Chainalysis Adds Arc Blockchain: AML and Token Coverage Explained
Chainalysis has integrated Arc, Circle's EVM-compatible Layer 1 blockchain, into its full suite of compliance and investigation products. The move covers every fungible and non-fungible token deployed on the network under the ERC-20 and ERC-721 standards, adds those tokens automatically as they are minted, and brings them into KYT transaction monitoring, entity screening, and the Reactor investigation tool simultaneously. For accounting firms, compliance officers, and CFOs running crypto accounting software stacks, this is a structural change in how a stablecoin-native chain gets treated from an AML and bookkeeping perspective, and it raises questions that need answers now, not after the first suspicious transaction alert arrives.
What Arc Is and Why It Matters for Compliance Teams
Arc is a Layer 1 blockchain purpose-built for stablecoin finance. It sits directly inside Circle's full-stack platform, uses USDC as its native gas token, and is engineered for high-throughput payment activity, with sub-second finality and a capacity exceeding 3,000 transactions per second. That combination of Circle's issuer infrastructure, USDC gas, and EVM compatibility is not incidental: Arc is designed so that stablecoin settlement is native to the chain rather than bolted on top.
Why a stablecoin-native gas model changes the risk picture
When gas is paid in a fiat-referenced stablecoin rather than a volatile native token, the friction of using the network for high-volume, high-frequency transfers drops significantly. That is attractive to legitimate payment businesses and, by extension, to bad actors seeking to move value quickly at low cost. Compliance teams have seen this dynamic play out on TRON, where USDT's dominance as a settlement layer attracted a disproportionate share of illicit flows. The AML lessons from the USDT-TRON terrorist financing shift are directly applicable here: high throughput plus stablecoin liquidity demands monitoring infrastructure that can keep pace from the moment the chain goes live, not months later.
Arc's EVM compatibility also means that any smart contract already audited and deployed on Ethereum or another EVM chain can be redeployed on Arc with minimal modification. The universe of tokens in scope is therefore open-ended and growing daily.
The Chainalysis Integration in Detail
Chainalysis has announced three distinct coverage layers for Arc, each addressing a different part of the compliance workflow.
Automatic token support via KYT
The most operationally significant element is automatic token coverage. When a new ERC-20 or ERC-721 token is deployed on Arc, it is added to the Chainalysis platform without any manual intervention from the customer or from Chainalysis. KYT (Know Your Transaction) then monitors those tokens in real time, generating actionable alerts when transaction patterns match risk criteria. For compliance teams, this removes the coverage lag that has historically created blind spots on newer networks: a token launched this morning is, in principle, subject to the same monitoring regime as USDC itself.
Entity screening integration
Arc addresses and entities are also covered by Chainalysis's entity screening products. This means that when a counterparty submits a wallet address for onboarding or a payment instruction arrives carrying an Arc address, the screening layer can check that address against known entity clusters, sanctions lists, and risk categories without requiring a separate manual lookup or a parallel tool. For firms that process payments on behalf of clients, this integration is relevant to their VASP obligations under FATF Recommendation 16 (the Travel Rule), since entity-level attribution is a prerequisite for compliant information transfer.
Reactor investigation tooling
Chainalysis's Reactor product, used by financial institutions and law enforcement to trace fund flows and visualise transaction graphs, now covers Arc. Investigators can follow funds across the Arc network, map money movements visually, and identify potential illicit activity. For accounting firms conducting AML audits or assisting with regulatory enquiries, Reactor access on Arc means forensic tracing workflows do not require a manual workaround or a separate chain explorer when transactions touch Arc addresses.
Accounting and Bookkeeping Implications
The compliance layer is one side of the story. The other is how Arc transactions are classified, recorded, and reported in a firm's books. Arc is a new chain, and its treatment inside crypto accounting software depends on several decisions that finance teams need to make proactively.
Chain identification and asset classification
Because Arc is EVM-compatible, many tokens will share contract address formats with Ethereum tokens. A naive import process that does not distinguish by chain ID risks misclassifying an Arc-native USDC transfer as an Ethereum USDC transfer, or double-counting where the same address appears on multiple chains. Firms must confirm that their digital asset accounting software correctly tags Arc transactions with Arc's chain identifier before any reconciliation runs. This is not a theoretical concern: EVM chain confusion has generated material restatement risk on multi-chain portfolios before.
USDC-as-gas: a cost or an asset disposal?
On most EVM chains, gas is paid in a volatile native token, and the accounting treatment of gas costs is typically a realised disposal of that token at its market value at the time of the transaction. Arc inverts this model: gas is paid in USDC, a fiat-referenced stablecoin. If USDC is held at cost (as a financial instrument that does not deviate materially from its dollar peg) rather than marked to fair value, the gas expense is closer to a cash transaction cost than a capital gains event. However, if USDC is held at fair value under IAS 32/IFRS 9 or under ASC 820 (depending on jurisdiction and entity type), even a de minimis peg deviation at the moment of gas payment could generate a realised gain or loss. Finance teams need a documented policy for USDC gas costs on Arc before volumes become material.
NFT minting and ERC-721 coverage
The automatic coverage extends to ERC-721 (non-fungible) tokens. For clients in media, gaming, or real-world asset tokenisation who use Arc to issue NFTs, accounting teams face the standard NFT recognition questions: is the NFT an intangible asset, inventory, or a financial instrument? The Chainalysis coverage ensures these assets are visible in the monitoring layer, but accounting classification remains a manual judgment call that crypto bookkeeping software cannot make autonomously. Firms should document their classification basis at the point of first issuance.
