SAD KARTI
type: MusicGroup
popularity: 2
followers: 66
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x99aa603478e4e3c5ec4c11233fd05edcb29ad5367897b35f5c9d44773d3cd0fd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f9155e17-8fca-45de-a37f-a83c85dfd826.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f9155e17-8fca-45de-a37f-a83c85dfd826.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f9155e17-8fca-45de-a37f-a83c85dfd826
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x99aa603478e4e3c5ec4c11233fd05edcb29ad5367897b35f5c9d44773d3cd0fd","name":"SAD KARTI","registered_at":"2026-06-21T16:04:07Z","symbol":"NIM1968060","token_address":"0x6b1624dfc4f7e521d848d7cfd012963189791e69","type":"artist","uuid":"f9155e17-8fca-45de-a37f-a83c85dfd826"}
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 0x99aa603478e4e3c5ec4c11233fd05edcb29ad5367897b35f5c9d44773d3cd0fd. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9155e17-8fca-45de-a37f-a83c85dfd826.json and https://artists.proofprofile.net/proofs/artist/f9155e17-8fca-45de-a37f-a83c85dfd826.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0x99aa603478e4e3c5ec4c11233fd05edcb29ad5367897b35f5c9d44773d3cd0fd","name":"SAD KARTI","registered_at":"2026-06-21T16:04:07Z","symbol":"NIM1968060","token_address":"0x6b1624dfc4f7e521d848d7cfd012963189791e69","type":"artist","uuid":"f9155e17-8fca-45de-a37f-a83c85dfd826"}
album: Kolejny raz
  type: MusicAlbum
  date published: 2021-11-29
album: Oby do jutra
  type: MusicAlbum
  date published: 2022-03-15
album: Cały ja
  type: MusicAlbum
  date published: 2022-12-20
album: Do końca
  type: MusicAlbum
  date published: 2023-08-08
album: Problem
  type: MusicAlbum
  date published: 2024-02-29
album: Superhero
  type: MusicAlbum
  date published: 2024-05-10