> ## Documentation Index
> Fetch the complete documentation index at: https://docs.parallaxprotocol.org/llms.txt
> Use this file to discover all available pages before exploring further.
# Mining on a Pool
> How to mine Parallax on a pool with Hashwarp: choosing a pool, connecting, TLS and failover pools.
Mining on a pool combines your hashrate with other miners'. Instead of waiting to find a block on your own, the pool finds blocks together and shares the rewards among its miners, which makes earnings **regular and predictable**. To keep the whole block reward for yourself instead, see [Solo Mining](/hashwarp/solo-mining).
***
## Step-by-step Guide
Parallax pools are listed on [miningpoolstats](https://miningpoolstats.stream/parallax). These take your Parallax address as the user name (checked in October 2026):
| Pool | Scheme, fee | Address | TLS address |
| - | - | - | - |
| [coolpool.top](https://coolpool.top/pool/prlx) | PPLNS 1% | `prlx.coolpool.top:3003` | |
| [coolpool.top](https://coolpool.top/pool/prlxsolo) | SOLO 1.5% | `prlx.coolpool.top:3002` | |
| [cedric-crispin.com](https://parallax.cedric-crispin.com) | PPLNS 0.1% | `parallax.cedric-crispin.com:4554` | |
| [pool.ion.cool](https://pool.ion.cool/parallax) | PPLNS 1% | `pool.ion.cool:33350` | |
| [rplant.xyz](https://pool.rplant.xyz) | PPLNS 1% | `stratum-.rplant.xyz:7159` | `stratum-.rplant.xyz:17159` |
rplant's regions are `eu`, `na`, `asia` and `ru`; coolpool also has `eu.`, `us.` and `asia.` hosts. [gtpool.io](https://gtpool.io) takes its own account ID instead of an address. Hashwarp's first-run wizard offers these pools too.
Prefer a pool that finds less than half of the network's blocks. A pool with the majority can reverse payments and block transactions, which puts the coin you mine at risk. The [Parallax status page](https://status.parallaxprotocol.org) shows each pool's share, and Hashwarp [warns you](#pools-with-the-majority) when your pool has the majority.
```bash theme={null}
hashwarp --pool : --wallet --worker rig1
```
Replace `:` with the pool's address and `` with your Parallax address.
* Add `--tls` for a TLS port.
* The worker name (`rig1`) tells your rigs apart on the pool's dashboard.
* No password is required for most pools.
Or run `hashwarp` without options and answer the wizard's questions: see [Configuration](/hashwarp/configuration).
Each share the pool accepts is logged:
```
16:12:42 INFO share ✔ accepted gpu0 · diff 8.59 GH · 364 ms · A42
```
The line shows the GPU that found it, the share's difficulty, the time the pool took to answer and the shares so far. A rejected share is a warning with the pool's reason.
Most pools have a web dashboard where you enter your address to see your hashrate as the pool sees it, accepted shares, pending rewards and payouts. It can take a few minutes to show a new rig.
***
## Options
| Option | Meaning |
| - | - |
| `--pool` | `host:port`, or a URL (see below). Repeat it or separate pools with commas: the next pool is used when one fails |
| `--wallet` | Your Parallax address. Also read from the `HASHWARP_WALLET` environment variable |
| `--worker` | The rig's name on the pool's dashboard |
| `--password` | Pool password, `x` by default |
| `--tls` | Connect to `host:port` pools with TLS |
| `--esm` | Stratum flavour, when a pool needs one (see below) |
| `--pool-retries` | Connection attempts before moving to the next pool (3) |
| `--retry-delay` | Seconds before reconnecting (5), doubled after each failed attempt up to 120. A single pool is retried forever |
| `--failover-timeout` | Minutes on a failover pool before trying the first one again (0: stay) |
| `--report-hashrate` | Send the hashrate to the pool, for pools that show it |
See [all options](/hashwarp/options#pool) for the timeouts.
### Failover pools
```bash theme={null}
hashwarp --pool a.example.com:3333,b.example.com:3333 --wallet --worker rig1
```
Hashwarp mines on the first pool and moves to the next when the first fails `--pool-retries` times in a row. With `--failover-timeout 30` it tries the first pool again after 30 minutes on another.
### Pool URLs
Pools can also be given as URLs, which is how ethminer and Hashwarp 1.x took them (`-P` still works):
```bash theme={null}
hashwarp --pool stratum+ssl://pool.example.com:4443 --wallet
hashwarp -P stratum2+tcp://.rig1@pool.example.com:3333
```
The scheme is `stratum`, `stratum1` (EthProxy), `stratum2` (EthereumStratum/1.0.0) or `stratum3` (EthereumStratum/2.0.0), followed by `+tcp`, or `+ssl` / `+tls` for TLS. If the URL has no wallet, `--wallet` and `--worker` are added.
### Stratum flavours
Pools speak one of several Stratum dialects. By default Hashwarp tries EthereumStratum/1.0.0, then EthProxy, then plain Stratum, and logs the one the pool accepted:
```
12:00:00 INFO pool Protocol EthereumStratum/1.0.0
```
If a pool needs a particular one, `--esm` sets it: `0` EthProxy, `1` or `2` EthereumStratum/1.0.0 (NiceHash), `3` EthereumStratum/2.0.0. EthereumStratum/2.0.0 is only used with `--esm 3`.
### Difficulty
Pool difficulty is counted in units of 232 hashes, like the pools count it: difficulty 1 is a share every 4.29 billion hashes on average. Hashwarp writes difficulties in hashes, so a pool difficulty of 2 is `diff 8.59 GH`.
***
## Pools with the majority
A pool that finds more than half of the blocks can reverse payments and block transactions. Hashwarp reads the pools' shares of the last 7 days' blocks from [status.parallaxprotocol.org](https://status.parallaxprotocol.org) every 10 minutes. When your pool has the majority it says so at startup and then every hour, with the smaller pools to move to:
```
05:26:47 WARN pool rplant.xyz found 86% of the network's blocks in the last 7 days. A pool with the majority can reverse payments and block transactions, which puts the coin you mine at risk
05:26:47 WARN pool Please mine on a smaller pool (coolpool.top 13% · gtpool.io 1%) or solo (--solo). https://status.parallaxprotocol.org has the figures; --no-pool-check hides this
```
The [dashboard](/hashwarp/dashboard) shows it too, and the first-run wizard lists such a pool last.
* Hashwarp never changes pools by itself: moving is your choice.
* The request sends nothing about you or your rig, only Hashwarp's version as the User-Agent. If it fails, Hashwarp carries on mining without a word.
* It doesn't run when solo mining, in simulation, `--selftest` or `--oc-tune`.
* `--no-pool-check` turns it off.
***
## Tips & Troubleshooting
* **Rejected shares** with a reason like `low difficulty`: the pool may need another Stratum flavour; try `--esm`. **Wrong results** (the `F` count): lower the GPU's overclock.
* Choose a pool with servers close to you: the share latency in the log should stay well under a second.
* Make sure your address is right: rewards sent to a wrong address can't be recovered.
* More in [Troubleshooting](/hashwarp/troubleshooting).
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