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Briefing

Why verifiable legal opinions, now

In 2025 and 2026, regulators in Dubai, the EU and the US wrote into their own rules and templates what opinion practice has always assumed: an opinion has a signer, a date, a set of assumptions and a shelf life. This briefing sets out what changed, what a PDF cannot carry, and what a credential on Base records instead. V0 runs on Base Sepolia (testnet); nothing is live on mainnet.

By Lex Arbitrage (opens in a new tab), Co-Founder and CEO · Published · Last updated

LEXI is not a law firm and does not give legal advice. A credential is not a licence, a registration, or an approval by any regulator.

In one passage

A legal opinion speaks as of its date and may be relied on only by the people it names. Regulators in Dubai, the EU and the US now say so in their own rules and templates: since 9 April 2026 Dubai's VARA expects an opinion on an asset-referenced issuance to be signed by a duly registered practising lawyer, dated, on letterhead and revised when facts change; the EU's supervisors have applied a field-by-field template for asset-referenced token opinions since 12 May 2025, and reported zero such tokens authorised by 1 September 2026; the SEC replaced its 2019 framework on 17 March 2026. A verifiable legal opinion is one whose signer, date, scope and current status can be checked by the parties it names without asking the firm. That is what a LEXI credential records on Base. V0 runs on Base Sepolia testnet.

On this page
  1. The claim
  2. Regulators now say who may sign, and in what form
  3. Regulators now expect opinions to stay current
  4. The EU wrote a template, and launches still wait on opinions
  5. The US re-set the baseline on 17 March 2026
  6. Enforcement is dated and public
  7. What a PDF cannot carry
  8. What a credential carries
  9. Questions
  10. Sources

The claim

Every serious opinion letter already carries four facts: who signed it, when, on what documents and assumptions, and who may rely on it. Opinion practice treats those facts as the whole value of the document: a closing opinion "speaks as of its date" and may be relied on only by its addressee and anyone "expressly authorized to rely"13.

What changed in 2025 and 2026 is that regulators in Dubai, the EU and the US wrote the same four facts into rules and templates. An opinion that cannot show its signer, its date, its scope and its current status is now the odd document in the file. This is general information, not legal advice, and it speaks as of 16 October 2026. The corridor regulation tracker lists each dated event with its source.

Regulators now say who may sign, and in what form

VARA's Guidance on the Virtual Asset Issuance Rulebook (9 April 2026) says a legal opinion given to VARA on an asset-referenced virtual asset issuance must be prepared and signed by a duly registered practising lawyer, not the issuer's in-house counsel, and must be dated, signed and issued on the firm's letterhead1. The guidance runs to six headed sections on the opinion: authorship and qualification, independence and objectivity, scope, assumptions, reliance and limitations, form and submission, and ongoing validity and amendments. On assumptions it is specific: the opinion "must clearly articulate any assumptions, limitations, and sources of information on which the lawyer has relied", and must say which facts came from the issuer1.

The legal opinion must be prepared and signed by a duly registered practising lawyer.VARA, Guidance on the Virtual Asset Issuance Rulebook, 9 April 2026, item 32

The scope of that rule is narrow, and the narrowness matters. The guidance is indicative by its own introduction, not a substitute for independent legal advice, and it glosses two rules in Annex 2 of the Issuance Rulebook (19 May 2025), which covers asset-referenced virtual assets: Rule III.B.2 says a legal opinion may be required, and Rule III.C.4 requires one from issuers holding reserve assets2. No other rule in the Issuance Rulebook, the Broker-Dealer Services Rulebook or the 2023 Regulations asks for a legal opinion, and the package a Licensed Distributor files for a Category 2 issuance carries none3. On LEXI, co-signers are licensed lawyers by design; that is LEXI's choice, and LEXI is not licensed or endorsed by VARA.

The UAE also gained a federal layer on 1 January 2026, when the SCA became the Capital Market Authority under Federal Decree-Laws 32 and 33 of 2025, with virtual assets inside the federal perimeter; the one-year status-adjustment period under Article 83 of Decree-Law 33 runs to 1 January 2027 and may be extended4. For an opinion that is a scope question: which regulator's rules it covers, and as of which date. Our briefing on the UAE CMA has the detail, and the VARA compliance page covers licensing by activity in Dubai.

Regulators now expect opinions to stay current

The same VARA guidance makes the issuer responsible for keeping an Annex 2 opinion current throughout the review, and says that where there are material changes in the structure, rights or regulatory treatment of the asset, "the lawyer is obliged to issue a revised or supplemental opinion to VARA"1. That is a regulator writing an expiry condition into an opinion.

