Bitcoin Gold

Key Technical Advantages:

Equihash PoW and Difficulty Adjustment: Bitcoin Gold has switched to Equihash-BTG as its Proof-of-Work (PoW) algorithm since the hardfork on July 3rd, 2018. The parameters of the Equihash are N = 144, K = 5. Equihash is a memory-hard PoW algorithm that's resistant to ASICs. The difficulty of the PoW adjusts using Zawy's LWMA (Linear Weighted Moving Average) algorithm, a more responsive mechanism for difficulty adjustment compared to the original Bitcoin. Unique Block Header Format: Bitcoin Gold uses a unique block header format compatible with Zcash for miner software support. The block header includes an added field for block height, reserved space, and solution. It also extends the nonce from 32 bits to 256 bits. For post-fork blocks, the full block header is serialized and double SHA256 hashed. Network Parameters and Protocols: Bitcoin Gold uses network protocol version 70016. The mainnet magic value is [e1 47 6d 44] and the default p2p port is 8338. Bitcoin Gold supports Compact Block since v0.17.1 but does not respond to CMPCTBLOCK commands. Address Format and Coin Type: Bitcoin Gold uses version 38 for P2PKH addresses (with base58 prefix ÒGÓ) and version 23 for P2SH addresses (with base58 prefix ÒAÓ) on the mainnet. For Bech32 addresses, it uses 'btg' for mainnet. The BIP44/49/84 HD wallet coin type index is 156 (in hex: 0x8000009c), and it prefers P2WPKH addresses. Replay Protection and Hard Fork: Bitcoin Gold has implemented full two-way strong SIGHASH_FORKID replay protection to prevent transactions from being valid on both the old and new chains after the fork. The first post-fork block was 491407, and 8000 blocks from there (491407 to 499406) are reserved for endowment with minimal difficulty (difficulty = 1). The endowment coins are time-locked with 40% having no time-lock and 60% being unlocked monthly over 3 years. Content summarized by AI chatbot

Source:

https://github.com/BTCGPU/BTCGPU/wiki/Technical-Spec