According to Adam Back, pools using sv2/datum run a trust-the-pool model. Source: Adam Back, X, Sep 5, 2025. He adds that a pool could reject pool shares with JPEGs or any other content it chooses to block, meaning attempts to bypass pool preferences cut both ways. Source: Adam Back, X, Sep 5, 2025. For traders, pool-level filtering in Stratum V2 can influence which transactions are ultimately included in blocks and the resulting Bitcoin fee mix during content-heavy periods. Source: Stratum V2 Project documentation; Glassnode Analytics.

According to @adam3us, Bitcoin mining pools that do not filter JPEG-related transactions could be unprofitable even in the short term compared with filtering, underscoring immediate incentives for content filtering in block templates; source: X post by @adam3us on 2025-09-05 https://twitter.com/adam3us/status/1963847304361742407. He highlights centralization risks, noting there are few pools and that solo miners and small pools may not be in key lists, which concentrates decision-making over transaction selection; source: X post by @adam3us on 2025-09-05 https://twitter.com/adam3us/status/1963847304361742407. He adds that with Stratum v2 and datum configurations, larger setups can scale without miners themselves choosing blocks, shifting practical control over block composition; source: X post by @adam3us on 2025-09-05 https://twitter.com/adam3us/status/1963847304361742407. For BTC traders, these points directly concern transaction selection and miner incentives that shape block templates and fee flows, so monitoring mining-pool filtering policies and Stratum v2 rollout is pertinent; source: X post by @adam3us on 2025-09-05 https://twitter.com/adam3us/status/1963847304361742407.