What is Kusama coretime?

Coretime is access to Kusama computation and blockspace. Projects can use bulk coretime for predictable access or on-demand coretime when they need it.

What does an available core mean?

An available core is offered for the next coretime period and has not yet been purchased or renewed. It is different from an idle core in the current period.

Can several parachains share one core?

Yes. Coretime can be partitioned or interlaced so that more than one assignment uses different parts of the same core.

Network resource explorer

Polkadot & Kusama
Coretime Explorer

See which cores are active, which parachains use them, what is available in the next sale, and when the current cycle changes.

Kusama network

Cycle #31 overview

Sale data is fresh Price observed Aug 16, 21:51 UTC

Core map is fresh Assignments updated Aug 16, 21:51 UTC

Coretime block 5,796,942

Current sales cycle #31

Selling access for the period beginning Sep 22, 2026.

Current phase Price discovery

The price is decreasing until it reaches the fixed-price floor.

Calculating time remaining…

Available next period 98 cores

34 of 132 offered cores have been sold or renewed.

Current purchase price 26.154 KSM

Decreasing toward the 1 KSM fixed-price floor.

Where we are now

Sales cycle timeline

Sale dates and the following usage period are different stages of the same cycle.

Complete Interlude Renewals have priority Jul 28 – Aug 11
5,654,788 → 5,755,588
Now Price discovery Price decreases over time Aug 11 – Aug 25
5,755,588 → 5,856,388
Next Fixed price Public sale at the floor price Aug 25 – Sep 22
5,856,388 → 6,057,988
Next Coretime begins Assignments move into the new period Sep 22
6,057,988

Current usage period

Core assignment map

140 core positions · 17 active ParaIDs

System / reserved Renewed Bulk Lease Shared Idle now

Next usage period

Renewal radar

Upcoming totals come from the current sale snapshot. Project rows describe access active now.

Renewed for next period 34

Core assignments secured through renewal.

New bulk purchases 0

Sold in this cycle outside renewals.

Still available 98

Offered capacity not yet sold.

Projects on renewed access now 12

Unique ParaIDs, not the number of cores.

Search by project, ParaID or core

Parachain coretime directory

17 projects shown

Project	ParaID	Core now	Access type	Current coverage	Technical period
Acurast Kusama Parachain	`2239`	1 core #25	Renewed bulk coretime	Active until Sep 22, 2026 End of the current usage period	Core #25 `431928 → 436968` Relay block 34,957,440
Amplitude Parachain	`2124`	1 core #42	Renewed bulk coretime	Active until Sep 22, 2026 End of the current usage period	Core #42 `431928 → 436968` Relay block 34,957,440
Asset Hub System / reserved	`1000`	3 cores #0, #6, #7	System / reserved	Active until Sep 22, 2026 End of the current usage period	Core #0 `431928 → 436968` Relay block 34,957,440 Core #6 `431928 → 436968` Relay block 34,957,440 Core #7 `431928 → 436968` Relay block 34,957,440
Basilisk Parachain	`2090`	3 cores #11, #27, #28	Renewed bulk coretime	Active until Sep 22, 2026 End of the current usage period	Core #11 `431928 → 436968` Relay block 34,957,440 Core #27 `431928 → 436968` Relay block 34,957,440 Core #28 `431928 → 436968` Relay block 34,957,440
Bifrost Kusama Parachain	`2001`	1 core #8	Renewed bulk coretime	Active until Sep 22, 2026 End of the current usage period	Core #8 `431928 → 436968` Relay block 34,957,440
Bridge Hub System / reserved	`1002`	2 cores #2, #46	System / reserved	Active until Sep 22, 2026 End of the current usage period	Core #2 `431928 → 436968` Relay block 34,957,440 Core #46 `432195 → 436968` Relay block 34,957,440
Coretime System / reserved	`1005`	1 core #3	System / reserved	Active until Sep 22, 2026 End of the current usage period	Core #3 `431928 → 436968` Relay block 34,957,440
Curio Parachain	`3339`	1 core #26	Renewed bulk coretime	Active until Sep 22, 2026 End of the current usage period	Core #26 `431928 → 436968` Relay block 34,957,440
Encointer System / reserved	`1001`	1 core #1	System / reserved	Active until Sep 22, 2026 End of the current usage period	Core #1 `431928 → 436968` Relay block 34,957,440
Karura Parachain	`2000`	1 core #9	Renewed bulk coretime	Active until Sep 22, 2026 End of the current usage period	Core #9 `431928 → 436968` Relay block 34,957,440
Kreivo Network Parachain	`2281`	12 cores #29, #30, #31, #32, #33, #34, #35, #36, #37, #38, #39, #40	Renewed bulk coretime	Active until Sep 22, 2026 End of the current usage period	Core #29 `431928 → 436968` Relay block 34,957,440 Core #30 `431928 → 436968` Relay block 34,957,440 Core #31 `431928 → 436968` Relay block 34,957,440 Core #32 `431928 → 436968` Relay block 34,957,440 Core #33 `431928 → 436968` Relay block 34,957,440 Core #34 `431928 → 436968` Relay block 34,957,440 Core #35 `431928 → 436968` Relay block 34,957,440 Core #36 `431928 → 436968` Relay block 34,957,440 Core #37 `431928 → 436968` Relay block 34,957,440 Core #38 `431928 → 436968` Relay block 34,957,440 Core #39 `431928 → 436968` Relay block 34,957,440 Core #40 `431928 → 436968` Relay block 34,957,440
Moonriver Parachain	`2023`	1 core #12	Renewed bulk coretime	Active until Sep 22, 2026 End of the current usage period	Core #12 `431928 → 436968` Relay block 34,957,440
People System / reserved	`1004`	1 core #5	System / reserved	Active until Sep 22, 2026 End of the current usage period	Core #5 `431928 → 436968` Relay block 34,957,440
Quartz Parachain	`2095`	1 core #41	Renewed bulk coretime	Active until Sep 22, 2026 End of the current usage period	Core #41 `431928 → 436968` Relay block 34,957,440
Robonomics Parachain	`2048`	1 core #43	Renewed bulk coretime	Active until Sep 22, 2026 End of the current usage period	Core #43 `431928 → 436968` Relay block 34,957,440
Shiden Network Parachain	`2007`	1 core #10	Renewed bulk coretime	Active until Sep 22, 2026 End of the current usage period	Core #10 `431928 → 436968` Relay block 34,957,440
YAP — Kusama Canary Test parachain	`3392`	12 cores #13, #14, #15, #16, #17, #18, #19, #20, #21, #22, #23, #24	Renewed bulk coretime	Active until Sep 22, 2026 End of the current usage period	Core #13 `431928 → 436968` Relay block 34,957,440 Core #14 `431928 → 436968` Relay block 34,957,440 Core #15 `431928 → 436968` Relay block 34,957,440 Core #16 `431928 → 436968` Relay block 34,957,440 Core #17 `431928 → 436968` Relay block 34,957,440 Core #18 `431928 → 436968` Relay block 34,957,440 Core #19 `431928 → 436968` Relay block 34,957,440 Core #20 `431928 → 436968` Relay block 34,957,440 Core #21 `431928 → 436968` Relay block 34,957,440 Core #22 `431928 → 436968` Relay block 34,957,440 Core #23 `431928 → 436968` Relay block 34,957,440 Core #24 `431928 → 436968` Relay block 34,957,440