Polygon | POL (@0xPolygon): New Privacy Upgrade for Polygon CDK: Launch Private Chains Connected to Global Liquidity

New Privacy Upgrade for Polygon CDK: Launch Private Chains Connected to Global Liquidity Chose your level of privacy with Polygon CDK: institutional-grade confidentiality for custom blockchains, powered by @SuccinctLabs. Transaction data is designed to stay inside infrastructure your institution owns and operates, with native access to the Open Money Stack for fiat ramps, wallets, and global liquidity. Under the hood, CDK now offers a validium configuration with privacy powered by Succinct. Ethereum receives only a cryptographic commitment and a zero-knowledge proof. It verifies the chain is operating correctly without seeing the transactions. Private data, public verification Raw transaction data never hits a public network. Batch data stays in an institution-operated data availability environment. Ethereum receives a cryptographic commitment and a zero-knowledge proof. Ethereum confirms the chain is operating correctly. It never sees the transactions. The proving system is Succinct's SP1 Hypercube, already in production on Katana Network. Settlement is based on validity proofs, not a trusted operator with visibility into institutional data. Composable privacy Role-based access controls gate RPC endpoints and block explorers through enterprise identity systems like Okta or Azure AD. Policies are enforced at the contract and function level. Counterparties see only the transactions they participate in. Auditors get scoped read access. Regulators get selective disclosure. Chain operators retain full visibility. Even operational metadata (block contents, transaction counts, gas usage) does not need to be publicly exposed. Privacy is a spectrum CDK gives institutions five levels they can compose, with no migration between them: 1. Permissioned access: role-based RPC, private explorer, enterprise SSO through Gateway. Access control without data confidentiality. 2. Confidential chain (validium): transaction data stays inside the institution's infrastructure. Only a cryptographic fingerprint settles to Ethereum. This is the newest config., built with Succinct. 3. Confidential compute (TEE): trusted execution environments for workloads sealed even from the chain operator. Dark-pool matching, encrypted RFQ, sealed-bid auctions. 4. Confidential tokens (FHE): fully homomorphic encryption on permissioned token rails. Balances and transfer values stay encrypted onchain. Precedent: Apex Group's T-REX Ledger with Zama on ERC-3643. 5. Confidential user transactions (client-side ZK): shielded pools at the wallet layer through Hinkal. Senders, receivers, and amounts unlinkable onchain. Selective disclosure to auditors through viewing keys. Start at one level. Compose more as requirements evolve. Liquidity stays open Every CDK chain ships connected to Agglayer. A private CDK chain reaches Ethereum, connected L1s and L2s, and non-EVM networks, like Miden, through the same ZK-proven settlement layer. When a regional bank launches stablecoin rails on a private CDK chain, its clients settle with counterparties on other chains, tap stablecoin liquidity elsewhere, and access the full stack of ramps and offramps in the Open Money Stack. The chain is private. The economy around it is not. Own your rails A private CDK chain is built for institutions that are already past the question of whether to come onchain and are now asking how to do it without compromising on privacy, compliance, or ownership. The following types of institutions may benefit from the Open Money Stack, subject in each case to applicable laws and regulations: Banks launching tokenized deposit products Payments companies standing up stablecoin corridors Asset managers issuing tokenized funds Regional banks offering stablecoin rails to corporate clients Crypto-native teams that need high throughput with enterprise SLAs Polygon CDK is private where it matters. And actually connected where it counts. If your team is evaluating private chain architectures for tokenized deposits, settlement, or stablecoin rails, reach out.