ASX CHESS replacement (2017-2022)
Australia's main stock exchange set out to replace its CHESS clearing and settlement system with distributed-ledger technology from Digital Asset. The project slipped repeatedly and expanded in scope. In 2022 the exchange paused it, then abandoned the effort.
ASX wrote off roughly A$170 million and restarted its settlement replacement with conventional technology.
The failure became the standard cautionary tale for exchanges considering bespoke blockchain settlement.
The NYSE is attempting the same category of project: replacing part of the settlement stack with blockchain software. ASX shows that the technical choice matters less than delivering on schedule.
