Mining Share is a hashing result for an assigned mining job that meets the pool target. It samples work performed; it usually does not meet the stricter requirement for a Bitcoin block.
The pool does not inspect every ASIC attempt. A submitted result lets it verify work on a specific job and statistically estimate the miner’s contribution. Mining Share is neither a transferable ownership share in bitcoin nor a Bitcoin transaction. [Bitcoin Developer Guide — Pool mining]
A pool normally uses a numerically higher, easier target than the network. A hash meeting the pool target may therefore miss the network target. If it meets both, it can support a block; the block must still satisfy all other validity rules. [Bitcoin Developer Guide — Pool mining]
In Stratum V2, SubmitSharesStandard includes job_id, nonce, ntime, version and channel identification. The pool validates the result in the assigned job’s context. The same nonce without that context is not standalone proof of useful work. [Stratum V2 — Mining Protocol]
Under the same normalization convention, two accepted submissions at difficulty 1024 have the same combined weight as one at difficulty 2048. This means neither the same number of messages nor an exactly measured hash count; check what the pool counter calls shares. [Braiins Academy — Pool FAQ]
Stratum V2 allows batched SubmitShares.Success. The new_submits_accepted_count field counts accepted submissions, while new_shares_sum totals their difficulties. Both values concern the acknowledged batch, not automatically lifetime totals. [Stratum V2 — Mining Protocol]
Stratum V2 returns SubmitShares.Error with the submission’s sequence_number for incorrect work. Validation may be delayed. Separate locally sent results from confirmed accepted ones; investigate error responses instead of counting every sent result as accepted. [Stratum V2 — Mining Protocol]
Accepted work enters the pool’s reward rules. Braiins FPPS, for example, calculates rewards from work and network quantities, deducts a fee and uses separate payout settings. A share acknowledgement does not itself send BTC to a wallet. [Braiins Academy — Rewards and payouts]
Shares and blocks arise from random searches for sufficiently low hashes. More evidenced work improves the statistical basis but does not make the next attempt a certain success. Even a long run of accepted shares cannot guarantee a block on a particular next attempt. [Braiins Academy — Pool FAQ]
For the clearest picture, read this entry together with Mining Pool, Share Difficulty, Proof of Work, Mining Target. The reverse links also lead from Mining Pool, Stratum V1, Pay Per Share, Pay Per Last N Shares.