Open verifiers versus licensed verifiers: Which model is more suitable for financial networks?

Financial networks require predictable governance, auditability, and the ability to enforce legal constraints. Based on available evidence, the permission-based validator model is better able to meet these requirements at the basic settlement level, while open verification can be supplemented in marginal areas where broad participation and neutrality are crucial. The key reason is not ideology, but operational reality: open proof-of-interest systems have concentration points that pose review and accountability challenges, while well-governed permission-based systems, despite their own trade-offs, can meet regulatory needs.

This question is time-sensitive. The size of Ethereum's validator economy has grown significantly. According to the Ethereum Foundation's pledge page (snapshot updated on February 12, 2025), approximately 41,467,082 ETH (approximately 33% of the total supply) have been actively pledged. Meanwhile, a liquidity pledge agreement called Lido stated in its token holder update report that its share of all pledged ETH in the third quarter of 2025 was approximately 23.7%. In addition, the transparency report on block construction documents significant concentrations of builders and relays on the unlicensed chain, which increases the risk that de facto small groups can influence transaction packaging.

At the other end of the design space, central banks and major institutions have launched actual prototypes of permissioned distributed ledgers, including the Bank for International Settlements Innovation Center's Dunbar Project, which used Corda and Quorum to demonstrate a multi-central bank digital currency settlement platform and elaborate on governance and operational tradeoffs that are critical to the financial network. Even enterprise-level ledger performance claims bring clarity: The Hyperledger Fabric 2.5 community benchmark achieved approximately 3000 transactions per second in controlled blind write, single-channel testing, but it should be noted that performance in actual deployments will degrade based on topology and privacy settings.

Why the financial industry is reassessing verifier design

There are two shifts that are driving the reassessment. First, the maturity of the proof of open rights shows that "unlicensed" participation does not eliminate centralization. Academic and policy research by the Bank for International Settlements has found that unlicensed proof-of-stake structures tend to create economic and operational concentration in terms of verifiers, liquidity pledge pools, and miners extractable value (MEV) capture, complicating regulatory oversight. Flashbots 'mid-2023 transparency report also documented a small number of relays and builders accounting for a large share of the block, and documented a coordinated exclusion of sanctioned Tornado Cash transactions.

Secondly, pilot projects in the public sector and banks have moved beyond the white paper stage and entered the working prototype stage. The Dunbar Project demonstrates a permissioned multi-central bank digital currency design and reveals practical governance issues such as access, identity and cross-jurisdiction rule sets that are at the heart of a regulated financial network. These specific tests shift the debate from theory to implementation details: Who is responsible when settlement fails? How to sanction or suspend participants? At what level is the policy implemented?

What does the latest evidence show

The tested facts outline the trade-off space. The following data captures the scale, concentration, and controlled performance claims that are critical to selecting a validator model.

Evidence data points:

Ethereum pledged volume: approximately 41,467,082 ETH (approximately 33% supply)--Source: Ethereum official website pledge page, last updated on February 12, 2025 (snapshot)

Lido pledged ETH share: approximately 23.7% of all pledged ETH (Q3 2025)--Source: Lido pool update, November 2025

Block building concentration: The total share of top relays/builders is approximately 80%--Source: Flashbots Transparency Report, May-June 2023

No license review risk: Coordinated exclusion of sanctioned transactions was observed--Source: Flashbots and Policy Analysis, 2023-2025 Report

Hyperledger Fabric 2.5 Benchmark: approximately 3,000 TPS (blind writing, single channel, with instructions)--Source: Hyperledger Foundation Blog, February 16, 2023

Multi-central bank digital currency prototype: permission-based design (Corda, Quorum) and involves governance trade-offs-Source: Bank for International Settlements Dunbar Project, March 2022

Regulatory suitability of proof of stake: Unlicensed proof of stake tends to be centralized; regulatory complexity-Source: Bank for International Settlements Working Paper No. 1061, April 24, 2022

Corollary: Even in the absence of formal licensing, there are centralization and censorship vectors on the open chain. In contrast, permissioned systems receive clear governance to meet accountability needs, but at the cost of trusting the governance process and the set of operators. Opinion: For wholesale financial infrastructure, this trade-off is acceptable at the base level, provided that strong supervision, logging and recovery mechanisms are built in.

