Bitcoin mining pool DMND has mined the first known Bitcoin block produced using the Stratum V2 protocol, a technical milestone that shifts control over block construction from pools to individual miners. The block — number 955,318 — was mined through DMND’s pool for GoMining, which became the first miner to use Stratum V2’s Job Declaration feature to select its own transactions and build its own block template, according to a note shared with Bitcoin Magazine. 

Under the dominant model in Bitcoin mining today, miners contribute their computing power to a pool, and the pool decides which transactions go into each block. The miner has no say in that selection. 

Stratum…

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