The stronger rule for reliers needs no asset-referenced caveat. Part IV of VARA's Broker-Dealer Services Rulebook requires a Licensed Distributor to ensure that its due diligence on an issuer and its asset "remains up-to-date and accurate at all times" while it distributes (Rule IV.E.1), to suspend distribution the moment it knows or suspects the asset "no longer complies" (Rule IV.E.2), and on any material change to redo the diligence and resubmit it to VARA, covering every change since the last submission (Rule IV.E.3)3. Neither rule mentions a legal opinion, a credential or LEXI. A distributor under those rules needs every document in its file to carry a date and a way to tell whether it still holds. A co-signed opinion with an as-of date, an expiry and a status is evidence that distributor can file and re-check, not something VARA asks for.

The EU wrote a template, and launches still wait on opinions

On 10 December 2024 the three European supervisory authorities published Joint Guidelines JC 2024 28 under Article 97 of MiCA, applying from 12 May 2025. They carry three instruments: a template for the explanation an offeror of an ordinary crypto-asset attaches to its white paper (Annex A), a template for the legal opinion that accompanies an asset-referenced token application (Annex B), and a standardised classification test (Annex C)5. Tokens under Title II need an explanation, not an opinion. The legal-opinion template exists for asset-referenced tokens.

Annex B is a field list. An EU asset-referenced token opinion states the date on which it is issued; who issues it, with evidence of the ability to practise; a declaration of conflicts of interest; the dated final white paper, attached; the Member States concerned; and the applicable law5. It has no expiry field and no field for who may rely on it. The ESA template may be completed by an in-house or external legal adviser who can evidence the ability to practise. LEXI goes further: on LEXI the co-signer is a licensed lawyer.

The supervisors' own 2026 reports describe what the template did and did not solve. The EBA's response to the Commission's MiCA review (24 September 2026) reports 39 electronic money tokens issued under MiCA and zero asset-referenced tokens authorised as at 1 September 2026, and says the launch of tokenised investment products may be delayed "due to protracted processes involving legal opinions and supervisory dialogues"6. ESMA's response (30 September 2026) records that "1 July 2026 marked the end of the MiCA transitional period", says "classification remains one of the most important issues under MiCA", and proposes binding ESMA classification opinions7. A relier reading an EU opinion now has two facts to pin: the date of the opinion and the register status of its counterparty on that date. On LEXI, the EU (MiCA) is V1, next up.

The US re-set the baseline on 17 March 2026

On 17 March 2026 the SEC issued an interpretation (Release No. 33-11412; 34-105020, effective 23 March 2026) that sorts crypto assets into five categories by their characteristics, uses and functions: digital commodities, digital collectibles, digital tools, stablecoins and digital securities. It says the first three "are not themselves securities", adds that "a non-security crypto asset can be offered and sold subject to an investment contract, which is a security", and supersedes the SEC staff's 2019 framework for investment-contract analysis8. Those are the SEC's words; the second sentence is the one an opinion has to work through.

The effect on an opinion is the date. A US securities opinion written before 17 March 2026 rests on a framework that no longer applies, and a relier reading one today needs its as-of date first. The baseline is still moving: Regulation Crypto Assets, published in the Federal Register on 21 August 2026, proposes two exemptions from Securities Act registration and a conditional carve-out from the term "investment contract", with comments due on or before 20 October 2026. It is a proposal, not a rule in force9. US coverage on LEXI is on the roadmap.

Enforcement is dated and public

None of the notices below is about legal opinions. They are here because each is a dated, public record, which is what a relier's diligence file is made of.

  • Dubai. VARA's regulatory notices page lists four Notices of Fines in the summer of 2026: CoinMENA FZE (22 June 2026), MX Global LTD ("MEXC") (22 June 2026), Peken Global Limited ("Kucoin") (24 June 2026) and Shelbit General Trading L.L.C (24 July 2026)10. On 6 October 2026 VARA issued a circular titled Reserve Assets Audit Report, on the independent audit of reserve assets; it concerns client-asset audits and does not mention legal opinions11.
  • India. FIU-IND publishes its compliance orders. Against virtual digital asset service providers they are: Peken Global Limited (KuCoin), 22 March 2024, a penalty of Rs 34,50,000; Binance, 19 June 2024, Rs 18,82,00,000; Bybit Fintech Limited, 31 January 2025, Rs 9,27,00,000; and Coinbase India Private Limited, 6 March 2025, a warning with directions and no monetary penalty. No order against a virtual digital asset service provider dated 2026 was listed as of 16 October 202612. On LEXI, India (FIU-IND) is V1, next up.

A compliance officer at an exchange or a Licensed Distributor can cite every item above by title and date. The opinion in the same file should be citable the same way: by signer, date, scope and status.

