Pinch (PINCH) is an independent Ethash Proof of Work chain (chain ID 5261646, no premine). Cards that mined Ethereum before the Merge can mine it. This is a setup example for HiveOS.
How it works
- Solo, no pool. A Pinch node runs on the rig next to the GPU miner. Each block you find pays your own reward address. No pool fee.
-
Getwork, not stratum. The node serves Ethash work at
http://127.0.0.1:9560. Use a miner that speaks getwork over HTTP: ethminer. - Balance threshold. A block is valid only if the reward address holds at least the threshold T (0.25% of the mined supply, capped at 25,000 PINCH; about 4,420 PINCH today). Below T the node gives no work and ethminer waits. Reward per block: T 50%, 4×T 60%, 8×T 75%, 20×T 100% of 50 PINCH.
- New miners can get the threshold amount through a starter airdrop in the project’s Telegram group (linked on the website, limited places).
1. Run the node (Hive Shell or SSH)
cd /home/user
wget https://pinch.network/downloads/pinch-miner.zip
unzip pinch-miner.zip && cd pinch-miner
python3 pinch_miner.py start --address 0xYOUR_ADDRESS --gpu
python3 pinch_miner.py service install # keeps the node running after reboots
python3 pinch_miner.py status # block height, peers, threshold, tier
The package downloads the node (core-geth 1.13.0 + the published Pinch patch) and checks it against a SHA-256 hash pinned in its source. Wait until status shows the node in sync before mining.
2. Flight sheet
-
Coin: custom coin
PINCH -
Wallet: your reward address (
0x…) - Pool: Configure in miner
-
Miner: ethminer, pool URL
http://127.0.0.1:9560
Notes
- Each rig needs its own node; the work endpoint listens only on 127.0.0.1.
- Keep a few GB of free disk for the node, the chain and the DAG (~1 GB).
- Stratum-only miners cannot connect to the node directly.
- PINCH lives only on chain ID 5261646. Same-named tokens on other networks are unrelated, except the official wPINCH listed on the website.
- The node reports 0 hashrate for external miners; ethminer shows the real hashrate. Blocks you find are listed under your address in the explorer.
These steps follow the standard ethminer setup and have not been tested on every HiveOS version. If something differs on yours, please reply here.
Full GPU guide and downloads: GPU Mining — Pinch Network
Discussion thread: [GUIDE] Mining Pinch (PINCH) with Ethash GPUs: solo via a local node, incl. HiveOS