ANN][OCT] Octcoin — SHA-512 + Memory-Hard Scratchpad | CPU Mining

OCTCOIN (OCT)
Decentralized. Fair. CPU-Native.
What is Octcoin?
Octcoin is a decentralized peer-to-peer digital currency based on Bitcoin Core 30.0, featuring SHA-512 proof-of-work with a memory-hard scratchpad layer designed for CPU accessibility and GPU resistance. No premine, no ICO, no developer allocation — every OCT in existence was mined through proof-of-work.
Key Specifications
Parameter
Value
Ticker
OCT
Algorithm
SHA-512 + Memory-Hard Scratchpad
Max Supply
21,000,000 OCT
Block Reward
50 OCT
Halving
Every 210,000 blocks (~4 years)
Base Unit
1 OCT = 100,000,000 Ashata
Address Format
Bech32 (oct1…)
Genesis Block
March 29, 2026
License
MIT
Why SHA-512 + Scratchpad?
SHA-512 uses 64-bit word operations natively optimized for modern CPUs. Implementing SHA-512 in an ASIC requires emulating 64-bit operations, approximately doubling gate count compared to SHA-256 ASICs. Additionally, Octcoin adds a memory-hard scratchpad layer that saturates GPU VRAM, making GPU mining inefficient. The result: CPU miners remain competitive against both ASICs and GPUs.
Fair Launch
Zero premine
No ICO
No developer tax
Source code published before network launch
Genesis block contains only the standard 50 OCT coinbase reward
Downloads — v0.10.0
Windows 64-bit: https://github.com/octcoins/octcoin/releases
Linux 64-bit (.deb): https://github.com/octcoins/octcoin/releases
Source code: https://github.com/octcoins/octcoin

Links
Website: https://octcoins.github.io
Whitepaper: https://octcoins.github.io/octcoin.pdf
GitHub: https://github.com/octcoins/octcoin
GitLab: https://gitlab.com/octcoins-group/octcoin
Discord: https://discord.gg/33G9XmeD4
Telegram (channel): https://t.me/OctcoinCommunity
Telegram (chat): https://t.me/OctcoinCommunityChat
Contact
ashata.nakaawa@proton.me
Octcoin Core is released under the MIT license. Based on Bitcoin Core 30.0. No rights reserved.