Introduction

The Arachnarium is a live colony of social spiders in one shared web. Every buy of $ARACH is an insect flying into the silk. The colony feels it, swarms it and carries it home together.

What you are looking at

CAM 01 films experiment AR-01 under infrared: a sheet of silk slung under a rainforest branch, about two thousand strands and eleven hundred knots. The big spider at the top is the matriarch, M-001. Beside her sit the larder and the nursery. Around three hundred spiders live on the sheet: hunters, spinners, nurses, juveniles and a few males.

Why spiders

Almost every spider lives alone. About two dozen species share one web, hunt together and raise each other's young. The web is the colony's ear: every strand carries the news of where the food is. That is the whole idea of the coin. One web for everyone, and every buy feeds it.

Quick start

1. Open the web. The colony is already alive when the loading screen fades.
2. Wait for an insect. A yellow ring marks it, the strands around it shake orange, and hunters start running.
3. Click a spider. Its dossier opens on the right and the camera follows it.
4. Press V. Vibration mode dims the silk and shows only the shaking.
5. Open the dossier. The console throws insects into your copy of the web.

The same rules in code

import { insectFor } from "https://coli-six.vercel.app/lib/arachnarium.js";

const bug = insectFor(1.5);
bug.kind;      // "moth"
bug.hunters;   // 7
bug.food;      // 38 units for the larder

<script type="module">
  import { insectFor } from "https://coli-six.vercel.app/lib/arachnarium.js";
  const bug = insectFor(12);
  document.body.textContent = bug.kind + " · " + bug.hunters + " hunters";
</script>

curl -O https://coli-six.vercel.app/lib/arachnarium.js

The module has no dependencies. See arachnarium.js for every export.

Glossary

How it works

One loop, from the market to the next generation of spiders.

1. A buy lands. Its size in SOL picks the insect. It hits a knot away from the retreat.
2. The web shakes. A ring of vibration runs out along the silk, then the struggling insect keeps the strands trembling.
3. The matriarch orders. The nearest free hunters by path length are sent, as many as the insect needs.
4. They bite. Once at least half the team is on it and the bites add up, the insect is lifted.
5. They carry. The team drags it whole along the shortest path to the larder. A full team walks faster.
6. The colony eats. Every spider eats a little each second from the oldest catch.
7. Nurses make sacs. Each 26 units eaten become an egg sac, which hatches 8 to 14 spiderlings.
8. Spinners build. When the sheet gets crowded, or every 14 seconds or so, spinners push new strands out at the edge.

The loop

buy (SOL) ─▶ insect ─▶ vibration ─▶ order ─▶ hunters rush
                                              │
   new strands ◀─ spinners ◀─ crowding ◀─ spiderlings ◀─ egg sacs ◀─ larder ◀─ carry

The web

The web is a graph. Knots are nodes, strands are edges with their length in millimetres.

Shape

The sheet is grown once from a fixed seed, so it has the same shape for everyone: about 1,250 knots spread at least 42 mm apart inside an ellipse 2.5 m wide, a denser tangle around the retreat, each knot tied to up to four neighbours closer than 112 mm, a few long threads, and anchor lines up to the branch and out to the side stems.

Numbers

Paths

Spiders never wander off the silk. Every trip is a walk down a shortest-path field computed with Dijkstra from the goal: the insect, the larder, the nursery or the retreat. At each knot a spider steps to the neighbour that is closest to the goal.

import { shortestPaths, nextStep } from "https://coli-six.vercel.app/lib/arachnarium.js";

const web = { nodes: [[0,0],[100,0],[100,100],[300,0]], edges: [[0,1],[1,2],[1,3]] };
const toInsect = shortestPaths(web, 3);   // [300, 200, 300, 0]
nextStep(web, toInsect, 0);               // 1

Prey and hunters

The size of the buy picks the insect, and the insect picks the size of the team.

Formulas

hunters = max(base, min(30, round(base + √sol × 1.5)))
food    = round(baseFood + sol × 12)
bite    = hunters × 2.2   // seconds of biting before it can be lifted

The team lifts the insect once at least half of it has arrived and the bites add up. Every hunter on the insect bites a little faster than the last one, so a full team is quicker than half a team. Gnats and flies are carried at 55 mm/s. Bigger insects go at 10 to 38 mm/s, depending on how full the team is.

