[ANN] FlowCoin (FLC) — Keccak-256d PoW | Written from scratch in C++20 | Mainnet

[kristian_pilatovich_2]

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██  FlowCoin (FLC) — Keccak-256d Proof-of-Work  ██
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Website: https://flowcoin.org
GitHub: https://github.com/KristianPilatovich/flowcoin
Telegram: https://t.me/flowcoin_main
Discord: https://discord.gg/CPUZHNSzu2

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What is FlowCoin?

FlowCoin is a cryptocurrency written from scratch in C++20.
Bitcoin-compatible wire protocol, but with Keccak-256d Proof-of-Work instead of SHA-256d.

No fork. No copy-paste. Every line of code is original.

Why Keccak-256d?

Bitcoin's SHA-256d is dominated by ASICs — six mining pools control ~95% of hashrate.
FlowCoin uses Keccak-256d (double Keccak-256, original padding 0x01, not NIST SHA-3).
Efficient on both CPUs and GPUs. No ASIC advantage. Fair mining for everyone.

Specifications

Algorithm	Keccak-256d (double hash)
Total Supply	21,000,000 FLC
Block Reward	50 FLC
Block Time	10 minutes
Halving	Every 210,000 blocks
Difficulty Retarget	Every 2016 blocks
Signatures	Ed25519
Addresses	Bech32 (fl1q...)
P2P Port	9333
RPC Port	9334
Ticker	FLC
Language	C++20 (written from scratch)

Live Network Stats

• Block height: 8,800+
• Network hashrate: ~230 MH/s
• Active nodes: 5+
• Mainnet since: April 23, 2026
• Blocks until halving: 201,199

Quick Start

Code:

# Start node
./flowcoind -daemon

# Start mining (CPU)
./flowcoin-miner --cookie ~/.flowcoin/.cookie

# Start mining (GPU, OpenCL)
./flowminer-opencl --cookie ~/.flowcoin/.cookie

# Check balance
./flowcoin-cli getbalance

# Send coins
./flowcoin-cli sendtoaddress fl1q... 10.0

Downloads

• Linux (x86_64): Build from source (CMake + GCC/Clang)
• Windows (x64): Pre-built binaries available
• Source: https://github.com/KristianPilatovich/flowcoin

Genesis Block

"Strait of Hormuz closed, oil hits $144 as energy crisis crushes miners 23/Apr/2026 - FlowCoin: CPU-only proof-of-work"

Key Features

• Written from scratch — not a fork of Bitcoin, Litecoin, or anything else
• Bitcoin-compatible — wire protocol, RPC, address format work with existing tools
• Fair mining — Keccak-256d works well on CPU and GPU, no ASIC dominance
• Modern C++20 — clean codebase, no legacy debt
• Ed25519 signatures — faster and smaller than ECDSA
• HD Wallet — SLIP-0010 hierarchical deterministic keys
• Compact Blocks — bandwidth-efficient block relay
• Stratum support — pool mining ready

Roadmap

• ✓ Mainnet launch (April 2026)
• ✓ GPU miner (OpenCL)
• ✓ Wallet encryption
• ✓ Compact blocks
• ◻ Block explorer
• ◻ Exchange listings
• ◻ Mobile wallet

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This is a community project. No ICO, no premine, no dev tax.
Mine it, run a node, build on it.

Seeds: seed.flowcoin.org
DNS Seeds: 188.137.182.41:9333