Privacy on Invisibook

Invisibook Protocol

Sat, 25 Apr 2026 00:00:00 +0000

Privacy-Preserving Cross-Chain Order Book Protocol

Technical White Paper — Protocol Flow Details

Version 1.0 | 2026

1 Overview

Invisibook is a privacy-preserving cross-chain order book protocol designed for decentralized trading scenarios. It addresses a series of problems arising from the transparency of trade amounts in current DeFi order book models, including front-running, liquidity manipulation, other MEV attacks, and trading strategy leakage.

The core design philosophy of Invisibook is: prices are public, amounts are private. The on-chain order book exposes only price information for the matching engine to perform pairing, while the specific order amounts are stored on-chain as Poseidon hash commitments (Poseidon is tentatively chosen; other hash functions may be considered later — the key selection criterion is which hash achieves the best combined performance in MPC circuits and ZK proofs). No third party can learn the true size of any order. When two orders are successfully matched, the buyer and seller complete settlement through an off-chain peer-to-peer privacy settlement protocol, during which both parties’ order amounts remain confidential to outsiders at all times.

Secret Binary Carry Computation in Secret-Sharing MPC

Sat, 21 Mar 2026 00:00:00 +0000

Chapter 1: Problem Background and Core Challenges

1.1 What Is Secret Addition

In secure multi-party computation (MPC), two parties (Alice and Bob) each hold a secret share of a binary number and wish to compute the sum of the two numbers without revealing the plaintext of either operand. Here, “secret share” refers to Boolean secret sharing: a bit x is split into two shares x₁ and x₂ such that x = x₁ ⊕ x₂, where ⊕ denotes the XOR operation. Alice holds x₁, Bob holds x₂, and each party’s share alone is a uniformly random bit from which the true value of x cannot be inferred.

Decentralized Privacy Order Book: A Necessary Revolution in Finance

Mon, 05 Jan 2026 00:00:00 +0000

In today’s rapidly evolving financial markets, trading efficiency, privacy protection, and fairness have become focal concerns for investors. While the model dominated by traditional centralized exchanges has facilitated global capital flows, it has also exposed numerous structural deficiencies. These deficiencies not only harm traders’ interests but also hinder the healthy development of markets. In response, the decentralized privacy order book has emerged as an innovative solution. It not only addresses the pain points of the traditional model but also achieves revolutionary breakthroughs in privacy, price discovery, and censorship resistance. This article begins with the limitations of traditional exchanges, progresses through exploratory solutions such as dark pools and quantitative trading algorithms, and ultimately demonstrates the necessity of the decentralized privacy order book and its disruptive impact on the financial sector.

How to Privately Compare Two Integers

Mon, 29 Dec 2025 00:00:00 +0000

This article is being translated. Please check back later.

Invisibook: A Privacy-Preserving Decentralized Order Book

Thu, 25 Dec 2025 00:00:00 +0000

Introduction: Why We Need a Decentralized Privacy Order Book

Order book trading is the most mature and scalable form of trading in modern financial systems, and it serves as the core mechanism for price discovery and liquidity formation. However, in an era of digitization, on-chain execution, and high-frequency trading, order books reveal a long-overlooked structural contradiction: a trading system cannot simultaneously achieve censorship resistance, privacy protection, and verifiable execution.

Decentralized Order Books: Censorship-Resistant and Verifiable, but Lacking Privacy

Decentralized trading systems deploy order submission, sequencing, and matching rules on open protocols, eliminating dependence on centralized intermediaries and endowing trade execution with inherent censorship resistance. As long as a user can interact with the network, their orders cannot be arbitrarily rejected, frozen, or selectively delayed by any single entity.