Atomic Distribute

atomic-distribute — sqrt-weighted USDC payouts to holders

Distributes USDC to current holders of a pump.fun coin, with each holder's share computed as sqrt(balance) / sum(sqrt(balance)) — flattens the curve so whales don't dominate while still rewarding larger holders. Includes a MIN_BPS floor so dust holders below threshold are skipped.

Script

src/distribute.js

Setup

Run all commands from the repo root — package.json lives there and defines npm scripts (npm run launch, npm run collect, etc.).

npm install
cp .env.example .env  # fill in

The script reads all token accounts for MINT, applies the weighting, and submits batched USDC transfers from FUNDER_SECRET to each eligible holder.

Flow

Normal sqrt-weighted distribution:

MINT=<your-coin-mint> \
REWARD_PERCENT=80 \
MIN_BPS=10 \
FUNDER_SECRET=<base58-USDC-holder> \
  npm run distribute

This pays out 80% of the funder wallet's USDC balance, weighted by sqrt(holder balance), to every holder with at least 0.1% (10 bps) of the supply.

Emergency sweep (pause + drain):

MINT=<your-coin-mint> \
EMERGENCY=1 \
EMERGENCY_DESTINATION=<single-address> \
FUNDER_SECRET=<base58-USDC-holder> \
  npm run distribute

EMERGENCY=1 skips holder weighting entirely and sends all USDC from the funder wallet to one address. Use when shutting down a rewards program or recovering from a misconfiguration.

Env vars

• RPC_URL — Solana RPC.
• MINT — base58 mint address of the coin whose holders receive rewards.
• REWARD_PERCENT — percentage of the funder's USDC balance to distribute this run (0–100).
• MIN_BPS — minimum holder share (basis points of supply) to be included. 10 bps = 0.1%.
• FUNDER_SECRET — base58 secret of the USDC-funded wallet that signs and pays.
• EMERGENCY — set to 1 to override sqrt logic and sweep to one address.
• EMERGENCY_DESTINATION — destination for emergency mode.
• BATCH_SIZE — number of transfers per tx (default reasonable, lower if hitting size limits).

Holder set

The script enumerates all SPL token accounts for MINT via getProgramAccounts filtered on mint. This is read-heavy — use a paid RPC (Helius/Triton) for any coin with >100 holders or you will get rate-limited.

Holders below MIN_BPS are silently dropped. The script logs each skipped holder + reason so you can audit after.

Gotchas

• USDC ATA creation. Holders without a USDC associated token account require one; the script creates them inside the same batch tx. This costs ~0.002 SOL per new ATA, paid by FUNDER_SECRET. Make sure the funder has enough SOL on top of the USDC.
• Pause-pool listings. If the coin is delisted from pump.fun, on-chain holders are still valid. The script doesn't depend on pump.fun's curve state.
• Rate limits. Public mainnet RPC will rate-limit after a few hundred getAccountInfo / getProgramAccounts calls. Use a paid RPC for production runs.
• Dust holders. Setting MIN_BPS too low means hundreds of tiny payouts each costing more in tx fees than the payout itself. 10–50 bps is sane.
• Sybil. Sqrt weighting flattens whales but doesn't defeat Sybil — a single actor splitting across many wallets gets more than they would by holding in one wallet (n * sqrt(b) > sqrt(n*b)). Live with it, or layer on additional gating off-chain.

Security

FUNDER_SECRET here holds USDC — typically a meaningful amount. Keep this key on a host that doesn't double as the leaked/creator wallet. The distribution is on-chain public; anyone can see which holders got paid and how much.