What a PDF cannot carry

Opinion practice limits an opinion to its date and its addressees13. A PDF carries both limits as words and offers no way to check either. The exchange that receives it cannot verify the signature on its own, cannot tell whether the opinion was later withdrawn, cannot tell whether the version in the data room is the version the lawyer signed, and cannot tell whether its own entity is authorised to rely. Some listing teams require an opinion in writing; most run an internal legal review and keep a file. Our briefing on how exchanges verify a token legal opinion records what each listing team publishes.

Some opinion sellers advertise acceptance rates with exchanges. Nobody outside the seller can check them, because the opinion is a PDF with no public record. A credential's status, scope and reliance list are checkable by anyone, free.

The table sets the three sources side by side. Each column describes what that source asks of an opinion; none is a rule applied to LEXI, and the VARA column reaches only asset-referenced issuances.

What regulators and opinion practice ask of a legal opinion · checked at source on
Fact about the opinionVARA guidance, 9 April 2026 (Annex 2, asset-referenced)ESA template, JC 2024 28 (Annex B, asset-referenced tokens)ABA Core Opinion Principles, 2017
Who signedA duly registered practising lawyer, not in-house counselAn in-house or external legal adviser, with evidence of the ability to practiseThe opinion giver, named in the letter
The dateDated, signed, on the firm's letterheadThe date on which the opinion is issuedSpeaks as of its date
The documents and assumptionsAssumptions, limitations and sources stated; facts from the issuer identifiedThe dated final white paper, attached; applicable law; Member StatesStated facts and assumptions
After a material changeA revised or supplemental opinionNot addressed in the templateNo obligation to update
Who may relyGiven to VARANot addressed in the templateThe addressee and anyone expressly authorised

Fig. 01 Three sources, one shape: a signer, a date, a document set and a limit on reliance. Sources 1, 5 and 13.

What a credential carries

A LEXI credential takes the four facts the rules above keep asking for and records them where the parties the opinion names can read them. The licensed lawyer still writes and signs the opinion after their own diligence; the LEXI engine prepares a first pass as work product, never the opinion, and no AI signs anything. The co-signed opinion is then committed on Base as a credential: the signatory and firm ID, the jurisdiction and governing law, the as-of date and expiry, a status of Live, Expired or Revoked, the reliance mode, and a scope hash and an opinion hash that bind the exact scope text and opinion document. The scope text, assumptions and reservations and permitted-use terms sit off-chain in public. The opinion body stays off-chain, encrypted, open to the named reliers against an on-chain reliance record. A new opinion means a new credential, never an edit to the old one.

The two sets of facts rhyme: the signer, the date, the stated assumptions and the duty to revise on the VARA side; the issue date, the evidence of ability to practise and the attached white paper on the EU side; the date and the authorised reliers in opinion practice. A credential adds what none of them carries: an expiry, a current status and a named-relier list readable by anyone. The relier's check is three steps.

  1. Status is Live, not Expired or Revoked.

    As-of date, expiry and revocation are on-chain.Does it still speak as of a date I accept?

  2. The scope and opinion hashes match the documents you hold.

    Hash the PDF and the scope text and compare them with the on-chain commitments.Is this the document the lawyer signed?

  3. Your entity is a named relier and has accepted the reliance terms.

    The credential names who may rely on it; the reliance record shows you accepted the terms.Am I expressly authorised to rely?

Reading the public on-chain metadata is free. Reliance access, which opens the gated body and writes the reliance record, is a fixed USDC fee; price points publish at mainnet. The page for exchanges, VASPs and Licensed Distributors puts the check in a compliance file's terms.

Coinbase Verifications, on Base

Their README says the attestations should not be relied upon by you or any third party for any legal, compliance, or contractual purpose14.

A LEXI credential

Names the parties that may rely on it, carries a licensed lawyer's signature, and expires.

Fig. 02 The category contrast. An attestation that disclaims reliance and a credential built for it answer different questions.

What it is not

A credential is not a licence, a registration, or an approval by any regulator. It is not a filing with VARA, the CMA, an EU authority, the SEC or FIU-IND, and it does not satisfy Annex 2 or any other rule on its own; the lawyer's signed opinion does whatever work a regulator asks of it, in the form that regulator prescribes. LEXI is not licensed or endorsed by VARA. A credential is not an identity or KYC attestation and carries no data about a protocol's end users. No risk score is written on-chain. LEXI is not a law firm and does not give legal advice.

Where LEXI stands

V0 runs end to end on Base Sepolia (testnet), confirmed by the founding team on 4 August 2026: documentation in, engine first pass, co-signature flow, credential minted, with VARA (Dubai) as the base jurisdiction. Nothing is live on mainnet; mainnet is targeted post-audit, Q4 2026, VARA first, and contracts are audited before mainnet. V1, next up, is a refreshed LEXI Agent built for long-horizon diligence across many rulebooks, plus new jurisdictions starting with the EU (MiCA) and India (FIU-IND). V2, after V1, adds agent connectors and a standalone verification API. US coverage is on the roadmap. The dated record is in the build log; the key facts for diligence are on the about page.