Vibration

Each knot carries a number from zero to about 1.7: how hard it shakes right now. It drives the orange strands and the Vibration meter.

The model

A     = min(1.2, 0.25 + √length / 7)
shake = A × e^(−d / 620) × (0.5 + 0.5 × sin(14t − 0.028d))     // while it struggles
ring  = A × 1.4 × e^(−1.2 × age) × (1 − |2400 × age − d| / 160) // the first 2.5 s

d is the path length along the silk in millimetres, not the straight distance. The impact ring travels at 2.4 m/s. Knots further than 2.4 m along the silk stay still.

Larder and brood

Roles

Market events

Before launch

Until the contract is set the market is simulated: a buy every 4–13 s, a swarm every 150–260 s, a burn every 200–320 s. The link in the top bar says SIMULATED.

The log

Live link

Once the contract address is set on the home page, the web reads the market from DexScreener every 20 seconds.

1. Find the pool. All Solana pairs for the mint, the one with the most liquidity wins.
2. Take a snapshot. 24-hour buys, sells, volume, SOL price and market cap.
3. Compare. New buys since the last snapshot become insects, up to 30 per poll.
4. Size them. New volume divided by new trades and the SOL price is the average buy. The site varies each insect by up to 60% around it.
5. Spread them. They fly in over the next 18 seconds.

import { watch } from "https://coli-six.vercel.app/lib/arachnarium.js";

const stop = watch("YOUR_MINT_ADDRESS", bug => {
  console.log(bug.kind, bug.sol, "SOL,", bug.hunters, "hunters");
});
// stop() when you are done

curl https://api.dexscreener.com/latest/dex/tokens/YOUR_MINT_ADDRESS

Controls

Specimen dossier

Panel 07 shows the tagged spider: ID, role, sex and size, its current task in plain words, when it hatched, where it is, how far it has walked, how many hunts it joined and how many catches it brought home, how much silk it spun, and its last four events.

The quick buttons tag a random hunter (a busy one if there is one), spinner, nurse or juvenile, or the matriarch.

Console

The console sits in the dossier. It acts on your copy of the colony only.

arachnarium.js

An ES module with the colony's rules. Import it straight from the site.

import * as Arach from "https://coli-six.vercel.app/lib/arachnarium.js";

curl -O https://coli-six.vercel.app/lib/arachnarium.js

Exports

Errors

Formats

Insect

{
  "sol": 1.5,
  "kind": "moth",
  "lengthMm": 22,
  "food": 38,
  "hunters": 7,
  "biteSeconds": 15.4,
  "golden": false
}

Snapshot

{
  "pair": "…", "dex": "pumpswap", "url": "https://dexscreener.com/solana/…",
  "buys24h": 9163, "sells24h": 9842, "volume24hUsd": 612000,
  "solUsd": 101.2, "marketCapUsd": 265000000, "at": 1792838416757
}

Graph

{ "nodes": [[x, y], …], "edges": [[a, b], …] }   // millimetres, edges by node index

Try it

These blocks import ../lib/arachnarium.js and run it right here.

A buy

Loading

A real coin

Press the button to ask DexScreener.

Limits

• Your copy of the colony. The web has the same shape for everyone, but the spiders live in your browser. Two people do not see the same spider in the same place.
• Estimated buys. The live link works from DexScreener's 24-hour totals, polled every 20 s.
• Not a field study. The numbers follow social spiders loosely. The table in the dossier says what is real, what is a metaphor and what is fiction.
• Nothing leaves the page except the DexScreener request once a contract is set.

$ARACH

The coin of The Arachnarium. Every buy is food for the web.

FAQ

Do real spiders have a matriarch?

No. Social spiders have no queen. M-001 is the oldest female, and here she gives the orders.

Why is my buy a gnat?

Anything under 0.15 SOL is a gnat. One hunter is enough for it.

Can the colony die out?

No. It only shrinks when a group buds off, and it keeps eating as long as anything is in the larder.

Why does the web look the same after a reload?

The sheet is grown from a fixed seed. Everything that moves on it is new each time.

Where do the contract and X links come from?

From the settings on the home page. The docs read them from there, so they are never filled in twice.

Changelog