Katharina Siller
type: MusicGroup
popularity: 16
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb8bd576339cf4c1a93f5ad0a1bcfb04618a890b1e4f750fb280a42350e2562df
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953817
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953817
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f7beb7f6-754b-4a81-b598-08e86be91d4b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f7beb7f6-754b-4a81-b598-08e86be91d4b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f7beb7f6-754b-4a81-b598-08e86be91d4b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T18:10:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb8bd576339cf4c1a93f5ad0a1bcfb04618a890b1e4f750fb280a42350e2562df","name":"Katharina Siller","registered_at":"2026-06-15T06:33:57Z","symbol":"NIM0712068","token_address":"0x60d372e9cdb3a7ad10f564d9625c546ac0806f2a","type":"artist","uuid":"f7beb7f6-754b-4a81-b598-08e86be91d4b"}
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 0xb8bd576339cf4c1a93f5ad0a1bcfb04618a890b1e4f750fb280a42350e2562df. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7beb7f6-754b-4a81-b598-08e86be91d4b.json and https://artists.proofprofile.net/proofs/artist/f7beb7f6-754b-4a81-b598-08e86be91d4b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
  text: {"copyright_id":"0xb8bd576339cf4c1a93f5ad0a1bcfb04618a890b1e4f750fb280a42350e2562df","name":"Katharina Siller","registered_at":"2026-06-15T06:33:57Z","symbol":"NIM0712068","token_address":"0x60d372e9cdb3a7ad10f564d9625c546ac0806f2a","type":"artist","uuid":"f7beb7f6-754b-4a81-b598-08e86be91d4b"}