Tripwire mark Tripwire
Arm a wire
A trip arm a short distance before a red signal at dusk
Signal cabin · arc main line · {{ home.clock }} utc

Put the stop before the red.

Arm a tripwire a few percent ahead of your liquidation price on Arc perps. When price reaches it, we prepare the switch of part of your margin to a stable siding for you to sign, and we record whether it saved you or cost you.

Arm a wire Walk the cabin
{{ home.statWires }}
Wires armed this shift
{{ home.statSaved }}
Trips marked saved
{{ home.statCost }}
Trips marked cost
01 · the lever frame

{{ home.headlineDist }} before red. Drag to move it.

Set your position and drag the lever. The amber line is where the wire trips; the red line is where you get liquidated.

ETH-PERP · long 4.20 mark {{ home.markStr }}
RED 2,175.40
Amber train-stop trip arm
{{ home.tripStr }}
MARK
MAIN LINE →
PULL
Lever 4 · train-stop

Pull the lever to walk the arm toward the red. Each detent is a quarter percent.

Figure plate ETH-PERP
{{ home.tripStr }} {{ home.headlineDist }} before red
Switch
{{ home.shareStr }}
Rejoin at
{{ home.rejoinStr }}
Siding
USDC
{{ home.statusLine }} Review prepared switch →
02 · the switch

What the switch does

Part of your margin leaves the main line for the siding you chose. The plate shows the leverage you would rejoin at.

Arm passes · relay clacks · lamp turns amber
Points set · 40% of margin routed to the siding
Ground signal clear · switch prepared, yours to sign
A junction diverging onto a siding with a green ground signal lit
SIDING 2 · USDC · REJOIN 4.8×
03 · two trains

With a stop, without a stop

Same prices, same position. One train has a stop set 3% before red. See what margin each has left.

Train A · stop at 3.0%{{ home.aState }}
Margin left{{ home.aMargin }}
{{ home.aNote }}
Train B · no stop{{ home.bState }}
Margin left{{ home.bMargin }}
{{ home.bNote }}
04 · replay

Last month, replayed

Your wire run against the last 30 days of mark prices. Every trip marked, every trip graded against holding.

ETH-PERP · 30d mark · wire at 3.0% before red {{ home.replayDate }}
TRIP 2,240.70 RED 2,175.40
Trips
{{ home.replayTrips }}
Marked saved
{{ home.replaySaved }}
Marked cost
{{ home.replayCost }}
Against holding
{{ home.replayDelta }}
The amber train-stop arm reset upright beside an empty line at dawn
05 · the register

Tripped once. Set it again.

After every trip, the register marks it saved or cost. Then the arm goes back up where you want it.

Entry 214 · 21 sep 2026 · 0412 utcETH-PERP
2,240.70switched 40% · rejoin 4.8×
Saved
{{ home.stampNote }}
Open the register book →
06 · the line

Why the line needs signals now

Perps arrived on Arc days ago with Synthra V3, and edgeX runs USDC-margined perps here. Arc traders are carrying leverage for the first time.

Day 1 · first perps trains run the Arc main line.
Day 3 · positions opened faster than stops were set.
Day 5 · the cabin opens. Trip arms go up before every red.
A rack of bakelite relays and brass terminals behind the panel
Relay rack · the machinery behind a prepared switch

Put your arm up before the next red.

Takes one signature. Distances first, prices second.

Arm a wire
Tripwire · signal cabin, Arc main line AboutCabinRegister All figures illustrative. Times in UTC.
Arm · lever frame

Arm a wire

Pick a market, enter or load a position, set the train-stop distance, the share to switch and the siding, then register the wire with one signature.

01Market
Mark {{ arm.markStr }} · funding 0.0041% / 8h · venue edgeX
02Position
Side
Margin {{ arm.marginStr }} Red at {{ arm.liqStr }}
03Share to switch
{{ arm.shareStr }}
{{ arm.switchAmount }} leaves the main line · rejoin at {{ arm.rejoinStr }}
04Siding
05Register the wire

One signature arms the relay. Nothing moves until the arm is passed.

{{ arm.errText }}
{{ arm.marketName }} · {{ arm.sideName }} {{ arm.sizeVal }}{{ arm.wireState }}
RED {{ arm.liqStr }}
Amber train-stop trip arm
{{ arm.tripStr }}
MARK
Train-stop{{ arm.marketName }}
{{ arm.tripStr }}
{{ arm.distLabel }} before red
Switch {{ arm.shareStr }}Rejoin {{ arm.rejoinStr }}
{{ arm.statusLine }}
Register · entry {{ arm.entryNo }} · {{ arm.stampTime }}
Wire registered.

Arm up {{ arm.distLabel }} before red at {{ arm.tripStr }}. {{ arm.shareStr }} of margin routed to {{ arm.sidingName }} when the arm is passed. Nothing moves until then.

Armed
Clearance rule: the arm sits no closer than 1.00% before red, so the relay has room to work. All figures on this page are illustrative.
Tripwire · signal cabin, Arc main line AboutCabinRegister All figures illustrative. Times in UTC.
Cabin · shift {{ cabin.shiftNo }} · {{ cabin.clock }} utc

The cabin

Every armed wire against its live price track. The closest arm sits at the top of the board.

