PPLNS (Pay Per Last N Shares) earnings can continue to appear after you stop mining because previously submitted work may still qualify for rewards, and eligible rewards may still be awaiting confirmation and settlement. Stopping a machine stops new share submissions; it does not instantly remove earlier contributions from the pool's accounting window. New credits after shutdown do not, by themselves, indicate an accounting error.
ViaBTC's published PPLNS rules calculate rewards using a miner's proportion of pool hashrate over the last five difficulty rounds, with calculation when the relevant pool-found block completes six confirmations. The contribution window determines which work counts toward a reward; confirmation and settlement determine when that reward can be credited (ViaBTC Help Center).
The PPLNS timeline
The sequence behind a post-stop credit follows this pattern:
- The miner submits valid shares while the worker is online, and the pool records them as evidence of contributed computational work. In Bitcoin pooled mining, shares meet the pool's easier share target; most do not meet the network's harder block target (Bitcoin Developer Guide: Mining).
- The miner stops and no longer submits new shares, but earlier shares may remain inside the pool's PPLNS window.
- The pool finds a block. The miner may participate in its reward distribution if their earlier work is eligible within the window applicable to that block.
- Once the block satisfies the pool's confirmation requirement, the corresponding reward can be settled based on eligible contributions.
- As the window advances, the offline miner's earlier work eventually falls outside the windows used for later blocks. It then stops qualifying for those later rewards, although previously eligible rewards may still be awaiting settlement.
A block found before shutdown can also produce a credit afterward if confirmation and settlement are still pending. The time a credit appears therefore does not show when the miner performed the work behind it.
Why the credited amounts vary
The amount of an individual PPLNS reward depends on the miner's proportion of eligible contributed work, the reward available from that pool-found block, and the applicable pool fee. For Bitcoin, the block reward includes the block subsidy and transaction fees, which can differ between blocks.
Over a period of time, the pool's block-finding results also affect total earnings. ViaBTC states that PPLNS earnings are positively correlated with pool luck: finding more or fewer blocks than statistically expected affects the rewards available for distribution (ViaBTC Help Center).
Confirmation and settlement timing affect when those rewards appear in the account. These timing effects should be distinguished from differences in the amount allocated for each block. New post-stop credits do not, by themselves, mean that earlier credited rewards have been recalculated.
Settlement credit versus wallet payout
A change in the pool account and a change in an external wallet balance are distinct events governed by different rules.
| What the miner observes | What it typically means |
|---|---|
| New PPLNS income appears after the miner stopped | Earlier work qualified for a block's reward, which was settled after shutdown |
| Pool-account balance rises following a mining credit | A reward was credited internally; this is not automatically an on-chain transaction |
| External wallet balance is unchanged | The withdrawal threshold, schedule, or selected payout mode may not yet have triggered |
| Estimated daily earnings figure changes | An estimate is a projection, not a finalized PPLNS settlement |
ViaBTC's documentation lists a minimum of 0.001 BTC for BTC Auto Withdrawal to an external address, with processing once daily between 10:00 and 18:00 (GMT+8) when the applicable conditions are met (ViaBTC Help Center). These withdrawal parameters govern when funds leave the pool account; they do not change how PPLNS rewards are calculated. If a new internal credit has no corresponding wallet transaction, check withdrawal settings separately from the reward record.
When do post-stop PPLNS rewards end?
There is no universal countdown that applies to every pool. Earlier work stops qualifying for later block rewards once it falls outside the applicable PPLNS window. The last visible credit may arrive later because a previously eligible reward is still awaiting confirmation or settlement.
ViaBTC describes its window as the previous five difficulty rounds. The cited calculation guide does not define that unit in enough detail to convert it into a fixed number of hours or days. It should not be interpreted as five Bitcoin network difficulty-adjustment periods. For a specific post-stop credit, check the relevant reward record and ask ViaBTC support to clarify the applicable window if needed.
Practical checklist for reviewing post-stop earnings
Before assuming a problem exists:
- Confirm the selected payment method and the reward component being reviewed. ViaBTC's PPS+ and PPLNS explainer explains their different structures; PPS+ also uses PPLNS for its transaction-fee component.
- Review the pool's contribution-window and confirmation rules, keeping reward eligibility separate from settlement timing.
- Identify whether the changing figure is an estimate, a settlement credit, an account balance, or an external withdrawal.
- Compare new reward records with the worker's shutdown time, allowing for eligible rewards that settle afterward.
- Check the withdrawal mode and minimum payout amount separately from mining reward history.
On ViaBTC, operating status and profits are available on the Workers and Earnings pages (BTC Mining). Payment-method changes are made through Pool → Mining Settings → Change payment method (payment-method guide). Auto Withdrawal is configured through Assets → My Assets for the relevant coin (withdrawal guide).
FAQ
Does PPLNS pay a fixed amount for every share submitted?
No. PPLNS distributes rewards from pool-found blocks according to eligible contributions within a recent window. PPS instead pays for accepted shares based on their expected reward value under the applicable difficulty and payment rules, independently of whether the pool actually finds a block.
Does stopping mining reduce a previously credited PPLNS reward?
Stopping mining does not, by itself, mean that earlier credited rewards are repriced. It stops new contributions and eventually ends eligibility for later block rewards. If a specific settled reward record changes, check that record with the pool; the post-stop settlement mechanism described here does not establish why an individual adjustment occurred.
Is the five-round PPLNS window the same at every mining pool?
No. The figure discussed here is ViaBTC's published rule. Other pools may define their PPLNS windows differently, so check the specific pool's documentation rather than assuming a universal accounting period.
References
- ViaBTC Help Center: How are profits calculated?
- ViaBTC Help Center: How to Choose the Optimal Payment Method (PPS+, PPLNS)?
- ViaBTC Help Center: What Is Auto Withdrawal? How to Set Up and Manage It?
- ViaBTC Help Center: BTC Mining
- ViaBTC: What Payout Method Does ViaBTC Use? PPS+ and PPLNS Explained
- Bitcoin Developer Guide: Mining