Energy
        type: PropertyValue
        value: 0.411
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.809
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.099
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.533
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Kompletny Brak Wolności

Loudness (dB)
type: PropertyValue
value: -10.385

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major

Kompletny Brak Wolności
type: MusicAlbum
date published: 2012