Fractal Bitcoin mining pool

Mine or Stake Fractal Bitcoin on PrimeTriad

Permissionless Stratum pool + Indexer Staking on dedicated hardware. Connect any miner or stake FB — no signup.

Independent Fractal Bitcoin mining pool.

Hybrid PPS+ — no signup, 1.5% fee, 2 FB finder, verify on-chain.

  • Live
  • Fee 1.5%
  • Finder 2 FB
  • Min payout 0.1 FB / 6h
  • Last payout —
  • Buffer —
Start Mining Start Staking

No signup. Point stratum and hash.

Works with Zyber Blanc, Zyber 12G, Bitaxe, NerdAxe, Antminer S19j Pro and any other SHA-256 miner. Setup guides

The Platform

Three ways to earn on PrimeTriad

Stake with PrimeIndexer, mine Hybrid PPS+, or solo merge-mine Bitcoin + Fractal — all on hardware we run.

Production

Index Mining

Stake FB with PrimeTriad’s FIP-101 indexer. Track proofs, unstake when you want, and claim allocated rewards from the same dashboard.

  • Always-on Fractal full node
  • Proof publishing & arrival maps
  • Connect a UniSat wallet and manage your position on-chain
  • Allocated index rewards with live APR and pending balance
  • See who indexed each block first across the network
  • Bind PrimeIndexer (1 FB min)

Index Mining allocates a share of Fractal block rewards to indexers. Staking on PrimeIndexer is non-custodial Taproot staking — you keep control of your FB while earning allocated rewards.

Stake on PrimeIndexer

FIP-101 is live. See FIP-101 staking guide and indexing overview.

Live

Permissionless Mining

Point ASICs at Fractal — Hybrid PPS+, finder bonus, and on-chain payouts.

  • No signup — just your FB address
  • 1.5% fee · Hybrid PPS+
  • Paid on-chain to your wallet
  • Hybrid PPS+ share credits + 2 FB finder
  • Hashrate, workers, blocks, and payouts
Pool Dashboard
Live Solo · 1.5% fee

Solo Merged Mining

One ASIC hash settles both ledgers — Bitcoin and Fractal, same energy, separate rewards.

  • BTC + FB AuxPoW · one Stratum
  • Finder keeps the block reward
  • Shared hashrate, two ledgers
  • Full block reward minus 1.5% fee
  • Solo payouts · not Hybrid PPS+
Open Solo Merged Mining Dashboard

Compound mining

Turn Hybrid PPS+ into Index Mining stake

Official Binding starts at 1 FB. Compound only works after you Bind PrimeIndexer and link pool payouts to that stake address — Binding alone is not enough.

Open staking to Bind Link payouts on dashboard

Use the same FB address for Stratum, UniSat, Binding, and the compound toggle. Finder 2 FB still pays the mining address. Solo Merged Mining (3340–3342) is a separate product and does not compound.

  1. 1
    Mine Hybrid PPS+

    Point your miner at ports 3334–3336. Username is the same FB address you will stake with. Password is x.

  2. 2
    Bind PrimeIndexer (1 FB min)

    Open My Staking, connect UniSat with that address, and stake at least 1 FB to PrimeIndexer (1818297:10). That on-chain Binding creates your stake address.

  3. 3
    Wait for confirmation

    Let the Binding confirm. If compound still says “no Binding,” refresh after a few blocks — do not toggle yet.

  4. 4
    Link PPS+ to the stake address

    On the pool dashboard, look up your miner, connect UniSat, select the PrimeIndexer Binding, and turn on “Pay PPS to stake address.” That link is what makes compound work.

Live

Platform stats

Live Index Mining, Hybrid PPS+, and Solo Merged Mining (BTC+FB).

Home

Index Mining

Updating…
Total Staked —
APR —
Running Score —
Reward allocation height —

Permissionless Mining

Pool Hashrate 354 TH/s
Active Miners —
Active Workers —
Network Share —
Chain Tip —
Pool Status —

Solo Merged Mining

Live
Pool Hashrate —
Live Miners —
BTC Height —
FB Height —
Pool Status —

Loading live pool stats…

FIP-104 DRAFT : Miner-Only Index Mining Top-Ups via Allowlisted Mining Pools

How Rewards Work

Two Stratum products, two payout models

Hybrid PPS+ pays Fractal per accepted share on ports 3334–3336. Solo Merged Mining pays the full block reward minus 1.5% to whoever finds a BTC or FB block on ports 3340–3342. Index Mining rewards are claimed from staking, not Stratum.

Hybrid PPS+

Stable FB per accepted share

Ports 3334–3336 · username is your FB address

01

Block finder

2 FB

Paid in the coinbase to the miner who found the block

02

Platform fee

1.5%

Taken from PPS gross credit — operator fee, transparent

03

Contributors

PPS+

FB credited per share from network difficulty × reward rate

Credits accrue as you submit shares. Threshold auto-payouts send on-chain FB to the address in your worker name.

Check live rate & buffer →

Solo Merged Mining

Find a block, keep the reward

Ports 3340–3342 · not Hybrid PPS+ · BTC username, FB password

01

Block finder

Full block − 1.5%

The miner who finds a BTC or FB block gets that block’s whole coinbase (subsidy + fees) minus the 1.5% fee

02

Platform fee

1.5%

Taken from the found block’s coinbase; stays in the pool treasury

03

Other miners

No split

Solo: there is no share window. Each block pays only its finder

When your share finds a BTC or FB block, you are paid on-chain after 100 confirmations: the full block reward minus 1.5%. Bitcoin to your username; Fractal to the FB address in your password. This is not per-share PPS+.