Closest to tripping
{{ cabin.closestName }}
Mark to arm
{{ cabin.closestGap }}
Arm to red
{{ cabin.closestClear }}
Wires armed
{{ cabin.armedCount }}
Relay 4 · {{ cabin.clock }} utc
{{ cabin.trippedName }} passed the arm at {{ cabin.trippedPrice }}.
{{ cabin.trippedShare }} of margin staged for the siding. Switch prepared. Yours to sign.
Review the prepared switch
Tripped
{{ w.name }} {{ w.pos }} · margin {{ w.margin }} · siding {{ w.siding }}
{{ w.state }}
MARK {{ w.mark }}
RED {{ w.red }}
Arm at
{{ w.trip }}
Before red
{{ w.dist }}
Mark to arm
{{ w.gap }}
Switch
{{ w.share }} → {{ w.rejoin }}
Registered
{{ w.when }}
Board refreshes on every mark print. Advancing the shift runs the closest wire down onto its arm so you can see the trip. Arm another wire →
Tripwire · signal cabin, Arc main line AboutHomeRegister All figures illustrative. Times in UTC.
Trip 214 · eth-perp · 21 sep 2026 · 0412 utc

{{ trip.headline }}

{{ trip.subline }}

Prepared switchRegister entry 214
2,210.90 3.00% before red
Margin on the line
$4,120
To the siding
$1,648
Stays on the line
$2,472
Rejoin at
4.8×
Siding
2 · USDC
Red at
2,146.51
{{ trip.stampWord }}
Signature window {{ trip.windowStr }}

{{ trip.windowNote }}

Simulate the rejoin

$1,648 is on the siding. Choose the leverage you would rejoin the main line at and read the new red.

{{ trip.rejoinLevStr }}
New red
{{ trip.newRed }}
Clearance
{{ trip.newClear }}
Size on rejoin
{{ trip.newSize }}
Set the arm again →
Switch lapsed

Nothing moved. The full $4,120 stayed on the main line and the arm is down. Mark price is 2,204.10, which is 2.68% before red. The register shows entry 214 as lapsed.

A rack of bakelite relays and brass terminals
Relay chain · trip 214
0412:07 · arm passed at 2,210.90
0412:07 · relay 4 closed, lamp amber
{{ trip.line3 }}
{{ trip.line4 }}
What signing does
$1,648 leaves the main line for siding 2 and sits in USDC.
The remaining $2,472 carries the position at 4.8× instead of 8.0×.
Red moves from 2,146.51 to 2,013.40 — 8.93% of clearance from the mark.
The register grades the trip at the end of the shift: saved or cost.
A prepared switch is an instruction, not a movement. If the window closes unsigned it is written up as lapsed and the arm resets. All figures on this page are illustrative.
Tripwire · signal cabin, Arc main line AboutCabinRegister All figures illustrative. Times in UTC.
Register book · 30 days to 21 sep 2026

The register

Every trip scored saved, cost or lapsed. Pending entries are graded at the end of the shift. Rearm from any row.

Trips
0
Saved
0
Cost
0
Lapsed
0
Against holding
$0
Entry{{ r.no }}{{ r.when }} Market{{ r.market }}{{ r.pos }} Arm at{{ r.arm }} Before red{{ r.dist }} Switched{{ r.share }}{{ r.amount }} Result{{ r.result }} Vs holding{{ r.delta }} Rearm
{{ r.result }}
Saved means the switch left you with more margin than holding. Cost means holding would have been better. Lapsed means the window closed unsigned. All figures illustrative. Arm a wire →
Tripwire · signal cabin, Arc main line AboutCabinHome All figures illustrative. Times in UTC.
A row of brass levers in a cast-iron frame with one amber lamp lit
About · the cabin and the rules

A stop is only useful before the red.

Tripwire is a signal cabin for leveraged positions on Arc perps. You set a train-stop a few percent before your liquidation price. When the mark reaches it, the relay closes, the lamp turns amber, and a switch is written up that moves part of your margin onto a quiet siding. You sign it, or you let it lapse. Either way it is written in the register.

How it works

Four movements

01
Pull the lever

Choose the market and the distance. The arm goes up a stated percent before red — never closer than 1.00%.

02
The arm waits

Nothing moves while the line is clear. The cabin board shows which wire is closest to its arm.

03
The relay clacks

Price reaches the arm. A switch is prepared for the share and siding you chose, and held open for fifteen minutes.

04
The register

Signed or lapsed, the trip is written up and graded against holding: saved, cost, or lapsed.

A short enamel-amber trip arm on a cast pivot, raised
Train-stop · trip arm, raised
The rules of the frame

Distances first, prices second

Every wire is stated as a distance before red, then as a price. Three point two percent before red, then the dollar figure.
Clearance rule: the arm never sits closer than 1.00% before red, so the relay has room to work.
A prepared switch is an instruction, not a movement. Nothing leaves the main line without your signature.
Every entry is dated and timed in UTC and graded with one word: saved, cost, or lapsed.
The siding

Where the margin goes

The siding is a quiet line off the main. Margin that leaves the position parks there in USDC at no leverage. Siding 1 holds it until you sign it back. Siding 2 rejoins the main line at the lower leverage printed on the plate.

Switch window
15:00
Clearance floor
1.00%
Register words
3
A junction diverging onto a siding with a green ground signal lit
Plainly

What this does not do

It does not stop the market

A gap straight through the arm to the red is possible. The wire prepares a switch; it cannot slow a train.

It does not trade for you

No position is opened, closed or sized by the cabin. It moves a share of margin, once, when you sign.

It does not always help

Some trips cost you: price turns after the switch. The register marks those in the same hand as the ones that saved you.

The amber trip arm reset upright beside an empty line at dawn
Five days in

The cabin opened late

Perps started running on Arc days ago with Synthra V3, and edgeX runs USDC-margined perps here. Positions were opened faster than stops were set. The frame went in on day five, one lever per open position, and the arms went up before every red.

Tripwire · signal cabin, Arc main line HomeCabinRegister All figures illustrative. Times in UTC.