What Compliance and Finance Teams Should Do Now
The Chainalysis announcement is an infrastructure update, not a regulatory mandate. But it creates a de facto expectation: if monitoring tooling covers Arc from launch, compliance programs that do not extend their policies to Arc will appear deficient in any regulatory examination or audit that follows. Understanding how blockchain analytics intersects with sanctions compliance obligations is the starting point for firms building out their Arc-specific controls.
Immediate policy and systems actions
Compliance officers and CFOs should work through a short checklist before any Arc transactions hit their books or monitoring queues. First, confirm whether the firm's current VASP registration or licence covers activity on Arc, or whether Arc's stablecoin-native structure places it in a different regulatory category under local law. Second, update transaction monitoring policies to include Arc addresses explicitly, even if the underlying tooling already covers them automatically. Regulators expect written policies to match technical capabilities. Third, instruct the firm's crypto accounting software provider to confirm chain-level support for Arc and verify that chain ID tagging is live before processing any Arc transactions in production. Fourth, document the USDC gas cost accounting policy and get sign-off from the engagement partner or CFO before the first Arc transaction settles on the books.
Client communication for accounting practices
Accounting firms advising digital asset businesses should flag Arc proactively in client communications. Clients using Circle's platform for stablecoin payments may already be transacting on Arc, or plan to, without having considered whether their accountant's tooling is ready. A brief client advisory covering chain identification, gas cost policy, and AML screening confirmation will demonstrate technical competence and head off year-end reconciliation issues before they become material. It is also an opportunity to review whether clients' existing crypto compliance reporting frameworks are chain-agnostic or need explicit extension to Arc.
The Broader Signal: Automatic Coverage as the New Standard
The most consequential element of the Chainalysis announcement is not Arc specifically. It is the principle of automatic token coverage. Historically, compliance tooling required manual submission or a waiting period before a newly deployed token was covered. During that gap, transactions involving the token could not be reliably screened or traced. Automatic coverage, where any ERC-20 or ERC-721 token is in scope from deployment, eliminates that lag by design.
This matters because token proliferation on EVM chains is rapid. On established networks, thousands of tokens are deployed each week, ranging from legitimate payment instruments to purpose-built obfuscation vehicles. A monitoring architecture that catches all of them from inception, without requiring manual onboarding, is materially better from a financial crime risk management perspective than one that relies on curated token lists.
For firms evaluating their crypto accounting software and AML tooling stack, automatic token coverage should now be treated as a baseline requirement rather than a differentiating feature. If a tool requires manual token submission before coverage begins, it carries an inherent gap that regulators, auditors, and counterparties will increasingly scrutinise as chains like Arc normalise automatic coverage.
The stablecoin payment infrastructure landscape is consolidating around a small number of high-throughput, EVM-compatible chains. Arc is one of the earliest examples of a chain where the issuer (Circle), the network architecture, and the gas token are vertically integrated. That integration will likely attract significant institutional payment volume, and the compliance and accounting questions it raises will become mainstream faster than most finance teams expect. Getting ahead of chain identification, gas cost policy, and AML programme scope now, while volumes are low, is considerably cheaper than correcting errors at scale.
Frequently Asked Questions
Does Chainalysis Arc support cover tokens deployed before the integration went live?
The Chainalysis announcement describes automatic coverage for tokens deployed on Arc going forward. Firms with pre-integration Arc token exposures should confirm directly with their compliance tooling provider whether historical token data has been backfilled or requires a separate onboarding request.
How should USDC gas costs on Arc be recorded in the general ledger?
That depends on the firm's accounting policy for USDC. If USDC is carried at its dollar peg as a monetary item, gas costs are recorded as a transaction expense in the functional currency with no separate disposal event. If USDC is carried at fair value, each gas payment may generate a realised gain or loss equal to the difference between carrying value and the fair value at the time of payment. Firms should document their chosen policy and apply it consistently across all USDC-denominated networks.
Does Arc's EVM compatibility mean existing Ethereum AML policies apply automatically?
Not automatically. While EVM compatibility means transaction formats and smart contract standards are familiar, Arc is a distinct network with its own chain ID, its own entity clusters, and its own risk profile. Compliance policies should explicitly name Arc in their scope, and monitoring tools should be confirmed to tag Arc transactions with the correct chain identifier rather than treating them as Ethereum transactions.
What Travel Rule obligations apply to Arc transfers?
Travel Rule obligations are jurisdiction-specific and attach to the VASP's regulatory status rather than to the underlying chain. If a firm is a registered VASP subject to FATF Recommendation 16, Arc transfers above the relevant threshold (typically USD/EUR 1,000) trigger the same originator/beneficiary information requirements as any other crypto transfer. The Chainalysis entity screening integration supports the counterparty identification step, but the information transfer obligation remains the VASP's responsibility.
Should accounting firms update engagement letters to cover Arc?
If an accounting firm's engagement letter references specific blockchains or asset types, it is worth reviewing whether Arc is captured. More practically, firms should confirm their crypto accounting software produces Arc-specific transaction reports that auditors can rely on, and that the chart of accounts treatment for Arc assets is documented and consistent with the firm's existing digital asset accounting policy.
Source: Chainalysis