Piotr Herdzina
type: MusicGroup
genre: disco polo
popularity: 2
followers: 138
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x054fde4823799a859247cdb71c9a30d0ab3e6999894ec89d2c382c75382e849c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953968
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953968
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/28c7d4ee-fc86-4f34-9b2c-4057c9f70d9c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/28c7d4ee-fc86-4f34-9b2c-4057c9f70d9c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/28c7d4ee-fc86-4f34-9b2c-4057c9f70d9c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:01:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x054fde4823799a859247cdb71c9a30d0ab3e6999894ec89d2c382c75382e849c","name":"Piotr Herdzina","registered_at":"2026-06-16T03:45:22Z","symbol":"NIM0927192","token_address":"0x83c90dbbfe57857a7eeec016d5f88bca2bc98f72","type":"artist","uuid":"28c7d4ee-fc86-4f34-9b2c-4057c9f70d9c"}
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 0x054fde4823799a859247cdb71c9a30d0ab3e6999894ec89d2c382c75382e849c. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28c7d4ee-fc86-4f34-9b2c-4057c9f70d9c.json and https://artists.proofprofile.net/proofs/artist/28c7d4ee-fc86-4f34-9b2c-4057c9f70d9c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:01:49Z
  text: {"copyright_id":"0x054fde4823799a859247cdb71c9a30d0ab3e6999894ec89d2c382c75382e849c","name":"Piotr Herdzina","registered_at":"2026-06-16T03:45:22Z","symbol":"NIM0927192","token_address":"0x83c90dbbfe57857a7eeec016d5f88bca2bc98f72","type":"artist","uuid":"28c7d4ee-fc86-4f34-9b2c-4057c9f70d9c"}
album: Mój Świat
  type: MusicAlbum
  date published: 2017-08-10
album: Cover Songs
  type: MusicAlbum
  date published: 2017-08-10