An Anstalt () or Anstalt partnership is a type of incorporated organisation in Liechtenstein.FATF guidance: Transparency and Beneficial Ownership,(October 2014) page 14. Characteristics An Anstalt i
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2550e3be979c8bdbc2c0ee2273986a81393687427d1a7b4ae0a8fc4e1d7f281d. 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/5c8b2513-9313-47b4-a000-1a342799d7ca.json and https://artists.proofprofile.net/proofs/artist/5c8b2513-9313-47b4-a000-1a342799d7ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).