Kathrin Schmidlin
type: MusicGroup
genre: avant-garde
popularity: 3
followers: 34
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5dd575a7bada26c1bdeefd6c0a8e9ef542ceaa08314364d0d5ddc00336d716a1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e04a5a27-eccc-4fb3-b287-6ad813d5eca9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e04a5a27-eccc-4fb3-b287-6ad813d5eca9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e04a5a27-eccc-4fb3-b287-6ad813d5eca9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5dd575a7bada26c1bdeefd6c0a8e9ef542ceaa08314364d0d5ddc00336d716a1","name":"Kathrin Schmidlin","registered_at":"2026-06-21T06:17:33Z","symbol":"NIM1845429","token_address":"0x576d4e5fe52d87f60686c20bb5682bf3ec5b11ec","type":"artist","uuid":"e04a5a27-eccc-4fb3-b287-6ad813d5eca9"}
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 0x5dd575a7bada26c1bdeefd6c0a8e9ef542ceaa08314364d0d5ddc00336d716a1. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e04a5a27-eccc-4fb3-b287-6ad813d5eca9.json and https://artists.proofprofile.net/proofs/artist/e04a5a27-eccc-4fb3-b287-6ad813d5eca9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x5dd575a7bada26c1bdeefd6c0a8e9ef542ceaa08314364d0d5ddc00336d716a1","name":"Kathrin Schmidlin","registered_at":"2026-06-21T06:17:33Z","symbol":"NIM1845429","token_address":"0x576d4e5fe52d87f60686c20bb5682bf3ec5b11ec","type":"artist","uuid":"e04a5a27-eccc-4fb3-b287-6ad813d5eca9"}
album: Opus 1 feminin
  type: MusicAlbum
  date published: 2022-05-13
album: Clara Schumann gewidmet
  type: MusicAlbum
  date published: 2025-06-20