Katarina Fritzén
type: MusicGroup
popularity: 3
followers: 14
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6cafeea4d1c14e635a7f243b809ab92ad195586afe1f31c4d07ce47175f8b311
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953896
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953896
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/10a7820a-cdd2-4d78-9487-3bffd71a7e50.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/10a7820a-cdd2-4d78-9487-3bffd71a7e50.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/10a7820a-cdd2-4d78-9487-3bffd71a7e50
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:05:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6cafeea4d1c14e635a7f243b809ab92ad195586afe1f31c4d07ce47175f8b311","name":"Katarina Fritzén","registered_at":"2026-06-15T19:24:55Z","symbol":"NIM0807753","token_address":"0x52cd0f034e9db01f7de4c3effef3a88b57bf36e0","type":"artist","uuid":"10a7820a-cdd2-4d78-9487-3bffd71a7e50"}
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 0x6cafeea4d1c14e635a7f243b809ab92ad195586afe1f31c4d07ce47175f8b311. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10a7820a-cdd2-4d78-9487-3bffd71a7e50.json and https://artists.proofprofile.net/proofs/artist/10a7820a-cdd2-4d78-9487-3bffd71a7e50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:05:56Z
  text: {"copyright_id":"0x6cafeea4d1c14e635a7f243b809ab92ad195586afe1f31c4d07ce47175f8b311","name":"Katarina Fritzén","registered_at":"2026-06-15T19:24:55Z","symbol":"NIM0807753","token_address":"0x52cd0f034e9db01f7de4c3effef3a88b57bf36e0","type":"artist","uuid":"10a7820a-cdd2-4d78-9487-3bffd71a7e50"}
album: Mera altsax
  type: MusicAlbum
  date published: 2020-11-22
album: Mera flöjt
  type: MusicAlbum
  date published: 2022-12-16
album: Mera klarinett
  type: MusicAlbum
  date published: 2024-08-14
album: Mera trumpet
  type: MusicAlbum
  date published: 2024-08-14