Impact on central bank digital currencies and bank-led infrastructure

For central banks and real-time full settlement system operators, validator accountability is not an option. The Dunbar project's permission-based prototype demonstrates how to encode multi-jurisdiction rule sets and access processes when participants are known and governed. In the permission-based verifier model, operational responsibilities, failover and sanctions compliance can be written into entry standards and contracts. This is in line with regulatory expectations and makes incident response easier than if responsibility is spread among thousands of anonymous verifiers.

Privacy and throughput controls are also easier to adjust in a permission-based environment. Hyperledger Fabric community benchmarks show blind writing up to approximately 3,000 TPS, highlighting potential performance under optimized conditions, while clearly warning that performance will be degraded when privacy, multi-organization topologies, and complex chain codes are involved in actual deployments. Even with these instructions, the ability to plan deterministic performance envelopes and audit trails for financial infrastructure remains valuable.

Risk management is improved when the validator role is contractual. If a verifier misbehaves or fails, a licensed network can suspend its qualifications based on predefined rules. In permissionless systems, remedies rely on social coordination, fork politics, or market exit, which is slower and may not meet legal responsibilities.

Impact on institutions built on Ethereum

Institutions that use public chains for tokenization or settlement need to clearly assess centralization risks. Confirmed: Approximately one-third of ETH is pledged, with a single liquidity pledge agreement reporting approximately 23.7% of this share. It has been confirmed that block construction has been concentrated in the hands of a small number of relays and builders, and transaction reviews have occurred in practice. Corollary: Mission-critical workflows may require safeguards such as allowance lists, permission-based application layers, or off-chain certificates, even if the base layer is open.

At the same time, the global mobility and composability of open networks are strategic advantages. One practical model is the hybrid model: maintaining a set of licensed validators on the wholesale track at the base layer, while providing standardized APIs to interoperate with public networks for distribution, discovery and programmability, as policy permits. Opinion: This separation of concerns can control regulatory risk exposure without deviating from the public crypto ecosystem.

The strongest rebuttal

The rebuttal: Open verification allows anyone to join and is the best barrier against capture and long-term censorship. If pledges and block constructions are sufficiently diversified among operators, geographical locations, and clients, no single entity or cartel will be able to rule out transactions in the long term. Open networks also provide transparent, verifiable historical records and reduce reliance on institutional gatekeepers who may fail or collude.

This makes sense. Centralization along the unlicensed chain is an accidental result, not a natural rule. Market dynamics, client diversity and protocol changes can reduce centralization pressures. In contrast, licensed networks carry the risk of over-regulation, cartel behavior, or opaque decision-making. These are real shortcomings that any deployment must be mitigated through multi-stakeholder governance, clear accountability, and exit options.

What would confirm or weaken this argument

Updates showing continued or increasing concentration: Future Ethereum pledge snapshots and liquidity pledge market share disclosures, including subsequent Lido token holder updates.

Builder/Relay Concentration: Continuous transparency reports indicate whether the combined share of top relays/builders has dropped significantly or remained concentrated.

Recorded review events or reversals: evidence of transaction exclusions, or conversely, evidence of inclusion that neutrality can be quickly achieved despite sanctions pressure.

Permissioned pilot progress: Central banks or financial infrastructure institutions release documents to advance multi-central bank digital currency or distributed ledger technology settlement from prototype to limited production, with a governance framework attached.

Actual throughput and reliability: Independent measurement data from the field based on Hyperledger Fabric or similar licensed deployments compared to a laboratory benchmark and its description of approximately 3,000 TPS.

Regulatory Guidance: Clear statements from regulators on verifier accountability, audit requirements and acceptable risk controls for distributed ledger technology financial infrastructure.

Conclusion

Existing evidence suggests that at this stage, permission-based validators are more suitable as a security option for base-level financial networks, while open verification remains valuable in areas where neutrality and coverage are more important than regulatory control. The next round of data and disclosures will show whether centralization in the open chain will weaken and whether license-based pilots will mature into operational tracks.

Disclaimer : This article is for reference only and does not constitute and should not be used as legal, tax, investment, financial or other advice.