Infrastructure for Private Capital

BETA

The operating system for private equity and credit. Issue securities, originate loans, and manage ownership on transparent rails—no platform lock-in, full data portability.

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Live on Base Sepolia Testnet

Protocol Activity

Real-time statistics from the CapSign testnet deployment

Securities Issued
0
Equity, SAFEs, and other securities on testnet
Active Wallets
0
Smart accounts created
Financings
0
Offerings and loans originated
Total Value
$0
Capital raised and lent (USDC)

Why CapSign

Infrastructure, not a platform

Traditional cap table providers lock you into proprietary systems. CapSign is neutral infrastructure—transparent, composable, and built to integrate with the financial internet.

Open-Source Infrastructure
No black boxes. Audit the code, verify the contracts, and build with confidence. Your securities infrastructure should be transparent, not proprietary.
No Platform Lock-In
Your data, your terms. Export your cap table, integrate with any system, or fork the protocol. We're infrastructure, not a walled garden.
Fully Composable
Plug into wallets, exchanges, DAOs, and DeFi protocols. Build custom workflows, integrate with existing systems, or create entirely new products.
Built for Compliance
Programmable transfer restrictions, automated KYC/AML checks, and immutable audit trails. Compliance is code, not paperwork.

Who It's For

Built for the future of capital formation

Whether you're raising capital, managing investments, or building the next generation of financial products—CapSign provides the infrastructure you need.

Lenders

Originate loans, generate legal documents, and collect digital signatures. Streamline your lending operations from application to payoff.

Startups

Issue SAFEs and equity without transfer agents. Manage your cap table, vesting schedules, and investor relations on transparent infrastructure.

Investment Vehicles

Launch SPVs, syndicates, and funds with instant investor onboarding. Automate distributions and maintain transparent ownership records.

Developers

Build securities products on open, composable infrastructure. Full API access, GraphQL indexing, and comprehensive smart contract libraries.

Everything You Need

One platform for private securities

From investor onboarding to token issuance, document signing to distributions. All integrated, all on-chain, all compliant.

Built for Developers

Open-source smart contracts, GraphQL API, and comprehensive SDKs. Build securities products on transparent, composable infrastructure.

capsign-sdk-example.ts
import { CapSignClient } from '@capsign/sdk';

// Initialize client
const capsign = new CapSignClient({
  network: 'base-sepolia',
  provider: walletProvider
});

// Issue securities with built-in compliance
const tx = await capsign.tokens.issue({
  tokenAddress: '0x...',
  recipient: investorAddress,
  amount: parseUnits('1000', 18),
  shareClass: 'COMMON',
  restrictions: ['ACCREDITED_ONLY']
});

console.log('Transaction hash:', tx.hash);

Documentation

Comprehensive guides and API reference

Read docs

GitHub

Explore smart contracts and contribute

View source

Developer Tools

SDKs, subgraph, and integration guides

Explore tools

FAQ

Frequently asked questions

Have a different question? Contact us at hello@capsign.com

Start Building on Open Infrastructure

Deploy your cap table, issue securities, and manage ownership on transparent, composable rails. No platform lock-in, full ownership control.

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