As financial markets evolve toward digitisation, a fundamental question is emerging at the intersection of law and technology: who truly controls an investment structure — the security trustee or the smart contract?
Smart contracts promise automation, transparency, and efficiency. Security trustees, on the other hand, bring legal enforceability, fiduciary oversight, and investor protection. While both aim to build trust, they operate in fundamentally different ways.
Rather than replacing one another, the reality is more nuanced — and understanding this balance is becoming critical for issuers, investors, and structuring professionals.
Smart contracts are self-executing programs deployed on blockchain networks. They automatically enforce predefined rules when certain conditions are met.
In theory, they remove:
Human discretion
Administrative delays
Counterparty risk
For example, a smart contract can:
Automatically distribute coupon payments
Trigger liquidation events
Enforce collateral thresholds
This has led to the popular notion that “code is law.”
But is it really?
A security trustee operates within a legal framework to hold and enforce security on behalf of investors.
Their core responsibilities include:
Holding collateral and security interests
Acting on behalf of noteholders or lenders
Enforcing rights during default scenarios
Managing negotiations and restructurings
Unlike smart contracts, trustees:
Exercise judgment
Interpret legal agreements
Navigate complex, real-world scenarios
Most importantly, their authority is recognised by courts and regulators.
While smart contracts are powerful, they are not infallible.
A smart contract may execute automatically, but it does not inherently carry legal recognition across jurisdictions.
If a dispute arises:
Courts interpret legal documents, not code
Errors in code may not reflect contractual intent
Smart contracts do exactly what they are programmed to do — nothing more, nothing less.
This creates risk when:
Market conditions change
Parties need flexibility
Unexpected events occur
Many assets and enforcement actions exist outside the blockchain:
Real estate
Shares in private companies
Physical collateral
Smart contracts cannot directly enforce claims over these assets.
Security trustees bridge the gap between digital execution and legal reality.
In a default scenario, trustees:
Initiate enforcement proceedings
Take control of secured assets
Act in accordance with legal frameworks
This is something no smart contract can independently achieve.
Trustees can:
Delay enforcement if it benefits investors
Negotiate restructuring terms
Coordinate between multiple stakeholders
This human layer is essential in complex transactions.
Unlike code, trustees are accountable.
They owe duties to investors and must act in their best interests — a critical safeguard in times of uncertainty.
The phrase “code is law” is often misunderstood.
In reality:
Code executes instructions
Law determines rights
If a smart contract behaves incorrectly or unfairly, parties will still turn to legal systems for resolution.
This means that ultimate control does not sit solely within the code — it sits within enforceable legal structures.
Rather than competing, security trustees and smart contracts are increasingly working together.
Smart Contracts Handle:
Automation of payments
Monitoring of conditions
Operational efficiency
Security Trustees Handle:
Legal enforcement
Dispute resolution
Investor protection
This hybrid model creates:
Efficiency through technology
Security through legal oversight
The answer depends on how “control” is defined.
Operational control may sit with smart contracts
Legal and economic control remains with the security trustee
In moments that matter most — defaults, disputes, restructurings — control ultimately shifts back to the trustee.
Smart contracts are transforming how transactions are executed, but they are not a replacement for legal infrastructure.
Security trustees remain essential because they provide:
Enforceability
Accountability
Flexibility
As financial structures become increasingly digital, the question is no longer “trustee or smart contract?” — but rather:
how do we design structures where both work together effectively?
For investors and issuers alike, the answer lies in recognising that technology enhances trust — but it does not replace it.
In a world of programmable money and tokenised assets, true control is not just about execution — it’s about enforceability.
And that is where the role of the security trustee remains not only relevant, but indispensable.
