Key Addresses

This page lists all deployed addresses for the Stableswapper program. Reference these when constructing transactions or integrating with the contract.

These docs currently show devnet/testnet addresses only. Do not use these addresses on mainnet. Mainnet addresses will be provided during your production onboarding.

Ethereum Virtual Machine

Contract

Network	Contract Address
Base Sepolia	0x57AB1E2c6289aCe985Bd5c5571EbF6d98CD41Ab7

Token Addresses

Network	Token	Address
Base Sepolia	USDC	0x036CbD53842c5426634e7929541eC2318f3dCF7e
Base Sepolia	CBTUSD	0x57AB1EFE59b1C7b36b1Dc9315B4782bCcBb83721

CBTUSD is a testnet custom stablecoin on Base Sepolia, used as the example token throughout this documentation. Your custom stablecoin address will be provided separately during onboarding.

Solana Virtual Machine

Program

Network	Program ID
Solana Devnet	9vDwZVJXw5nxymWmUcgmNpemDH5EBcJwLNhtsznrgJDH

Token Mints

Network	Token	Mint Address
Solana Devnet	USDC	4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU
Solana Devnet	CBTUSD	5P6MkoaCd9byPxH4X99kgKtS6SiuCQ67ZPCJzpXGkpCe

CBTUSD is a testnet custom stablecoin, used as the example token throughout this documentation. Your custom stablecoin mint address will be provided separately during onboarding.

Program Derived Addresses (PDAs)

These accounts are deterministically derived from the program ID using the seeds shown. You do not need to store them — derive them at runtime using PublicKey.findProgramAddressSync.

Account	Address	Seeds	Role
Pool	68xwTJYRyUdULbb5ve4JMWTc2xvw9wQmtEj9GRoHSenF	["liquidity_pool"]	Central pool state — holds fee rate, fee recipient, and supported vault list
Whitelist	8zVAo6z2juAcVMkn3booA4yMGym5BPUJey2iN1Nq7Hvr	["address_whitelist"]	Address allowlist checked against the transaction signer on every swap

Token vaults and vault token accounts are derived per-mint at runtime:

// Vault PDA (logical owner for a token's reserves)
const [vault] = PublicKey.findProgramAddressSync(
  [Buffer.from("token_vault"), pool.toBuffer(), mintAddress.toBuffer()],
  programId
);

// Vault Token Account (where reserves actually live)
const [vaultTokenAccount] = PublicKey.findProgramAddressSync(
  [Buffer.from("vault_token_account"), vault.toBuffer()],
  programId
);

Constant Program Addresses

These well-known Solana program addresses are required as accounts in every swap instruction.

Program	Address
SPL Token Program	TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA
Associated Token Program	ATokenGPvbdGVxr1b2hvZbsiqW5xWH25efTNsLJA8knL
System Program	11111111111111111111111111111111

Privacy notice: All transactions on devnet and testnet blockchains are publicly visible. To protect your privacy during testing, we recommend using a dedicated test wallet rather than a personal wallet, as your wallet address and transaction history may be viewable by anyone on the blockchain.