THE BITCOIN GOLD PROTOCOL

01. Abstract & Introduction

Bitcoin Gold (BTGS) is an autonomous, decentralized cryptographic ledger built upon the robust SHA-256 Proof-of-Work (PoW) consensus mechanism. Unlike contemporary protocols that prioritize speed over security, BTGS is engineered for absolute finality and long-term data permanence. By constraining the total supply to 26,000,000 units and implementing a rigid 10-minute block interval, BTGS establishes a mathematical framework for digital scarcity that mirrors the physical properties of gold.

The primary objective of BTGS is to provide an industrial-grade Layer-1 solution where digital artifacts—via the BCG-20 standard—can exist indefinitely. This document outlines the mathematical rigor behind the 1008-block difficulty adjustment and the cryptographic safeguards that protect the 23,500,000 BTGS community allocation from central manipulation.

02. SHA-256 Hashing Mechanics

The core of BTGS security is the Double-SHA256 (dSHA256) function. Each block header, comprising the version, previous block hash, Merkle root, timestamp, bits (target), and nonce, is serialized and passed through two successive rounds of hashing. This specific architecture is chosen for its compatibility with existing global hashing infrastructure, allowing BTGS to inherit the security of the most powerful hardware networks in the world.

03. Block Timing & Target Spacing

BTGS adheres to a strict 600-second (10-minute) block target. This parameter is critical for minimizing the stale block rate and ensuring that transactions are validated by a globally distributed set of nodes without geographical bias. The 10-minute window allows for complete Merkle Tree verification and propagation across high-latency network routes, ensuring the network remains unified.

04. The 1008-Block Adjustment Logic

The difficulty of finding a block is adjusted every 1008 blocks. This calculation is based on the time taken to find the previous 1008 blocks compared to the target time of 10,080 minutes. If the network hashrate increases, the difficulty increases to maintain the 10-minute block time, and vice versa. This ensures that the 26 million supply is emitted according to the deterministic schedule, regardless of hardware advancements.

The 1008-block window is strategically chosen to provide stability against "hashrate hopping" and temporary surges in computational power. It ensures a predictable environment for industrial miners who require consistency in block rewards over weekly operational periods.

05. Monetary Policy: 26M Supply Cap

BTGS implements a hard supply cap of 26,000,000 BTGS. The emission is structured as follows:

• Total Max Supply: 26,000,000 BTGS (Non-Inflatable).
• Community Mining Allocation: 23,500,000 BTGS (90.4%).
• Developer Infrastructure Fund: 1,500,000 BTGS (5.7%).
• Burning Coin: 1,000,000 BTGS (3.8%). Address : "bcg1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqnmxfsvxdead"
• Block Reward: 50 BTGS initially, halving every 110,000 blocks.

The Developer Fund is reserved for protocol maintenance, third-party security audits, and the deployment of global Electrum infrastructure. This small percentage ensures that the project remains technically sound without compromising its decentralized nature.

06. BCG-20 Inscription Architecture (Runes, Tokens, NFTs)

The BCG-20 standard represents a cutting-edge native meta-protocol built directly over the Bitcoin Gold sovereign layer. It allows for advanced inscription of cryptographic Runes, fungible tokens, and complex non-fungible artifacts (NFTs) natively inside the block transactional architecture. Inspired heavily by structural extensions like BRC-20, BCG-20 bypasses any requirement for external smart contracts by embedding protocol instruction states cleanly inside the raw witness and transaction data space. This converts the robust SHA-256 base network into a fully comprehensive, hyper-secure multi-asset ecosystem.

This architecture allows for the creation of unique digital assets that are as secure as the underlying network. The 10-minute block time provides a fair auction environment for inscriptions, preventing the high-fee wars commonly seen on faster, congested chains.

07. Global Propagation & Node Infrastructure

The BTGS P2P network utilizes a gossip protocol for transaction propagation. Nodes connect via DNS seeds and exchange block headers and data. The integration of LevelDB ensures high-performance storage of the blockchain state, allowing for rapid node synchronization.

Every transaction is verified against the UTXO (Unspent Transaction Output) set. This prevents double-spending and ensures that only valid BTGS are circulated. The 18888 port is the official gateway for P2P traffic, while 18881 serves as the RPC interface for developers and exchanges.

This technical documentation serves as the definitive guide for the BTGS ecosystem. Every parameter, from the 26M supply to the 1008-block difficulty window, is designed to create a lasting, decentralized legacy in the world of Proof-of-Work.