sparcStart here
Sparc is a memecoin launchpad on Arc. Create a token, launch from your wallet and trade against USDC. Confirmed launches appear in Explore automatically.
Connect your wallet
Connect an Ethereum-compatible wallet, then sign the Sparc sign-in message to manage your launches and drafts. Signing in costs no gas and grants no permission to spend tokens. Transactions and token approvals are separate wallet requests.
Try the testnet
This beta runs on Arc Testnet (chain ID 5042002). Get test USDC from the Circle faucet, connect your wallet and use the network requested by Sparc. Test USDC is for testing. Never send mainnet funds to fund a testnet transaction.
Get test USDC ↗Launch a token
Open Create token. Add a name, ticker, image and optional description or social links. Save a private draft or launch immediately. Your wallet signs the creation transaction and a message proving ownership. Once the receipt is verified, the token appears in Explore. An optional opening buy is a separate transaction after launch; it uses 1% slippage protection. If it fails, your token remains live.
Buy, sell and graduate
Before graduation, the contract uses a bonding curve: purchases move the price up and sales move it down. Your quote shows the estimated output and fee. Slippage limits how much the final execution may differ. The current deployment graduates at 5,000 USDC of curve reserves into locked Uniswap v4 liquidity. Graduation does not guarantee demand or a token price.
Creator fee routing
The new contract release keeps the total trading fee at 1%: 0.70% of volume is creator-directed, 0.24% funds the SPARC buyback vault, and 0.06% supports team operations. At launch, a creator freezes how their 0.70% is divided among their wallet, eligible token holders, and that token’s buyback vault. Existing tokens remain on their original contracts.
Holder rewards
When a creator selects holder rewards, funded epochs can be snapshotted once per day. A wallet needs at least 20 USDC of pool-implied token value at that snapshot. System accounts are excluded and one wallet’s reward weight is capped at 5% of supply. Eligible rewards appear and can be claimed only from the Rewards page.
Scheduled buybacks — testnet vault deployed
The SPARC testnet vault is deployed; its funding and eligibility are shown on the Buybacks page. Automatic fee routing and keeper operation are separate setup steps. The vault checks eligibility no more than once per minute and uses a 15–30 minute average price. After a 7% cumulative drop from its reference price, it can spend up to 17% of its remaining USDC reserve, including trading fees. A successful purchase sets the new reference price. Rising prices do not raise that reference. Each vault also has fixed per-purchase and 24-hour spending caps, a reserve floor, a 30-minute cooldown, and a 1% maximum adverse execution deviation from the average price. Drops beyond 30% of the reference halt purchases. These controls may skip a buyback; they do not guarantee price support.
View buyback status →Where buyback funds come from
There is no extra buyback tax. SPARC buybacks use only the fixed 0.24%-of-volume protocol allocation. A launched token uses only the portion of its own 0.70% creator pool that its creator directs to that token’s vault. Each token vault is separate, public, and discoverable from Buybacks and the token page.
How execution and burning work
A keeper submits observation and execution transactions; the contract enforces the rules, and anyone can submit an eligible execution. If automation stops, buybacks can stop and price history may need to warm up again. Purchased tokens go to the dead address, removing them from spendable circulation without reducing the current token contract’s totalSupply figure. A guardian may pause purchases but cannot withdraw funds or change the strategy. Deposited reserves have no withdrawal path and may remain locked. The supporting market, hook, oracle and vault have been deployed for the SPARC testnet token. Funding, keeper operation and eligibility must still be checked before purchases can execute. Existing immutable launches do not gain it automatically.
Understand what you approve
Check the network, token, amount, spender and minimum received in your wallet before signing. Tokens may lose value and liquidity may be limited. Smart-contract review and deployment verification are required before a mainnet release.