Marek Kądziela
type: MusicGroup
popularity: 4
followers: 158
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x07dfdb37ee8b29cfae00e03b2d58d9c8671122545e2daa0ec4b3906883e990c9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06976fd9-fb9e-4343-ad02-dc5038af649e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06976fd9-fb9e-4343-ad02-dc5038af649e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/06976fd9-fb9e-4343-ad02-dc5038af649e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x07dfdb37ee8b29cfae00e03b2d58d9c8671122545e2daa0ec4b3906883e990c9","name":"Marek Kądziela","registered_at":"2026-06-15T15:43:36Z","symbol":"NIM0754930","token_address":"0x2609d875caf4fa4c6a5601636326c7e1e46e3dc6","type":"artist","uuid":"06976fd9-fb9e-4343-ad02-dc5038af649e"}
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 0x07dfdb37ee8b29cfae00e03b2d58d9c8671122545e2daa0ec4b3906883e990c9. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06976fd9-fb9e-4343-ad02-dc5038af649e.json and https://artists.proofprofile.net/proofs/artist/06976fd9-fb9e-4343-ad02-dc5038af649e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x07dfdb37ee8b29cfae00e03b2d58d9c8671122545e2daa0ec4b3906883e990c9","name":"Marek Kądziela","registered_at":"2026-06-15T15:43:36Z","symbol":"NIM0754930","token_address":"0x2609d875caf4fa4c6a5601636326c7e1e46e3dc6","type":"artist","uuid":"06976fd9-fb9e-4343-ad02-dc5038af649e"}
album: Meanwhile
  type: MusicAlbum
  date published: 2020-12-20
album: In Bloom
  type: MusicAlbum
  date published: 2021-03-10
album: Marek Kądziela Jazz Ensemble
  type: MusicAlbum
  date published: 2021-03-26
album: Rough Enough
  type: MusicAlbum
  date published: 2023-07-21