Here, first spend is the height and date when a transaction included by the pool first spend an Pay-To-Anchor (P2A) output while first creation shows the height and date when a transaction included by the pool first created a P2A output. The table is sorted by first spend.

Since P2A spending is only standard starting with Bitcoin Core v28.0, this data can be used to get an overview of which pools have upgraded to v28.0 or newer. However, since pools like Ocean allow pool participants to supply their own block templates, it doesn’t mean that the pool will consistently mine P2A spending transactions. Additionally, a pool might run a mix of old and new node software, which causes it to sometimes mine P2A spending transactions and sometimes not.

Related Charts

First Ephemeral Dust by Pool

Shows when a pool first mined a transaction spending ephemeral dust.