Fractal Bitcoin (FB) mining pool

Earn Fractal Bitcoin for free while mining BTC, or point your hashrate straight at FB on its own ports.

Connect your miner

# Fractal Bitcoin on BCMonster
URL: stratum+tcp://bcmonster.com:5555
User: YOUR_FB_ADDRESS.workername
Pass: x (pool) — or m=solo (solo)

Use a Fractal Bitcoin (FB) address as the username. Add .anyname after it to name each machine.

Ports for every miner size

Tier	For	Start diff	Pool port	Solo port
Standard	up to 99 TH/s — Bitaxe, NerdQAxe, home ASICs	20K	`5555`	`5557`
Pro	100–499 TH/s and NiceHash / MRR / Braiins rentals	500K	`5556`	`5558`
Elite	500+ TH/s — big rigs, farms, large rentals	3.5M	`5559`	`5560`
ESP32 lottery	NerdMiner, NMMiner and other ESP32 boards	0.001	`9983`	`9993`

Not sure which tier? Pick by one machine's hashrate, or open Quick Connect on the dashboard and choose your miner.

About Fractal Bitcoin mining

Fractal Bitcoin launched in September 2024 as a Bitcoin scaling layer that runs the Bitcoin protocol as a separate SHA-256 chain with ~30-second blocks. Some FB blocks can be merge-mined with Bitcoin and the rest must be mined directly.

Two ways to mine FB here: mine BTC on our Bitcoin ports and add an FB payout address to your wallet profile (free merge mining), or connect directly to the FB ports below for direct FB mining. See the Fractal Bitcoin direct dashboard.

Why mine FB on BCMonster

Solo or pool on every port. Password x = pool (PPLNS), m=solo = solo (you keep the whole block). Or use the dedicated solo port.
Flat 1.5% fee, pool and solo. Payouts are checked every 2 minutes.
AsicBoost (version rolling) on every port, Stratum V2 on every Standard, Pro and Elite port, and BCMonster Rapid Tune difficulty that settles in minutes.
No account or sign-up needed — your wallet address is your login. Live stats on your own worker page.

Minimum payout: 0.0001 FB.

Common questions

What is the BCMonster Fractal Bitcoin stratum address?

stratum+tcp://bcmonster.com:5555 (Standard), 5556 (Pro / rentals), 5559 (Elite), or 9993 for ESP32 lottery miners. Username is your FB address, password x for pool or m=solo for solo.

Can I solo mine Fractal Bitcoin on BCMonster?

Yes. Set the password to m=solo, or use the solo ports (5557 Standard, 5558 Pro, 5560 Elite). If you find a block you keep the whole reward minus the 1.5% fee.

Is Fractal Bitcoin merge mined with Bitcoin on BCMonster?

Yes. Every BTC miner on BCMonster merge mines FB for free — add an FB payout address in your wallet profile. You can also mine FB directly on ports 5555 / 5556 / 5559.

More answers in the full FAQ, or ask in the pool chat.

More mining guides

Bitcoin · Bitcoin Cash · DigiByte · Peercoin · eCash · Bitcoin II · Bitcoin Cash II · Namecoin · Verus · Bitaxe · NerdMiner · Rent hashrate · Stratum V2

Updated 2026-11-02 · All coins and miners