arcfly
MaleCNS v1.0165,122 neuronsoff-chain, CPU
The male fly connectome, running as leaky integrate-and-fire units on real wiring. Arc is its senses, its heartbeat and its memory.
01
A real connectome, simplified neurons, and one chain wired into its senses.
A real fruit fly's wiring — 165,122 neurons and about 10.2 million connections, traced cell by cell in the Janelia and Google MaleCNS connectome. Here it runs off-chain on a CPU, every neuron reduced to a leaky integrate-and-fire unit. Arc gives it something to feel: live mainnet activity drives named groups of sensory cells, and the map above lights up wherever the wiring carries it.
Each window the brain reads the newest Arc blocks. Chain traffic, active senders, gas, USDC and EURC flow, large transfers and USDC bridged on and off Arc each drive a named group of sensory cells. Once the token exists, its buys, sells and burns get receptors of their own. A sense fires only when its signal rises above its own recent baseline, so a quiet chain makes a quiet brain.
Every ten minutes the brain closes an epoch and computes a pulse: a hash of its full state, a Merkle root of exactly which neurons fired, and a hash of what it sensed. When heartbeats are on, that pulse is written to Arc and anyone can check it — an owner can prove a neuron fired in a given epoch. Until then it is computed off-chain only.
Burn the token, choose how many neurons, write a name and a note. The registry deals neurons from a fixed shuffled order and writes your wallet, the name and the note onto Arc. No NFT, nothing returned, nothing editable — by anyone, including us. Tap one of your neurons on the map and the name comes up.
It does not run on-chain. It is not conscious. It is not an uploaded fly. The neurons are leaky integrate-and-fire units on real wiring, simulated on a server; the chain is the input and the ledger, never the processor.
02
Eleven Arc signals, each wired to a named group of sensory cells.
| Arc signal | Sensory group it drives |
|---|---|
| chain traffic | visual relay cells L2, under the photoreceptors |
| active senders, fee-weighted | Johnston's organ, sound cells (JO-A) |
| gas | heat-sensing cells (TRN) |
| USDC flow | dorsal-glomerulus smell receptors |
| EURC flow | ventral-glomerulus smell receptors |
| large transfers | wind and gravity sensors |
| USDC bridged onto Arc | taste peg neurons |
| USDC bridged off Arc | labellar bristle neurons |
| token bought | pharyngeal sensillum cells |
| token sold | ppk23 pheromone-sensing cells |
| token burned | cVA receptors (ORN DA1) |
The pairing is ours, not biology. Which Arc signal drives which sense is a mapping we chose so the brain has something to feel. A fly has never sensed a blockchain. The cells are real, annotated subclasses of the MaleCNS connectome; the wiring between chain and cell is a display decision.
No sugar cells, no bitter cells. The connectome carries no receptor labels of that kind, so the two taste groups are named by their annotated subclass — taste peg neurons and labellar bristle neurons — and never by what anyone assumes they taste.
The three token senses stay idle until the token exists.
03
Arc is Circle's Layer-1. It went live on 16 September 2026.
Independent project. Not affiliated with, sponsored by or endorsed by Circle, Arc, or any of the institutions named above. Naming the validators is a plain description of how the chain works, not a claim of any partnership. Every number shown on this page is read from the brain server or from the registry contract at the moment you load it.
04
Burn the token to write a name into the wiring, permanently.
Neurons are dealt from a fixed shuffled order written into the contract. You choose the count, never which cells.
Up to 32 bytes for the name and 140 for an optional note, stored as raw bytes in the registry. Tap one of your neurons on the map and the name comes up; when it fires, that is your piece of the wiring lighting up.
Your wallet approves the exact amount, then the registry burns it and records the claim. Nothing is returned and nothing can be edited afterwards.
0x…dEaD. Nothing is returned.— per neuron— left
Coming soon
The token hasn't launched and the registry contract isn't deployed yet. When the token exists, its address and the price per neuron are set once in the registry and this instrument opens.
05
Names burned into the brain, newest first.
06
Whose work this is built on.