The Bank of England has released the final report from its DLT Innovation Challenge 2025, a collaborative effort with the BIS Innovation Hub’s London Centre. Released recently this month, the document offers fresh practical insights into how distributed ledger technology could reshape wholesale payments and settlement. Rather than signaling any immediate policy shift, the exercise aimed to deepen understanding of DLT’s real-world potential and limitations in high-value financial infrastructure.
Deputy Governor Sarah Breeden, in her foreword, underscores the rapid evolution of crypto-asset markets and the promise of embedding payments more efficiently into the digital economy.
She notes that DLT could deliver faster, lower-cost transactions with reduced intermediation, shorter settlement cycles, and automated smart contracts.
These advances might unlock liquidity across a broader range of assets, widen market access, and strengthen their use as collateral—ultimately supporting households, businesses, and financial stability.
At the same time, Breeden stresses that any DLT deployed in regulated systems must match the operational resilience, clear accountability, and irrevocable settlement finality of today’s infrastructure while preserving scalability.
The bank continues to back responsible private-sector tokenization and is exploring tokenized wholesale transactions settled in central bank money.
The challenge brought together a diverse mix of participants, including financial institutions, technology providers, and academic specialists such as Ava Labs, Chainlink, Aave Labs, Circle, Digital Asset, KPMG, Hedera, HSBC, Kaleido, Rayls, and the Scottish Centre of Excellence in Digital Trust and DLT.
Over four focused themes—settlement finality and security, scalability, network and asset control, and interoperability—they tested a wide array of designs, from permissioned and permissionless networks to varied consensus methods, layered architectures, and cross-system bridges
.Key findings highlight unavoidable trade-offs.
On settlement finality, participants showed how constrained validator groups, improved data propagation, deterministic consensus, and layered models can accelerate irrevocability, yet none deliver instant certainty without shifting risk or reliance elsewhere.
Scalability solutions split between on-chain optimizations (native Layer-1 tweaks and horizontal subnet distribution) and off-chain techniques (Layer-2 roll-ups and middleware orchestration).
While these approaches can boost throughput dramatically, they often add complexity that affects finality, governance, and resilience.
Network and asset control emerged through permissioned validator sets, smart-contract rules, off-chain governance councils, and data-privacy tools such as encryption and sharding.
Public permissionless chains relied heavily on application-layer controls and centralized components to meet compliance needs.
Interoperability strategies ranged from native protocol links and cross-chain bridges to oracles and middleware for connecting DLT platforms with traditional real-time gross settlement systems.
Each model trades atomic certainty for flexibility or security, frequently relocating rather than eliminating trust dependencies.
The report concludes that DLT has advanced technically, demonstrating secure, scalable, and interoperable designs. Yet broader issues of governance, resilience, and integration remain critical. These insights will shape the Bank’s ongoing work on tokenized asset settlement in central bank money and its regulatory stance on public permissionless ledgers.