Augur is a Bitcoin fee estimation library that provides accurate fee estimates by analyzing historical mempool data.

Overview

The Augur library allows you to predict Bitcoin transaction confirmation times with various confidence levels. It analyzes mempool snapshots to generate fee rate estimates for different confirmation targets.

Key Components

• FeeEstimator: The main entry point for calculating fee estimates

• MempoolSnapshot: Represents a snapshot of the Bitcoin mempool at a specific point in time

• MempoolTransaction: Represents a transaction in the Bitcoin mempool

• FeeEstimate: Contains fee rate estimates for various block targets and confidence levels

Usage Example

// Initialize the estimator with default settings
val feeEstimator = FeeEstimator()

// Create a mempool snapshot from current transactions
val mempoolSnapshot = MempoolSnapshot.fromMempoolTransactions(
    transactions = currentMempoolTransactions.map { 
        MempoolTransaction(
            weight = it.weight.toLong(),
            fee = it.baseFee // in satoshis
        )
    },
    blockHeight = currentBlockHeight
)

// Calculate fee estimates using historical snapshots
val feeEstimate = feeEstimator.calculateEstimates(historicalSnapshots)

// Get fee rate for specific target and confidence
val feeRate = feeEstimate.getFeeRate(
    targetBlocks = 6,     // Confirm within 6 blocks
    probability = 0.95    // 95% confidence
)

Features

• Predictions based on historical mempool data and transaction inflows

• Confidence-based fee rate estimates

• Multiple confirmation targets (from 3 to 144 blocks)

• Simple, clean API that integrates with any Bitcoin implementation

• Lightweight with minimal dependencies