Custom-Template Hashrate Share
Share of network hash power from pools whose blocks diverge from the expected mempool template - a proxy for miner-built, decentralized block-template construction (DATUM / Stratum V2).
What is it?
Share of network hash power from pools whose blocks diverge from the template expected from the public mempool (a lower match rate). When a miner builds its own template (DATUM or Stratum V2 Job Declaration protocols), it selects and orders transactions differently from the pool's standard template, lowering its blocks' match rate. Aggregating the hash power of such pools yields an indicator of decentralized template-construction adoption.
How to read
A rising share reflects growing adoption of miner-side template construction. Read it as a trend rather than an instantaneous level. The metric accumulates its points over time: its depth grows day by day.
Key zones
There is no normative threshold for this share; its dynamic carries the information. A sustainably rising share indicates template decentralisation is gaining ground; a stable share reflects a status quo dominated by standard pool templates.
What to observe
Watch for sustained increases, which accompany the shift toward decentralized block construction. Set it against the OCEAN pool share and the Nakamoto coefficient to link decentralized-template adoption to the overall health of mining decentralisation.
Historical context
Miner-side template construction is a recent phenomenon: the DATUM protocol mined its first block on 30 September 2024, and Stratum V2 saw broad industry adoption from 2025-2026. The metric tracks this movement as it unfolds; its history grows progressively.
Expert notes
The share relies on a match-rate threshold to separate "custom" templates from standard ones; this threshold is indicative and adjustable. The metric does not distinguish DATUM from Stratum V2, and measures the hash power involved, not the number of miners. A lowered match rate can also reflect out-of-band transactions, to be cross-referenced with fee divergence.
Common mistakes to avoid
A small share does not mean template decentralisation is a non-issue: the stake is qualitative (who decides block content). Moreover, a lower match rate is not in itself a flaw - it is precisely the mark of a miner exercising its own transaction choice.
Programmatic access
REST API
curl -sS \
'https://api.trinityinsights.io/api/v1/onchain/custom-template-hashrate-share/history?days=90' \
-H 'X-API-Key: $TRINITY_API_KEY'MCP server
{
"tool": "get_chart_value",
"metric_id": "custom-template-hashrate-share",
"timeframe": "1y"
}Required tier: pro. See the pricing grid for the tier list and the MCP documentation for multi-client configuration.
Related metrics
Institutional disclaimer
Trinity Insights is an educational and analytical tool. The metric above does not constitute investment advice. Trinity Insights is not a Crypto-Asset Service Provider (CASP) registered under MiCA Regulation (EU) 2023/1114. See the full disclaimer.