On-chain contracts are open source
The smart contracts that store cap table data — stakeholders, stock classes, issuances — run on Canton. The code is public.
Canton Network · TypeScript · OCF
Read and write cap tables on Canton — typed, validated, and ready to use
Install, connect to Canton, and start reading or writing cap table data — all in TypeScript, all in OCF format.
OcpClient
Your entry point to the SDK. Wire it to a Canton node and you can read or write cap table data right away. Ledger-only for reads, add a validator for writes.
Typed OCF responses
Every response follows the Open Cap Table Format (OCF) standard — consistent field names, typed objects, and validation built in.
OCF spec →Batch updates
Queue up multiple creates or updates and submit them in one go. Great for bulk imports, onboarding flows, or any time you need several changes to land together.
Install
npm install \
@open-captable-protocol/canton \
@fairmint/canton-node-sdk \
@fairmint/open-captable-protocol-daml-js