# P2share: how to turn any network (or testnet!) into a bitcoin miner

**URL:** <https://delvingbitcoin.org/t/p2share-how-to-turn-any-network-or-testnet-into-a-bitcoin-miner/2093>\
**Category:** Protocol Design\
**Tags:** mining-pools, mining\
**Created:** [November 7, 2025, 1:06am UTC](https://delvingbitcoin.org/t/p2share-how-to-turn-any-network-or-testnet-into-a-bitcoin-miner/2093 "2025-11-07T01:06:05Z")\
**Posts on this page:** 1\
**Showing post:** 29

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**Author:** ![pojeyuhu](https://delvingbitcoin.org/user_avatar/delvingbitcoin.org/pojeyuhu/32/2459_2.png) [@pojeyuhu](https://delvingbitcoin.org/u/pojeyuhu)\
**Post date:** [October 26, 2026, 8:36pm UTC](https://delvingbitcoin.org/t/p2share-how-to-turn-any-network-or-testnet-into-a-bitcoin-miner/2093/29 "2026-10-26T20:36:50Z")

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A sharechain can reject a miner’s share for an invalid coinbase, but it can’t make Bitcoin enforce that payout. A miner who finds a valid mainchain block can redirect the reward to themselves and publish it anyway; the sharechain can only impose an off-chain penalty. That seems like the central incentive problem: what stops miners from doing this when the selected shareholder isn’t them?

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_[View the full topic](https://delvingbitcoin.org/t/p2share-how-to-turn-any-network-or-testnet-into-a-bitcoin-miner/2093)._