Stage 1 · Monitor
Slot heartbeat, traffic, fees and epoch readouts.
Live from Solana mainnet
Is Solana healthy right now? Check its pulse.
One screen that shows how fast the network is making blocks, how busy it is and what a transaction costs at this moment. Free, and nothing to sign.
Each beat on the trace is one block (a slot), paced by the measured slot time and re-synced with the chain every 12 seconds.
CA
LEAD I · SLOTS
Connecting…
Slot–slot time –
Tx per second–last minute
Tip price p75–µ-lamports / unit
Epoch––
Ring: validators seen making recent blocks. Leader schedule is not shown; see the FAQ.
01
Open the page. No account, no download, no wallet needed.
02
It reads Solana directly. Blocks, traffic and fees, every few seconds.
03
You see plain verdicts. Healthy, busy or slow, and what it costs now.
Reading is free. Nothing is moved or charged, and connecting a wallet only shares your public address.
How it works
What happens inside one heartbeat
- A leader takes its turn. For each slot one validator, the leader, is allowed to make the block.
- Transactions are packed. The leader fills the block, highest priority price first.
- The block spreads. It is cut into pieces and passed to thousands of other validators.
- Votes confirm it. Once enough stake agrees, the block is confirmed, then finalized for good.
Vital signs
What this does: gives a one-line health check of Solana and keeps a chart of it from the moment you opened this page.
Slot time–milliseconds per slot, last 5 min
Throughput–transactions per second
Block height–blocks actually produced
Lifetime transactions–since the network began
Readings refresh every 12 to 60 seconds while this tab is open.
Traffic over the last hour
What this does: charts how many transactions Solana handled each minute for the past hour, so you can see if right now is unusual.
What it costs to get in
What this does: shows the extra tip (priority fee) people are paying right now and turns it into the cost of your own transaction.
Lowest tip that got in, per slot
What people actually paid in one block
Reads a real recent block and lists the tip every transaction in it paid. This is a heavier read, so it runs only when you ask.
Cost of my transaction
Look up any block
What this does: type a slot number and see when that block was made, how many transactions it held and which validator made it. Or pick a date to estimate its slot.
Date to slot model
Estimates the slot for a date using the slot speed measured in the last hour. Older dates drift, because slot speed has changed over the years.
Who just made blocks
What this does: lists validators seen producing recent blocks, with their share of all staked SOL, plus the software versions the network runs.
Recent block makers
- Waiting for the first block sample…
Found by reading each sampled block's fee reward, which goes to the validator that made it.
Epoch clock
An epoch is a fixed run of 432,000 slots. The end time is a model from the current slot speed.
Software versions
Counts the nodes the network currently knows about by the version they report. This is a large read, so it runs on request.
Did I overpay?
What this does: reads a wallet's last few transactions and compares the fees it paid with what the network charges right now. Connect to use your own.
How the readings reach you
Terms on this monitor
- Slot
- A turn of under half a second in which one validator may add a block. Missed turns produce no block.
- Leader
- The validator whose turn it is. Leaders rotate on a schedule set each epoch.
- TPS
- Transactions per second, counted from minute-long samples the network publishes.
- Vote transaction
- A message validators send to agree on blocks. Some samples count them, some do not.
- Lamport
- One billionth of a SOL. A micro-lamport is a millionth of that, used for tip prices.
- Finalized
- A block that enough stake has locked in. It will not be rolled back.
Treatment plan
Stage 2 · Tools
Block lookup, date estimate, real-block fee sample, fee calculator, wallet fee check.
Stage 3 · Alerts in page
Optional sound or tab-title cue when slot time or fees cross a level you set.
Stage 4 · Longer memory
Keep your own readings across visits in this browser for day-long charts.
Stage 5 · Embeds
A small pulse badge other pages can show.
The coin's chart
planned No coin is published yet. This is the structure it will launch with.
- 0 coins, fixed forever
- No presale and no private round
- Mint and freeze rights switched off at launch
- Liquidity locked or burned at graduation
- On-chain supply
- …
- Price
- …
- Market cap
- …
- Holders
- …
No returns are promised or implied.
Asked at the nurses' station
What is this, in one sentence?
A live health monitor for Solana that shows block speed, traffic and fees in plain words.
Is it safe? Does it touch my money?
Yes, it is safe to use: it only reads public network data. A connected wallet shares just its address so the fee check can fill in; the page never asks for a signature and cannot move funds.
Is the heartbeat really one beat per block?
One beat per slot. The slot number comes from the chain every 12 seconds and the beats in between are paced by the slot time measured over the last few minutes, so the count stays honest without hammering the network.
Why no leader schedule?
The read-only relay this page uses does not allow the leader-schedule call. Instead we show validators that actually made recent blocks, found from each block's fee reward.
Why is the network-wide tip often zero?
That chart shows the lowest tip that still got into each slot. Many slots have room for zero-tip transactions. Pick a busy scope or sample a real block to see what competitive traders pay.
Why might "excluding votes" match the total?
The samples come from the node we read. When it reports vote and non-vote counts as equal, we show that as reported rather than guessing.