ASX is replacing CHESS with distributed ledger technology (DLT) developed by Digital Asset
Distributed Ledger Technology solution
As part of the CHESS replacement project, ASX will use distributed ledger technology - DLT.
DLT uses an append-only database of transactions that has two key elements:
- a shared, replicated ledger and
- a distributed database synchronising mechanism. Each transaction must reference a balance received from a previous transaction and must be cryptographically signed by the legal approver of the transaction. The solution forms an exact chain of title over time.
ASX will implement a DLT solution that is not open or public. This is because regulated markets require participants to be appropriately licensed and known to regulators - for there to be rights of reversal and error correction, and high levels of privacy and security; and for the operational benefits of net settlement to be retained in a system in which legal entities are responsible for the perfection of title to, and legal standing of, financial assets.
The replacement of CHESS with a DLT solution will be within ASX security perimeters on a private, permissioned, secure network where only known, licensed participants would be authorised to access the system, much like today. Private contractual information will be segregated and will not be shared with all participants, encrypted or otherwise. The shared and replicated aspect of the solution serves as a transaction notification and synchronisation mechanism and includes only hashes (one way cryptographic functions). This is different to the open Internet-based, 'permissionless' blockchains such as Ethereum and Bitcoin.
Public Blockchain vs ASX Private Permissioned Ledger
|Public Blockchain||ASX Private Permissioned Ledger|
Not applicable to highly regulated markets
Similar to today, but an enhanced database architecture
ASX's use of DLT will be in conjunction with other ‘traditional' technologies to ensure that the most appropriate technical solution is applied.
For further information concerning the DLT solution you can download Digital Asset's White Paper from their website: https://digitalasset.com/
DAML (Digital Asset Modeling Language)
On 19 April 2018, Digital Asset unveiled a developer program for its enterprise smart contract language, DAML. The program provides developers with tools and training so that they can use DAML to model sophisticated, multi-party applications that run on the Digital Asset Platform. For organisations interested in downloading the DAML Software Development Kit (SDK), registrations are accepted here. The ASX recommend assigning a point person within your organisation to complete the application process.
Digital Asset are writing a 10 part blog series on what properties enterprise smart contract languages need. Subscribe to the blog or check out the series here.
You can contact the ASX CHESS Replacement project team on the following email address: