What Polygon is
Polygon is an EVM-compatible proof-of-stake chain for Ethereum, long known as Polygon PoS and now called Polygon Chain by its developer, Polygon Labs. Its validators make blocks final through milestones, typically within a few seconds, and checkpoints anchor its state to Ethereum.
Its native token is POL, which replaced MATIC in September 2024, and Polygon Labs positions the chain for payments and stablecoins. Exchanges and payment companies use it for quick token transfers with Ethereum's tooling, which is why it is one of the chains our custody module supports.
What it does in your platform
Custody & wallets
Gives each customer a Polygon address for POL and the ERC-20 tokens you list, credits deposits once a milestone has made their block final, and signs withdrawals under policy. As an EVM chain, it runs on the same connector as Ethereum, with its own settings.
How the connection works
The module reads Polygon over the same JSON-RPC interface as Ethereum, from your own node or a node provider such as Infura, Alchemy or QuickNode, and signs through your custody provider or your own keys.
An address per customer
The module gives the customer a Polygon address, which receives POL and every ERC-20 token you support on Polygon.
Blocks, then milestones
The module reads each new block for transfers to your addresses, and validators agree on milestones that make blocks final.
Final within seconds
The module asks the node for the latest block tagged 'finalized' and counts a deposit once its block is at or below it.
Screened and credited
The deposit is screened and credited, and the movement appears in the backoffice.
A withdrawal signed
After limits, screening and approvals, the transaction is signed by your custody provider or your own keys, sent to the network and reconciled once final.
Next to other chains
Polygon shares Ethereum's address format and node interface, so it runs on the module's EVM connector with its own node access, tokens and finality rule. The policies, approvals, screening and reconciliation are the same as on every other chain.
Tokens on Polygon are separate contracts from their namesakes on Ethereum. The ledger keeps each as its own currency, so a deposit on Polygon is never credited as if it had arrived on Ethereum.
When Polygon fits best
A strong fit when
- Your customers hold POL or move stablecoins and other tokens on Polygon.
- You want EVM tooling with deposits final within seconds.
- You already run Ethereum and want another EVM chain with little extra work.
Also worth a look
- An Ethereum layer 2 such as Arbitrum or Base, if you prefer a rollup that posts its data to Ethereum.
- BNB Chain, another EVM chain, if that is where your customers are.
How we get you live
Node access
We connect the module to Polygon through a node provider such as Infura, Alchemy or QuickNode, or through your own Bor and Heimdall nodes.
Custody and tokens
We check that your custody provider supports Polygon and each token you list, by its contract address on Polygon, or set up your own keys.
Finality rule
We set deposits to count once a milestone has made their block final, read through the node's 'finalized' block tag.
A testnet run
The whole flow runs on Amoy, Polygon's testnet, before real funds move.
