Overview

Cocoon is a private permissioned blockchain for institutional finance — purpose-built so that banks, asset managers, and their clients can settle tokenized assets and cash with full regulatory compliance, without exposing transaction details to the public.

Privacy with public proofs. Transaction data never leaves your infrastructure. Only cryptographic proofs and state roots are posted to Ethereum — converting "trust us, our database is correct" into "verify that our committed state evolved correctly."

What Cocoon Does

Conventional blockchains force a trade-off: public chains expose every transfer to anyone with a node, while private chains sacrifice the settlement finality and neutrality of a public ledger. Cocoon breaks that trade-off.

	Traditional approach	Cocoon approach
Transaction visibility	Public to all, or siloed in a single operator's DB	Private within permissioned operator infrastructure
Settlement proof	Trust the operator	ZK proofs verified on Ethereum
Access control	Contract or function level at best	Contract, function, and argument level
Selective disclosure	Access control only — share everything or nothing	ZK proof per disclosed data point — verifiable without raw data access
Compliance	Manual, post-trade	Enforced on-chain at transfer time via identity claims
Cash leg	Off-chain bank transfer	Confidential digital cash (DBC) settled atomically
Identity	Centralised KYC database	Portable on-chain identity, selective document disclosure

Operators — banks or asset managers — run Cocoon inside their own infrastructure. Their clients' positions, transfers, and documents stay there. Ethereum receives only the cryptographic fingerprints needed for independent settlement verification.

Products

Tokenized Money Market Fund

Available now. Issue, transfer, and redeem MMF shares as ERC-3643 permissioned tokens with atomic DBC cash settlement and built-in compliance checks.

Intraday Repo & Collateral Management

In development. Collateralised short-term lending with intraday margining, automated substitution, and tri-party settlement — all settled on Cocoon.

Cross-Border Payments

In development. FX-linked DBC transfers across operator nodes with near-instant settlement finality anchored to Ethereum.

Who Cocoon Is For

Financial institutions — banks and asset managers who need to offer tokenized products to institutional clients while meeting their own regulatory and data-residency obligations. Cocoon runs entirely inside your existing infrastructure boundary.

Compliance and legal teams — every transfer is gated by on-chain identity claims (KYC/AML status, accreditation, jurisdiction). Compliance rules are code, not convention. Audit trails are cryptographically verifiable without requiring public disclosure.

Developers and platform engineers — Cocoon is built on Erigon's modular component framework. Each layer (identity, cash, proving, tokens) is an independently deployable component with a stable RPC interface. Existing Ethereum tooling works out of the box.

Regulators and auditors — ZK proofs posted to Ethereum give independent assurance of correct state transitions without needing access to raw transaction data. Selective disclosure lets institutions share exactly what is required for examination, nothing more.

Navigate the Documentation

How It Works

Architecture overview: the four-layer stack, privacy model, and transaction lifecycle.

Use Cases

Detailed guides for each financial product built on Cocoon.

Components

Reference for every platform component: tokens, cash, identity, ZK proving, and more.

Operator Guide

Deploy and configure Cocoon inside your infrastructure.