Open Solo Merged Mining dashboard →

Get Started

Connect your miner

Point any Stratum-compatible miner at the endpoint below. Username is your Fractal Bitcoin address — no signup.

  • Hybrid PPS+
  • 1.5% fee
  • 2 FB finder
  • Ports 3335 / 3334 / 3336

Worked example

Username
your_fb_address.worker1
Password
x (or d=32 for custom diff)
PPS+ ports
3334–3336
Desk ASIC
Zyber/Bitaxe / sub-TH → :3335. Zyber 8G / 12G → :3334.
  1. 1
    Open miner settings

    ASIC controller, Zyber/Bitaxe web UI (often 192.168.4.1), or any Stratum client.

  2. 2
    Paste Stratum URL

    Copy the URL from the settings card — host and port must match.

  3. 3
    Username = FB address

    Optional worker: your_fb_address.ZyberBlanc (bigger box: .zyber12g). Named workers show on the found-block list. Payouts still go to the address.

  4. 4
    Confirm shares

    Check accepted shares on-device, then open the Pool Dashboard.

About

Operator-built infrastructure for Fractal Bitcoin

Permissionless mining and indexing on dedicated hardware we operate — built for serious Fractal Bitcoin operators who want transparent, self-hosted infrastructure.

Self-hosted

Node, indexer, and pool run entirely on dedicated hardware we operate — for control, reliability, and transparency.

Transparent fees

1.5% fee, Hybrid PPS+ credits, and 2 FB finder bonus are published. Payouts are on-chain.

Index + pool

Index staking, Hybrid PPS+, and Solo Merged Mining (BTC+FB) — live on PrimeTriad.

FAQ

Questions by mining type

Index Mining, Hybrid PPS+, and Solo Merged Mining each have their own connection path and payout rules.

Index Mining

Stake FB on PrimeIndexer

Not Stratum. Rewards come from indexer allocation, claimed on-chain from the staking dashboard.

How do I stake on PrimeIndexer?

Open the staking dashboard, connect UniSat, then stake at least 1 FB to PrimeIndexer. That creates the FIP-101 Binding. You can unstake and claim allocated rewards from the same UI.

How are Index Mining rewards paid?

PrimeIndexer earns protocol index rewards as it indexes Fractal blocks. Allocated FB accrues to your stake; you claim it on-chain from the staking UI. This is not Hybrid PPS+ and not Solo Merged Mining.

Is Index Mining the same as the mining pool?

No. Index Mining is FIP-101 staking to PrimeIndexer. The Stratum pool is a separate product: Hybrid PPS+ on ports 3334–3336, or Solo Merged Mining on 3340–3342.

How do I compound mining into staking?

Mine Hybrid PPS+ with your FB address, Bind at least 1 FB to PrimeIndexer with the same wallet, then on the pool dashboard toggle “Pay PPS to stake address.” Binding without that link still pays your mining address.

Permissionless Mining

Hybrid PPS+ (ports 3334–3336)

Fractal-only Stratum. Username is your FB address. Password is x or a difficulty floor.

How do I connect my miner?

Use Stratum URL stratum+tcp://pool.primetriad.com:3334 (Europe: eu.pool.primetriad.com:3334, Asia: sg.pool.primetriad.com:3334), username = your Fractal Bitcoin address, password x. Works with ASICs, Zyber/Bitaxe, and any Stratum-compatible miner. No account or API key required. Confirm shares on pool.primetriad.com.

What fees and rewards should I expect?

Hybrid PPS+: each accepted share earns FB credit from the published rate after a 1.5% fee. The miner who finds a block also receives a 2 FB coinbase bonus. Minimum payout is 0.1 FB, paid on-chain every 6h.

Do you pay via Lightning?

No. Fractal Bitcoin does not have Lightning. PrimeTriad pays on-chain FB to the address in your worker name.

Is this a permissionless pool?

Yes. Anyone can connect with a valid FB address. There is no KYC, whitelist, or registration. Hashrate is pooled; payouts follow published share accounting.

Where is live hashrate and miner data?

The public dashboard at https://pool.primetriad.com shows pool hashrate, workers, blocks, and payouts in real time.

Solo Merged Mining

Solo Merged Mining: BTC + FB AuxPoW (ports 3340–3342)

Separate stack from Hybrid PPS+. One hash, two chains; each block pays its finder. Username is Bitcoin; password is Fractal.

How do I solo merge-mine Bitcoin and Fractal?

Use a different port than Hybrid PPS+. Default stratum+tcp://pool.primetriad.com:3341 (Zyber/Bitaxe :3340, high :3342). Same hosts in EU and Singapore. Username is your Bitcoin bc1 address (optional .worker). Password is your Fractal Bitcoin bc1 address, optionally ,d=120000 — not x. Solo Merged Mining pays the block finder the full reward minus a 1.5% fee; it is not Hybrid PPS+.

How does Solo Merged Mining payout work?

If your share finds a block on either coin, you get that block’s whole coinbase minus the 1.5% fee — nobody else shares it. After 100 confirmations the pool sends Bitcoin to your Stratum username and Fractal to the FB address in your password.

Can I use the same ports as Hybrid PPS+?

No. Hybrid PPS+ is 3334–3336. Solo Merged Mining is 3340–3342. Pointing a merge miner at 3334 will not AuxPoW Bitcoin. Password x is refused on 3340–3342 — it needs a valid FB address.