All metrics › Throughput & Block Production
Leader Slots
Latest value: 403,467 on 3 November 2026.
30-day average: 389,370, up 79.3% from a year earlier (217,169).
Highest daily value since January 2025: 407,855 on 23 October 2026.
The default network series of the Explorer (leader_slots). Download the data (CSV)
Total leader slots assigned to a validator (blocks produced + skipped slots). Validators are assigned as slot leaders for sets of 4 consecutive slots, proportional to their stake. During each slot, the leader is responsible for bundling transactions into a block.
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- Area
- Throughput & Block Production
- Frequency
- Daily
- Unit
- Count
- Split by
- Network, Client, Scheduler, Validator
- Source
- Firedancer
Monthly averages
| Month | Leader Slots |
|---|---|
| November 2026 (to 3 November) | 403,329 |
| October 2026 | 379,446 |
| September 2026 | 294,580 |
| August 2026 | 220,230 |
| July 2026 | 208,838 |
| June 2026 | 216,735 |
| May 2026 | 216,672 |
| April 2026 | 218,871 |
| March 2026 | 219,640 |
| February 2026 | 219,743 |
| January 2026 | 217,541 |
| December 2025 | 221,008 |
What it shows
Blocks produced is the count of blocks a validator (or group) successfully produced and had accepted by the network on a given day. Leader slots is the total count of slots assigned to a validator as leader, both successful and skipped. Together they establish the denominator and numerator of block production efficiency. The daily slot count follows the target slot time: about 216,000 at 400 ms and 432,000 at 200 ms (SIMD-0525, from October 2026).
How it is computed
Firedancer’s raw blocks count is assigned leader slots. The mart stores that count as leader_slots and derives blocks_produced (and curated blocks) by subtracting skipped slots. The daily slot count is 86,400 seconds divided by the average slot time: about 216,000 at 400 milliseconds per slot, and more when slots are faster.
Aggregation: Sum of block counts and leader-slot counts across the group. Both measures are fully additive.
Things to know
- Leader slots are proportional to stake: validators receive 4-slot leader windows, and their share of total leader assignments tracks their stake weight over the epoch.
- Rows with assigned leader slots are included even when every assigned slot was skipped; unattributed client labels roll up as Unknown.
- Blocks produced and leader slots are the numerator and denominator of block-production efficiency, and the basis for skip rate.
Full method and formula in the Methodology