Katarzyna Granecka
type: MusicGroup
popularity: 4
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd911f13f39eb0847935c4acff278ca450da1222707101379f38d5edc325d27ff
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/68faab52-ad12-4236-a276-aee5ad8643eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/68faab52-ad12-4236-a276-aee5ad8643eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/68faab52-ad12-4236-a276-aee5ad8643eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd911f13f39eb0847935c4acff278ca450da1222707101379f38d5edc325d27ff","name":"Katarzyna Granecka","registered_at":"2026-06-17T02:15:33Z","symbol":"NIM1249398","token_address":"0x347a62b642c94366ec47848f2c8bcc50f4695802","type":"artist","uuid":"68faab52-ad12-4236-a276-aee5ad8643eb"}
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 0xd911f13f39eb0847935c4acff278ca450da1222707101379f38d5edc325d27ff. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68faab52-ad12-4236-a276-aee5ad8643eb.json and https://artists.proofprofile.net/proofs/artist/68faab52-ad12-4236-a276-aee5ad8643eb.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xd911f13f39eb0847935c4acff278ca450da1222707101379f38d5edc325d27ff","name":"Katarzyna Granecka","registered_at":"2026-06-17T02:15:33Z","symbol":"NIM1249398","token_address":"0x347a62b642c94366ec47848f2c8bcc50f4695802","type":"artist","uuid":"68faab52-ad12-4236-a276-aee5ad8643eb"}