Cubit
Every price is a quotient

Whose cubit?

The royal cubit and the common cubit both measured honestly, and both gave a different number for the same wall. Neither was wrong. What was wrong was writing the number down without saying whose cubit it was.

Your position has a price on top and a choice underneath. Cubit measures it in every denominator at once — so when it is up in one and down in another, you find out here rather than later.

6 rulers · one request, one instant · nothing custodied · no transaction signed · a ruler that cannot be read is shown as absent, with the reason — never as its last price

The rulers, right now
USD
SOL
jitoSOL
SPYx
NVDAx
GLDx
reading all 6 in one request…
01The whole idea

A position flat in dollars is not flat.

Below is one position that has not moved a cent in dollars. In the fortnight it was open SOL rose a fifth and gold fell a tenth — the position did nothing, and the rulers moved underneath it.

6 honest measurements of it: 1 up, 2 down, and 3 that did not move at all. Every one is correct. Any single one, printed alone, is a claim about the world that somebody else's statement will contradict.

What it cost, and what it is worth

paid 1,000.00 · now worth 1,000.00 · the token moved +0.00%

The same position, six ways
an illustration, not live
USD1,000.00001,000.0000+0.00%
SOL9.80398.1699-16.66%
jitoSOL7.53576.2814-16.64%
SPYx1.30831.3083+0.00%
NVDAx4.48434.4843+0.00%
GLDx2.46852.7427+11.10%
up in GLDx · down in SOL, jitoSOL
Both at the same instant. Neither column is the headline here.
02The arithmetic

Nothing is converted twice.

Every figure is held once, canonically, and each column is one division away from it. Converting through an intermediate ruler — dollars to SOL to gold — floors twice, and the two floors compound.

amount = usd × 10^decimals × 1e12
         ÷ (1e6 × usdPerUnit)

direct  274273176
chained 274273175
off by  1 base units

On this one figure the difference is small. Across a page of columns read in different orders it is a position that disagrees with itself — which is the one thing this idea can get quietly wrong, so the suite sweeps thousands of triangles and requires the direct route to be exact.

1,000.00, in each ruler
USD1,000.000000
SOL8.169934
jitoSOL6.281407
SPYx1.308386
NVDAx4.484304
GLDx2.742731

USD is the canonical unit because it is the one every quote source already reports in — not because it stands still. It does not. It is one column here, never the headline.

03What it refuses

A stale cubit is a wrong cubit.

No last-known price

A ruler that cannot be read right now shows as absent. Not zero, and not the number it had an hour ago — that is wrong in the direction that makes the site look like it is working.

No single headline

There is no one figure at the top of the page. Choosing one would be choosing a denominator on the reader's behalf, quietly, which is the thing this exists to stop.

No mixed instants

All six rulers are read in one request. Six requests are six moments, and comparing measures from different moments produces numbers nobody can reproduce.