Regulatory compliant smart contracts built for the future of securities, leveraging the power, security, and transparency of the blockchain
Switch branches/tags
Nothing to show
Clone or download
Latest commit 8b60b80 Nov 7, 2018
Type Name Latest commit message Commit time
Failed to load latest commit information.
contracts TransferFrom bug and spelling Nov 7, 2018
docs Formatting and link updates Oct 31, 2018
LICENSE Initial commit Oct 30, 2018 Image now link to their respective destination Nov 1, 2018

Hosho Infura

The Trading Platform

The trading platform is a regulatory-compliant suite of smart contracts serving as an Alternative Trading Solution (ATS) that allows trading and fast settlement of securities in t-0 time. Built on the Ethereum chain, the platform provides secure, fault-tolerant, transparent, and fast transaction settlement while being compliant to regulatory requirements.

The platform provides methods for issuance of security tokens which can be customized to represent various types of securities. The security tokens are ERC-20 compliant and compliant with the Delaware General Corporate Law, Title 8.

This project describes the set of Ethereum contracts that represent tZERO's token and trading functionality. See below for instructions and walk-throughs for third-party integration and customization.


For a token to be tradable, it first has to be defined, created and then be constrained within the set of regulatory rules to ensure compliance with the trading laws for the parties involved (investors, broker-dealers, and custodians).

Detailed Design Diagram

The tokens are created and their trades validated within the following interrelated set of components:


The token contract that defines and creates the tokens which are the securities to be traded.

See the Token contract page for in-depth details.


The registry is the grouping of storage, investor, broker-dealer, and custodian contracts that define and coordinate the behavior of these interacting entities.

See the Registry page for in-depth details.


The Compliance is a contract that houses the set of trade rules and exemptions (e.g. Reg A, Reg D, etc.). The compliance rule set allows valid trades and stops the improper trades from taking place.

See the Compliance page for in-depth details.



Contract Address
Storage 0x2d1477dd9c494e8758ec8d03f9f8b838ce394414
Custodian 0x2963488e2a140ca324e086ab8f89b5d533f1081d
Broker 0x3ecb8f0d127e22d436b26fccad4f38d7f5b91ee9
Investor 0x857f6a42634a14847cc4e0226f36906f0a77cee3
T0kenCompliance 0x0e108767f1c207a5a045ac67d488b3447e7e0eae
RestrictAll 0x206616df4c55a7af9395f2d906477f0dbb45369a
T0ken 0xc4bf277257c140a799b785c6c5096c6da7ef6a62

Third-Party Integration

See the Third Party Integration page for in-depth details.


This project is licensed under the Apache 2.0 license.