Venus in Furs () is a novella by the Austrian author Leopold von Sacher-Masoch, and the best known of his works. The novel was to be part of an epic series that Sacher-Masoch envisioned called Legacy
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 0xfa99a91351a7d4cc13b2780f379d42e849fd896b78cdfd9c22ecc30e65b8e6e5. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d23b9f0-9d96-43c6-ba18-36ba83871abe.json and https://artists.proofprofile.net/proofs/artist/8d23b9f0-9d96-43c6-ba18-36ba83871abe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).