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© 2025 REVOLT WHITEPAPER V.1.0

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  • Algorithm 2: Enhanced Structuring of RvltGRAPH with PHANTOM
  • Core Principle
  • Algorithm Description
  • Key Improvements
  • Detailed Process

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  1. INTRODUCTION
  2. Technology Overview

RvltALGORITHM 2

© 2025 REVOLT V.1.0

Algorithm 2: Enhanced Structuring of RvltGRAPH with PHANTOM

Building upon the innovative PHANTOM framework, we present an improved algorithm for structuring the RvltGRAPH, Revolt Chain's specialized graph structure. This enhanced version of the Greedy Heaviest Observed Sub-Graph (GHOSTDAG) algorithm addresses the complexities of parallel block creation while optimizing for the unique characteristics of the RvltGRAPH.

Core Principle

The RvltGRAPH structure in PHANTOM allows for simultaneous block generation, significantly diverging from sequential block creation in traditional blockchains. This architectural choice necessitates a sophisticated mechanism to establish a definitive sequence for processing and validating transactions within concurrent blocks. The enhanced GHOSTDAG algorithm serves as this critical mechanism, ensuring coherent transaction ordering within the RvltGRAPH while improving efficiency and scalability.

Algorithm Description

textAlgorithm 2: Enhanced RvltGRAPH Ordering Procedure

Input: G – an RvltGRAPH, k – the propagation parameter
Output: ord(G) – an ordered list containing all of G's blocks

Function ENHANCED-ORDER(G, k):
    Initialize empty priority queue topo_queue
    Initialize empty ordered list L
    BLUE_k(G) ← CALC-BLUE(G, k)
    topo_queue.push(genesis, priority=0)

    while topo_queue is not empty:
        B ← topo_queue.pop()
        if B not in L:
            L.append(B)
            for C in (children(B) ∩ BLUE_k(G)):
                unprocessed_past ← past(C) ∩ anticone(B) \ L
                for D in unprocessed_past:
                    priority = calculate_priority(D, BLUE_k(G))
                    topo_queue.push(D, priority)
                priority = calculate_priority(C, BLUE_k(G))
                topo_queue.push(C, priority)

    return L

Function calculate_priority(block, BLUE_k):
    return len(past(block) ∩ BLUE_k)

Key Improvements

  1. Priority Queue: Replaced the simple queue with a priority queue to process blocks more efficiently based on their importance in the RvltGRAPH.

  2. Dynamic Priority Calculation: Introduced a calculate_priority function that determines block priority based on its relationship to the blue set, ensuring more critical blocks are processed earlier.

  3. Duplicate Avoidance: Added a check to prevent re-processing of blocks already in the ordered list, improving efficiency.

  4. Optimized Past Set Calculation: The unprocessed_past set is now calculated more efficiently, considering only relevant blocks.

Detailed Process

  1. Initialization: The algorithm starts by initializing an empty priority queue and an ordered list. The BLUE_k set is calculated using the improved CALC-BLUE function from Algorithm 1.

  2. Iterative Processing: The core of the algorithm iteratively processes blocks from the priority queue. For each block B:

    • If not already processed, B is added to the ordered list L.

    • For each blue child C of B, the algorithm:

      • Identifies unprocessed blocks in the past of C that are in the anticone of B.

      • Calculates priorities for these blocks and the child C.

      • Adds these blocks to the priority queue with their calculated priorities.

  3. Priority Calculation: The calculate_priority function assigns higher priority to blocks with more blue ancestors, ensuring that blocks crucial to the RvltGRAPH structure are processed earlier.

  4. Termination: The process continues until the priority queue is empty, resulting in a fully ordered list of blocks.

/// Directed Acyclic Graph (DAG) Mining Protocol: Ensuring Network Integrity

In REVOLT Chain's DAG mining protocol, distinguishing between cooperative ("honest") and non-compliant ("dishonest") blocks is crucial. The protocol requires miners to reference the most recent unlinked blocks, known as "tips," in each new block.Key Protocol Features:

  1. Temporal Referencing: An honest block (B) mined at time t references all blocks published shortly before t.

  2. Immediate Release: Honest blocks are released instantly, referencing other recent honest blocks.

  3. Anticone Limitation: The protocol aims to minimize the number of honest blocks not directly referencing each other (the "anticone" of a block).

Anticone Size Control: The probability of a large anticone for an honest block is expressed as: Pr(|anticone_h(B)| > k) ∈ O(e^(-C·k)), where C > 0This ensures that honest blocks typically have small anticones.Mitigating Malicious Behavior: To counter potential attacks where malicious actors artificially inflate anticone sizes, REVOLT Chain implements the XETA PHANTOM protocol with a key parameter 'k'.XETAPHANTOM Protocol:

  • Parameter 'k': Caps the number of simultaneous block productions.

  • Assumption: Block creation follows a Poisson process.

  • Probability Bound: For any block B at time t, there's a high probability (≥ 1 - δ) that no more than k(D_max, δ) additional blocks were created within [t - D_max, t + D_max].

  • Theoretical Guarantee: |anticone(B)| ≤ k with probability ≥ 1 - δ for honest nodes.

Security Considerations: While the protocol theoretically limits anticone sizes, attackers may attempt to inflate them by generating non-compliant blocks. REVOLT Chain's implementation includes additional safeguards to detect and mitigate such malicious activities, ensuring the integrity and security of the network.This advanced DAG mining protocol enables REVOLT Chain to maintain a secure, efficient, and scalable blockchain network, resistant to common attack vectors while supporting high transaction throughput.

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Last updated 4 months ago

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