Tier cutoffs

What each tier takes

Beam ranks qualified orchestrators by raw weight (verified uploaded MiB × penalty × fraud-report reward) and splits emissions by rank: A is the top 30 (50%), B the next 30 (35%), C the next 30 (10%), D the next 30 (4%) and E the rest (1%). Beam does not publish raw weight, so each tier is described by what its members showed: the least uploaded data in the tier is its cutoff, alongside their PRISM scores. Sell pressure then moves weight between miners, which is why a tier's actual share differs from its nominal one.

Epoch 25754· observed 2026-10-13 04:07 UTC· published 2026-10-13 05:19 UTC· one subnet epoch behind live

Tier	Raw-weight ranks	Members	Least uploaded	Median uploaded	PRISM (least · median)	Boundary orchestrator	Share (nominal)
Tier A	1–30	30	198 GB	525 GB	0.484 · 0.677	UID 87 · rank 92 · PRISM 0.608	38.1% (50%)
Tier B	31–60	30	261 GB	563 GB	0.234 · 0.439	UID 195 · rank 90 · PRISM 0.448	27.8% (35%)
Tier C	61–90	30	251 GB	422 GB	0.294 · 0.407	UID 144 · rank 119 · PRISM 0.433	9.7% (10%)
Tier D	91–120	30	326 GB	487 GB	0.266 · 0.363	UID 185 · rank 48 · PRISM 0.342	7.9% (4%)
Tier E	121+	115	0 B	217 GB	0.000 · 0.162	UID 126 · rank 230 · PRISM 0.000	17.3% (1%)

Least uploaded data per tier

The cutoff each epoch, in GB.

Median PRISM per tier

PRISM decides routing, and so how much work an orchestrator gets.

Emission share per tier

After sell pressure. Weight taken from sellers goes to holders, so lower tiers often receive far more than their nominal share.

Recent epochs · least uploaded per tier

Epoch	Tier A	Tier B	Tier C	Tier D
25754	198 GB	261 GB	251 GB	326 GB
25753	191 GB	255 GB	246 GB	323 GB