Marek Grechuta i Anawa
type: MusicGroup
popularity: 12
followers: 1009
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6e0761135be0a1dc2058e387b8fa07a0f7dcdbdaf92a6c9da24c3671afc43081
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953641
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953641
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/38e9f2df-addb-4a2b-a27c-c5b50c477b13.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/38e9f2df-addb-4a2b-a27c-c5b50c477b13.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/38e9f2df-addb-4a2b-a27c-c5b50c477b13
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T13:54:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6e0761135be0a1dc2058e387b8fa07a0f7dcdbdaf92a6c9da24c3671afc43081","name":"Marek Grechuta i Anawa","registered_at":"2026-06-14T10:31:07Z","symbol":"NIM0425031","token_address":"0x57ec8d98dc7a2ec4dcc6fae7e17eb47f84ded865","type":"artist","uuid":"38e9f2df-addb-4a2b-a27c-c5b50c477b13"}
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 0x6e0761135be0a1dc2058e387b8fa07a0f7dcdbdaf92a6c9da24c3671afc43081. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38e9f2df-addb-4a2b-a27c-c5b50c477b13.json and https://artists.proofprofile.net/proofs/artist/38e9f2df-addb-4a2b-a27c-c5b50c477b13.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T13:54:28Z
  text: {"copyright_id":"0x6e0761135be0a1dc2058e387b8fa07a0f7dcdbdaf92a6c9da24c3671afc43081","name":"Marek Grechuta i Anawa","registered_at":"2026-06-14T10:31:07Z","symbol":"NIM0425031","token_address":"0x57ec8d98dc7a2ec4dcc6fae7e17eb47f84ded865","type":"artist","uuid":"38e9f2df-addb-4a2b-a27c-c5b50c477b13"}
album: Marek Grechuta - koncerty. Opole '76
  type: MusicAlbum
  date published: 2014-05-26
  track: Hop szklanke piwa
    type: MusicRecording
    duration: PT1M25S
    duration ms: 85373
    explicit: false
    by artist: Marek Grechuta i Anawa
    in album: Marek Grechuta - koncerty. Opole '76
      type: MusicAlbum
      date published: 2014-05-26
    isrc code: PLA391478216
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T02:49:40+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc6ebdd54c8ad72925340efc4f775a382dc7b28732771eeac3a494a0cc93ce814
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958690
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958690
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA391478216
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T07:14:39Z
    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 0xc6ebdd54c8ad72925340efc4f775a382dc7b28732771eeac3a494a0cc93ce814. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PLA391478216.
      date published: 2026-07-19T07:14:39Z
    audio: Hop szklanke piwa
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.434
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.665
      additional property: Energy
        type: PropertyValue
        value: 0.396
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.696
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.624
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.885
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.034
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Marek Grechuta - koncerty. Krakow '84
  type: MusicAlbum
  date published: 2014-09-15
  track: Czlowiek spotegowany czlowiekiem
    type: MusicRecording
    duration: PT2M37S
    duration ms: 157413
    explicit: false
    by artist: Marek Grechuta i Anawa
    in album: Marek Grechuta - koncerty. Krakow '84
      type: MusicAlbum
      date published: 2014-09-15
    isrc code: PLA391478306
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T23:10:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe3f16bede8979d255a015d0113cf9fb183cb25d2ad8ddcee1fb6f4f72191966d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957771
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957771
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA391478306
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T23:27:28Z
    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 0xe3f16bede8979d255a015d0113cf9fb183cb25d2ad8ddcee1fb6f4f72191966d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PLA391478306.
      date published: 2026-07-12T23:27:28Z
    audio: Czlowiek spotegowany czlowiekiem
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 83.852
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.33
      additional property: Energy
        type: PropertyValue
        value: 0.522
      additional property: Speechiness
        type: PropertyValue
        value: 0.102
      additional property: Acousticness
        type: PropertyValue
        value: 0.885
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.002
      additional property: Liveness
        type: PropertyValue
        value: 0.569
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.318
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Loudness (dB)
type: PropertyValue
value: -11.653

Key Name
type: PropertyValue
value: Eb

Mode Name
type: PropertyValue
value: Major