GoMining has produced the first known Bitcoin block mined using the Stratum V2 protocol — and it did so while remaining part of a mining pool. Working with the DMND pool, GoMining used Stratum V2’s Job Declaration feature to build and declare its own block template, marking an early real-world example of miner-controlled block construction in pooled mining.
Traditionally, mining pools have selected which transactions are included in blocks, effectively deciding block contents on behalf of their miners. With Stratum V2, miners can instead construct and announce their own templates, reclaiming control over transaction selection while still leveraging the shared hashing power and economics of pooled mining. GoMining’s newly mined block demonstrates that this miner-driven model works in production.
The block itself contained transactions tied to GoMining’s GoBTC Pay, the company’s open-source instant Bitcoin payments protocol. By including GoBTC Pay transactions in the template it created, GoMining showed a practical use case for Job Declaration: miners can now inject their own services or payment flows directly into the block creation process.
“This block demonstrates that miners can now participate in pooled mining while retaining control over block construction,” said Mark Zalan, CEO of GoMining. “For years, mining pools have largely determined which transactions are included in Bitcoin blocks. By creating our own block template and including GoBTC Pay transactions, we’re demonstrating one of the practical capabilities that Stratum V2 makes possible.”
Stratum V2 is an open-source mining protocol developed with contributions from across the Bitcoin industry. Beyond enabling miner-declared block templates, the protocol also targets improvements in security and efficiency. The successful use of Job Declaration in a live mining environment suggests broader adoption of Stratum V2 could give miners greater autonomy and flexibility without forcing them out of pooled operations.
“A miner just mined the first Stratum V2 block to power their own product end to end. GoMining declared the template and included their GoBTC Pay payments with no pool in the way. We built DMND for exactly this,” said Alejandro De La Torre, CEO & Co-founder of DMND.
As the mining industry continues to explore ways to boost efficiency, security and decentralization, this milestone from GoMining and DMND provides an early glimpse of how Stratum V2’s miner-driven architecture could reshape block creation and transaction selection across the Bitcoin ecosystem.
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