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GoMining says it mined a Bitcoin block using Stratum V2's Job Declaration feature, working with DMND mining pool. Under the protocol, the miner, not the pool, constructed the block template and prioritised GoBTC Pay transactions.
The company framed the block as a demonstration of miner-controlled block construction and a step toward broader Stratum V2 adoption across the network.
Why it matters
Job Declaration is one of two Stratum V2 upgrades that flip the existing power dynamic: today, mining pools assemble block templates and miners simply hash whatever the pool hands them. With Job Declaration, the miner picks its own template, ordering transactions and choosing which to include before submitting the work back to the pool. The result is decentralised block construction, which proponents argue improves censorship resistance and lets miners monetise transaction ordering themselves.
Market impact
A single block is a proof-of-concept rather than a network-wide shift, but it is the kind of operational milestone that other large mining operations watch before committing engineering resources. If DMND and GoMining are followed by Foundry, AntPool, F2Pool and ViaBTC, Stratum V2's adoption curve moves from years-long slog to network-level inflection. GoBTC Pay gets first-mover positioning as the named commercial beneficiary, a marketing anchor for any miner pitching Job Declaration to payment-processing partners.
Source: [We mined a Bitcoin block that chose its own transactions — and it points straight at GoBTC Pay — GoMining](https://gomining.com/blog/first-block)
Frequently asked questions
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What is Stratum V2 Job Declaration?
It is a Stratum V2 feature that lets the miner, rather than the pool, construct the block template, choose transaction ordering, and select which transactions to include before submitting work back to the pool.
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How does Job Declaration differ from current Bitcoin mining?
Today, mining pools assemble block templates and miners simply hash whatever the pool hands them. Job Declaration flips that so miners build the template themselves, which proponents argue improves censorship resistance.
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Who is GoBTC Pay and why is it mentioned?
GoBTC Pay is a Bitcoin payments service from GoMining. In the demonstration block, GoMining prioritised GoBTC Pay transactions, making it the first named commercial beneficiary of miner-controlled block construction.
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What is DMND mining pool's role in the demonstration?
DMND is the mining pool that partnered with GoMining on the demonstration. The block was mined using DMND's pool infrastructure, with Job Declaration enabling GoMining to construct the template.
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Does one block mean Stratum V2 is now widely adopted?
No. A single demonstration block is a proof-of-concept, not a network-wide shift. Broader adoption depends on whether major pools such as Foundry, AntPool, F2Pool and ViaBTC follow DMND's lead.
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