On April 27, 2026, the Office of Foreign Assets Control (OFAC) updated its Iran-related and Counter Terrorism sanctions program, including entries linked to Bank Markazi Jomhouri Islami Iran (Central Bank of Iran).

The update forms part of a broader enforcement action targeting Iran’s oil trade and associated infrastructure. The U.S. Treasury confirmed that the action extends beyond financial institutions to shipping operators, intermediaries, and entities facilitating petroleum flows through non-standard channels.

Alongside traditional identifiers, OFAC has associated blockchain addresses with the Central Bank of Iran, extending the designation perimeter to on-chain activity.

Read More: U.S. Department of the Treasury press release

Tron addresses associated with the Central Bank of Iran designation

As part of the update, two Tron addresses have been linked to the Central Bank of Iran:

TTiDLWE6fZK8okMJv6ijg42yrH6ijg42yrH6W2pjSr9

TNiqqAXBp9EjUqhDhrwrfvAA8U3GUQZH81

These addresses should be treated as sanctioned counterparties.

Both operate on the Tron network, which is widely used for high-volume USDT transfers. Their inclusion in the designation extends sanctions exposure into transaction flows routed through stablecoin infrastructure, where liquidity is concentrated and frequently intermediated.

The designation does not isolate risk to these addresses alone. It introduces exposure across the transaction networks in which they operate.

$344 million in USDT frozen following identification of addresses

Following identification of these addresses and their association with a sanctioned entity, Tether confirmed the freezing of more than $344 million in USDT in coordination with OFAC and law enforcement authorities.

The freeze prevented further movement of funds held in the identified wallets.

This sequence is relevant from a compliance standpoint: addresses were identified, linked to a sanctioned entity, and funds were subsequently restricted at the issuer level. Where balances are held in centrally issued stablecoins, enforcement can be applied directly once attribution is established.

On-chain activity linked to the identified addresses

Scorechain analysis shows that both addresses are connected to transaction flows involving exchanges, service providers, and cross-chain infrastructure rather than operating as isolated endpoints.

Activity linked to these addresses includes interactions with services that aggregate liquidity, such as centralized exchanges and decentralized protocols. These interactions indicate that transaction flows are routed through intermediaries, rather than occurring as direct transfers between counterparties.

In addition, Scorechain observes interactions associated with higher-risk activity types and jurisdictions, including Iran-linked exposure and offshore service providers. These interactions suggest the use of intermediary services to facilitate transaction routing.

From an investigation perspective, exposure is not limited to direct interaction with the sanctioned entity. It appears within transaction paths linking these addresses to counterparties through multiple steps.

Exposure considerations

The addition of these addresses introduces new exposure points that affect both ongoing and historical activity.

Transactions do not need to involve direct interaction with a sanctioned address to create exposure. Risk may arise through intermediaries, including exchanges, liquidity providers, and multi-step transaction paths.

This is particularly relevant where transaction flows are routed through services that aggregate liquidity or obscure direct counterparties. In such cases, exposure is embedded within the transaction path rather than visible at the endpoint.

Historical transactions may require reassessment following the update, as previously unflagged activity may now fall within the sanctions perimeter due to newly identified addresses.

Scorechain data update

Scorechain has integrated the latest OFAC designation data, including the Tron addresses associated with the Central Bank of Iran.

These updates are available across wallet screening, transaction monitoring, and investigation workflows. Clients can identify direct and indirect exposure and trace transaction paths involving the identified addresses.

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