Coin Mining: What Is an 'Accepted Share'?

In crypto coin mining, 'accepted shares' has a special meaning

Once you're ready to start mining for crypto coins, you'll start learning about shares. Accepted shares and rejected shares represent scorekeeping in your mining software. Shares describe how much work your computer contributes to the mining group.

Why Do Accepted Shares Matter?

More accepted shares are good; it means your work is counting substantially towards discovering new crypto coins. The more accepted shares you contribute, the more pool payout for each coin block that is found. Ideally, you want 100 percent of your shares accepted because that means every computation on your computer is counted towards a coin discovery.

Bitcoin representation in copper coin


What Are Rejected Shares?

Rejected shares represent work that isn't applied toward a blockchain discovery and, therefore, not paid for. Rejected shares typically occur when your computer was busy grinding a crypto coin share problem, and it did not submit the results in time to be counted towards a coin discovery. Rejected share work is discarded.

Rejected shares are inevitable, especially in any mining pool with more than a dozen users. It's just a fact of crypto coin mining.

Serious coin miners configure their graphics processing unit to maximize how often their computer submits work every second.

How Crypto Coin Mining Works

Most crypto coin mining is about solving mathematical problems, which in turn act as raffle tickets. Each problem solved is called a proof of work result and counts as one raffle ticket. Every time a predetermined quantity of proof-of-work results is generated, the system draws a raffle number, and one proof-of-work result is awarded a block of new crypto coins.

Every miner who contributed to solving that particular block will get some kind of proportionate share of the rewards. Without accepted shares, a miner gets nothing.

It's All About Contributing Your Computer Power to the Mining Group

Because proof-of-work problems are difficult to solve, results are best achieved when users combine their computers into a pool, with each person's computer contributing a share of the effort.

As your personal computer achieves its proof-of-work results, it submits its results to the group. The faster you can solve proof-of-work problems, the more results you can submit to the group every minute. If your computer submits its results before the new coin block is found, that's an accepted share. When the group of people is rewarded with newly minted coins, it distributes those earnings across people proportionately by their accepted shares.

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