Marcin Spenner
type: MusicGroup
popularity: 5
followers: 593
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7bea823276dc8ab3dda3cc1adba3351ec5a8a0885a3ef34608584c36a97d563d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954130
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954130
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7c5ecab2-25b5-4d4c-87ec-dafa01d97594.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7c5ecab2-25b5-4d4c-87ec-dafa01d97594.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7c5ecab2-25b5-4d4c-87ec-dafa01d97594
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:07:14Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7bea823276dc8ab3dda3cc1adba3351ec5a8a0885a3ef34608584c36a97d563d","name":"Marcin Spenner","registered_at":"2026-06-17T08:56:32Z","symbol":"NIM1345039","token_address":"0x1697aab109e078f84a8a0bfcf33b2a7242123da7","type":"artist","uuid":"7c5ecab2-25b5-4d4c-87ec-dafa01d97594"}
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 0x7bea823276dc8ab3dda3cc1adba3351ec5a8a0885a3ef34608584c36a97d563d. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c5ecab2-25b5-4d4c-87ec-dafa01d97594.json and https://artists.proofprofile.net/proofs/artist/7c5ecab2-25b5-4d4c-87ec-dafa01d97594.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:19:19Z
  text: {"copyright_id":"0x7bea823276dc8ab3dda3cc1adba3351ec5a8a0885a3ef34608584c36a97d563d","name":"Marcin Spenner","registered_at":"2026-06-17T08:56:32Z","symbol":"NIM1345039","token_address":"0x1697aab109e078f84a8a0bfcf33b2a7242123da7","type":"artist","uuid":"7c5ecab2-25b5-4d4c-87ec-dafa01d97594"}
album: Heaven
  type: MusicAlbum
  date published: 2012-05-14
album: She's like the wind
  type: MusicAlbum
  date published: 2012-05-24
album: Do kolyski
  type: MusicAlbum
  date published: 2012-05-24
album: Przeminie
  type: MusicAlbum
  date published: 2014-01-01
album: Moskwa (Radio Edit)
  type: MusicAlbum
  date published: 2015-12-08
album: Lucy
  type: MusicAlbum
  date published: 2018-02-28
album: Tu Mam Wszystko (Radio Edit)
  type: MusicAlbum
  date published: 2018-09-12
album: Na Czas
  type: MusicAlbum
  date published: 2019-02-01
album: Zaskoczeni
  type: MusicAlbum
  date published: 2022-06-15
album: Zgubiłem się
  type: MusicAlbum
  date published: 2023-02-15