The tax
0 to 3.3% on every transfer, the dev's choice. StonkFun offers 1% or 3%.
Launchpad on Raydium LaunchLab · Solana
The dev sets the tax, what it buys and who gets paid. The platform takes 0% on the curve. Every payout epoch is published.
Three platform accounts live on mainnet. First live payout on 2026-09-25 · see the proof
How it works
Of the 21 platforms Raydium lists, only StonkFun pays a transfer tax to holders, with one fixed rule. COOP is the second launchpad on LaunchLab whose tokens pay holders, and the first where the dev chooses the rule.
0 to 3.3% on every transfer, the dev's choice. StonkFun offers 1% or 3%.
The quote asset, any Jupiter-routable asset such as gold or staked SOL, or the token itself. Or burn it. Or send it to the treasury.
Five vetted rules:
Rules that reward wallet splitting or wash trading are refused. Splitting a wallet never raises its payout.
Every epoch. Payouts too small to deliver are carried forward and paid when they add up. Nothing is rounded away or kept.
Verified claims
Everything on this page comes from a list of claims verified on-chain or against Raydium's docs and API. These are the five strongest, with where to look.
StonkFun charges 1%, pump.fun 0.95%, letsbonk 1.25%. On COOP the platform's curve fee is zero, readable in the platform account.
Proof: the COOP platform account (feeRate 0), and the 0.25 and 0 accounts.
0.75% all-in with the 0.5% creator fee, 0.50% with 0.25%, 0.25% with 0. Only Raydium's own 0.25% remains. Incumbents: 1.25% (StonkFun, pump.fun), 1.5% (letsbonk).
Proof: the DVTEST dev buy shows the split on-chain, 0.05 SOL in, 0.049625 to the curve (0.25 Raydium + 0.5 creator + 0 platform). DVTEST on Solscan.
The 0.5% creator curve fee, the program's cap, accrues to the dev's own on-chain vault and only they can claim it. After graduation, 1.00% per swap on the pool with 0.42 forwarded to the dev, published per token. StonkFun sets the creator fee to 0 and forwards off-chain; its reward-mode creators get nothing.
Proof: the creator fee rate in the platform account; per-token dev forwards in the ledger.
Pro-rata, holding-time weighted, never-sold bonus, balance-weighted lottery, threshold. Rules that reward wallet splitting or wash trading are refused. Unit-tested invariant: splitting a wallet never raises its payout.
Proof: the rules documentation, with the invariant tests.
Snapshot, rule output, allocations and transaction signatures go into a ledger. Claim-mode roots let holders verify their own line.
Proof: the first live payout epoch, 2026-09-25, four signatures below.
Also true, and also on-chain: liquidity is permanent by construction (LaunchLab locks or burns 100% of the graduated LP; on COOP, half locked and half burned) and the mint authority is revoked at creation.
The COOP token
Reward mode, quoted in STONK, with a 3% tax. Every COOP trade buys STONK for COOP holders.
Proof
The test token DVTEST ran the whole loop on 2026-09-25: tax swept, converted, a holder paid, the treasury paid, everything signed.
2026-09-25 · DVTEST · mint 8B8SzdB6DQZkmKUgKtceMatax6Nw7vYexzuUv6ZYoSRX
Renamed on-chain to COOP on 2026-09-25. The platform fee on the curve is 0 on all three; they differ in the creator fee.
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