Deployed Addresses

Always verify addresses before sending funds. Confirm them against the official app and the block explorer. Addresses here reflect the repository’s deployment record (contracts/deployments/latest.json) and may change as the protocol is upgraded or rolled out to new chains.

Core contracts (live)

The production path today is Sepolia (selling) → Base (buying + payouts).

Contract	Chain	Address
SethVault (proxy)	Sepolia	`0xa2aa891cf73cf56b22d8af886cbab7d2f8706794`
PaymentCollector (proxy)	Base	`0x77dfdfb009847924c65e09fb9ad998a132f97079`
Payout (proxy)	Base	`0x3b0abc4c5630e9d70b4e80af793a12be053164b2`

Buyers and sellers interact with the proxy addresses above. Each proxy forwards to an upgradeable implementation.

Implementation & deployment details

Contract	Implementation	Start block	Notes
SethVault (Sepolia)	`0xe50df9f174de25f6e74ec6e52e95f328a711a535`	11270857	min deposit 1 SETH (`1e18`)
PaymentCollector (Base)	`0xf71ddde32a6183ae7fe4fdf09c25a9faa701d3a7`	48622604	Chainlink ETH/USD `0x71041dddad3595F9CEd3DcCFBe3D1F4b0a16Bb70`, max stale 1200s
Payout (Base)	`0x7074d643de1fb0453c7a23a84edc6751825f3243`	48622106	Chainlink ETH/USD `0x71041dddad3595F9CEd3DcCFBe3D1F4b0a16Bb70`, max stale 1200s

Payment chains

A PaymentCollector is deployed per payment chain. Each accepts the chain’s native coin (priced via the listed Chainlink native/USD feed) plus the standard USDC, USDT, and DAI stablecoins, each valued at $1.

The stablecoins are each chain’s own canonical token contracts — not deployed by SellPolia — so their addresses aren’t listed here. For the exact token contracts a collector accepts on each chain, query /api/market. Base is the chain enabled at runtime today.

Base · Chain ID 8453 · live

PaymentCollector: 0x77dfdfb009847924c65e09fb9ad998a132f97079
Chainlink ETH/USD feed: 0x71041dddad3595F9CEd3DcCFBe3D1F4b0a16Bb70 · start block 48622604

Ethereum (Mainnet) · Chain ID 1

PaymentCollector: 0x3b0abc4c5630e9d70b4e80af793a12be053164b2
Chainlink ETH/USD feed: 0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419 · start block 25531053

Optimism · Chain ID 10

PaymentCollector: 0x3b0abc4c5630e9d70b4e80af793a12be053164b2
Chainlink ETH/USD feed: 0x13e3Ee699D1909E989722E753853AE30b17e08c5 · start block 154218020

Arbitrum · Chain ID 42161

PaymentCollector: 0x3b0abc4c5630e9d70b4e80af793a12be053164b2
Chainlink ETH/USD feed: 0x639Fe6ab55C921f74e7fac1ee960C0B6293ba612 · start block 483776556

BNB Chain · Chain ID 56

PaymentCollector: 0x3b0abc4c5630e9d70b4e80af793a12be053164b2
Chainlink BNB/USD feed: 0x0567F2323251f0Aab15c8dFb1967E4e8A7D42aeE · start block 109946665

For the definitive, machine-readable list of active payment chains, collectors, and accepted tokens, query /api/market — it advertises only what is actually enabled.

A note on the buy price

The deployment record initializes the collectors with a buy price of $0.25 per SETH (buyPriceUsdRaw = 25000000, 8 decimals), while the backend’s market config advertises $0.50. The buy price is owner-editable on-chain and can be re-tuned at any time, so the authoritative live value is always what /api/market (or the collector’s buyPriceUsd()) returns — not a fixed number in these docs.