Is Bitcoin Purity (BTC1) a good fork to mine?

It passes the basics as of late 2026: twelve independent pools, working releases, honest safety docs, active community. Its weakness is liquidity — no major listings yet, so treat rewards as a long-term hold.

What is a zombie chain?

A fork with negligible mining decentralization (often one self-run pool), no exchanges, and no development activity — kept alive artificially to sell a narrative or premined coins.

Why do forks skip replay protection?

Some fork projects want their chain to be 'the real Bitcoin', so they deliberately keep transaction formats identical. It's a political statement with real safety costs — users must separate addresses per chain to avoid replayed spends.

The fork test: five questions before you point your miner at a chain

MineCraft Pool · 2026-10-10 · research

TL;DR — A real fork has: independent miners across several pools, a working full node you can run, at least one exchange or organic marketplace, and honest documentation of replay risks. A zombie has one pool, a premine, no listings, and a chart that only goes sideways. Check those four signals before dedicating hashrate or money.

SHA-256's great advantage — anyone can fork Bitcoin's battle-tested code — is also its curse: every month brings another 'fix' for Bitcoin. Most die quietly. Some, like Bitcoin Purity (BTC1) in 2026, build genuine communities. Here's the checklist we use before adding a chain to the pool.

1. Who actually mines it?

Open the chain's explorer and look at the last 100 blocks. A living chain shows several independent pools plus some solo miners — on BTC1 in late 2026, twelve pools split roughly a thousand weekly blocks, none above 50%. A zombie shows one pool (often run by the project itself) finding 95% of blocks, or days-old block timestamps.

2. Can you run the node?

Real projects ship working releases — signed binaries for Linux/Windows/macOS, a sane sync (checkpoints, seeds that actually connect). If 'the wallet' is a paper whitepaper and a GitHub with no releases, walk away. Bonus points for honest docs: Purity, for example, plainly states its deep-reorg parking policy and that replay protection between it and legacy Bitcoin does not exist — that kind of candor is a good sign, not a flaw.

3. Where does value come out?

Not every chain needs a Binance listing. But there should be some exit: one working exchange, an OTC community group with real volume, or in-chain utility people actually pay for. Zero exits means the price is whatever one Discord member says — until it isn't.

4. Replay and safety

For forks of a live chain, ask: if I send coins on the fork, can the same transaction replay on the original? If yes (like Purity's intentional choice), you must use separate addresses per chain. Projects that document this are managing risk; projects that never mention it are exporting it to you.

5. Distribution check

Look at the rich list and the first blocks. A founder holding 40% of supply from a sneaky premine will eventually exercise that option. Fair launches with slowly decaying rewards and organic distribution are rare — and valuable.

What this means for miners

Mining a small chain early is how home ASICs matter (see the ASIC explainer). The playbook: verify the checklist, mine with 0% fee if offered, hold what you find while the community grows, and never mine a chain you wouldn't be willing to hold for six months — because with thin markets, you often will have to.

FAQ

Is Bitcoin Purity (BTC1) a good fork to mine?: It passes the basics as of late 2026: twelve independent pools, working releases, honest safety docs, active community. Its weakness is liquidity — no major listings yet, so treat rewards as a long-term hold.
What is a zombie chain?: A fork with negligible mining decentralization (often one self-run pool), no exchanges, and no development activity — kept alive artificially to sell a narrative or premined coins.
Why do forks skip replay protection?: Some fork projects want their chain to be 'the real Bitcoin', so they deliberately keep transaction formats identical. It's a political statement with real safety costs — users must separate addresses per chain to avoid replayed spends.