A Two-Phase Commit Protocol with Bayesian Probabilistic Risk Assessment for Secure, Non-Custodial Blockchain Transactions.
PAUSE (Protocol for Auditing and Underwriting Secure Exchanges) introduces a novel blockchain security ecosystem that solves the fundamental problem of irreversible, unverified cryptocurrency transactions. The system combines a Two-Phase Commit Protocol for non-custodial payments with a Bayesian Probabilistic Risk Assessment Engine that evaluates recipient addresses in real time using eleven independent signals.
In the Commit Protocol, a sender creates a cryptographically signed payment intent off-chain at zero gas cost using EIP-712 typed data signing. The intent is shareable via link or QR code and revocable at any time. When the recipient commits the intent on-chain, the smart contract atomically verifies the signature, invokes the Risk Engine, and executes the transfer if and only if the address passes the safety threshold. The entire operation is 100% non-custodial.
Additionally, the ecosystem includes PAUSECard (currently in Private Beta), a crypto-backed Visa card system using an optimistic authorization method that bridges Visa's 2-second requirement with asynchronous blockchain settlement. Early access for select users.
Off-chain EIP-712 intent signing (zero gas) with on-chain atomic commit. Risk-gated, revocable, non-custodial.
11 independent signals combined via log-odds scoring with correlation discounting. Calibrated probabilistic output.
Crypto-backed Visa card with optimistic authorization (<2s) and async on-chain USDC settlement. Early access for select users. Join the waitlist.
Funds transfer directly sender → recipient. PAUSE never takes custody. Atomic execution or full revert.
Each signal independently evaluates a risk dimension, returning a probability and confidence level. Combined via log-odds with correlation discounting.
| # | Signal | Weight | Detects |
|---|---|---|---|
| 1 | mixer_exposure | 0.45 | Mixing/tumbling service interaction |
| 2 | draining_pattern | 0.30 | Wallet drainer approval + sweep behavior |
| 3 | exchange_cluster | 0.25 | Exchange hot/cold wallet proximity |
| 4 | sweep_pattern | 0.25 | Fund consolidation patterns |
| 5 | tx_burst_anomaly | 0.20 | Bot-like transaction volume spikes |
| 6 | scam_graph | 0.20 | Connections to reported scam addresses |
| 7 | dusting_attack | 0.15 | Micro-transaction deanonymization |
| 8 | ens_authenticity | 0.15 | ENS domain ownership verification |
| 9 | rival_consensus | 0.15 | External risk service cross-reference |
| 10 | wallet_age | 0.10 | Account creation date and activity |
| 11 | balance_volatility | 0.10 | Abnormal balance fluctuations |
This document establishes prior art as of its publication date. Patent pending.
© 2026 PAUSE. All rights reserved. Patent pending.