Distributed ledger technologies for securities settlement – the case for running T2S on DLT

Jakob Hackel (), Wolfgang Haunold (), Hannes Hermanky () and Alfred Taudes ()
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Jakob Hackel: Vienna University of Economics and Business
Wolfgang Haunold: Oesterreichische Nationalbank (OeNB)
Hannes Hermanky: Oesterreichische Nationalbank (OeNB)
Alfred Taudes: Vienna University of Economics and Business

Monetary Policy & the Economy, 2021, issue Q2/21, 13-33

Abstract: With a view to developing the Eurosystem’s TARGET2-Securities (T2S) system further, we propose a system based on distributed ledger technology (DLT) that covers all major T2S settlement functionalities and investigate it with regard to regulatory compliance, performance, cost efficiency and risk. The system we propose is a federated system comprising European central banks and central securities depositories (CSDs) as node operators. The role of the central banks is to maintain the cash accounts; provide regulatory-approved “smart contract factories” defining workflows for securities issuance, lifecycle management and matching, settlement, auto-collateralization and corporate actions; and perform the oversight function. The CSDs maintain securities accounts, offer notary services for issuers, perform corporate actions, and carry out settlement. CSD nodes collect settlement requests from external trading and clearing systems, forward them to other CSDs for cross-border settlement, bundle them into transaction blocks and prepare the blocks for settlement. The ensuing ledger updates occur via a fully automated consensus process between the central banks. In T2S on DLT, specialized smart contracts provide the flexibility to settle a range of digitally represented assets, define novel workflows – and allow for variable settlement times. Rather than having to conform to a uniform settlement time of T+2, participants can choose among smart contracts that settle within seconds or longer periods of time. This feature is expected to reduce capital costs and, given the DLT-based enforcement of settlement discipline, settlement failures. Apart from conforming to the current regulatory requirements, the DLT framework also enables the central banks and authorized actors to conduct status checks at a granular level and in real time. Furthermore, comparisons with similar use cases and benchmarks show that the use of current DLT solutions would allow to meet the current daily performance goals of T2S. Preliminary cost estimates based on available public information indicate that the proposed system could be built and operated efficiently. The federated structure would also support the resilience of operations given the high number of backup nodes.

Keywords: distributed ledger technology; securities settlement; smart contracts; TARGET2-Securities (search for similar items in EconPapers)
JEL-codes: E44 G21 G23 K22 (search for similar items in EconPapers)
Date: 2021
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