A LEXI credential is a co-signed legal opinion committed on-chain. It is not a licence, a registration, or an approval by any regulator. LEXI is not licensed or endorsed by VARA.

Questions

What makes a legal opinion verifiable?

A legal opinion is verifiable when the parties it names can check its signer, its date, the exact documents it covers and its current status without asking the firm that wrote it. A LEXI credential records those facts on Base: the signatory and firm ID, the as-of date and expiry, the scope and opinion hashes, a status of Live, Expired or Revoked, and the named reliers. V0 runs on Base Sepolia (testnet); nothing is live on mainnet.

Does VARA require a lawyer-signed opinion for every token?

No. The VARA rules that name a signer sit in Annex 2 of the Virtual Asset Issuance Rulebook and concern asset-referenced virtual assets: Rule III.B.2 says an opinion may be required, and Rule III.C.4 requires one from issuers holding reserve assets. VARA's Guidance of 9 April 2026 says such an opinion must be prepared and signed by a duly registered practising lawyer, not the issuer's in-house counsel. The package a Licensed Distributor files for a Category 2 issuance carries no legal-opinion requirement. LEXI's licensed-lawyer rule is LEXI's own design choice, and LEXI is not licensed or endorsed by VARA.

Is a LEXI credential a regulator approval?

No. A LEXI credential is a co-signed legal opinion committed on-chain. It is not a licence, a registration, or an approval by any regulator, and it is not a filing with VARA, the CMA, an EU authority, the SEC or FIU-IND. LEXI is not a law firm and does not give legal advice.

Sources

Sources, checked at source on 2026-10-16. Primary texts only; dates are the documents' own.

  1. VARA, Guidance on the Virtual Asset Issuance Rulebook, 9 April 2026, items 32 and 34 (indicative guidance under Regulation I.B.4). rulebooks.vara.ae (opens in a new tab)
  2. VARA, Virtual Asset Issuance Rulebook, 19 May 2025 (site: effective 19 June 2025), Annex 2 Rules III.B.2 and III.C.4; Part I.E (Category 2 and the Licensed Distributor). rulebooks.vara.ae (opens in a new tab)
  3. VARA, Broker-Dealer Services Rulebook, 19 May 2025 (site: effective 19 June 2025), Part IV Licensed Distribution Services Rules: Rule IV.D.1 (the submission package) and Rules IV.E.1 to IV.E.3 (ongoing obligations). rulebooks.vara.ae (opens in a new tab) · PDF (opens in a new tab)
  4. UAE Capital Market Authority, The new CMA law (Federal Decree-Law No. 32 of 2025) and Federal Decree-Law No. 33 of 2025 on the Regulation of the Capital Market, both in force 1 January 2026; Article 83 of Decree-Law 33 (status adjustment). uaecma.gov.ae (opens in a new tab) · Decree-Law 33 (PDF) (opens in a new tab)
  5. EBA, EIOPA and ESMA, Joint Guidelines on templates for explanations and legal opinions, and the standardised test for the classification of crypto-assets under MiCA (JC 2024 28), 10 December 2024, applying from 12 May 2025; Annex B. esma.europa.eu (opens in a new tab) · EBA press release, 10 December 2024 (opens in a new tab)
  6. EBA, EBA response to the EC targeted consultation on the review of MiCA, 24 September 2026 (the counts and the quoted passage are in the response document; the press release carries the counts). Response (PDF) (opens in a new tab) · EBA press release, 24 September 2026 (opens in a new tab)
  7. ESMA, Response to the European Commission's consultation on the MiCA review (ESMA75-113276571-1721), 30 September 2026. esma.europa.eu (opens in a new tab)
  8. US Securities and Exchange Commission, Application of the Federal Securities Laws to Certain Types of Crypto Assets and Certain Transactions Involving Crypto Assets, Release Nos. 33-11412 and 34-105020, dated 17 March 2026, effective 23 March 2026 (91 FR 13714). sec.gov (opens in a new tab) · federalregister.gov (opens in a new tab)
  9. US Securities and Exchange Commission, Regulation Crypto Assets (proposed rule), Release Nos. 33-11434 and 34-106150, File No. S7-2026-27, issued 18 August 2026 and published in the Federal Register 21 August 2026; comments due on or before 20 October 2026. sec.gov (opens in a new tab) · federalregister.gov (opens in a new tab)
  10. VARA, Regulatory notices: "VARA Notice of Fines – CoinMENA FZE" (22 June 2026); "VARA Notice of Fines – MX Global LTD ('MEXC')" (22 June 2026); "VARA Notice of Fines – Peken Global Limited ('Kucoin')" (24 June 2026); "VARA Notice of Fines – Shelbit General Trading L.L.C" (24 July 2026). Titles and dates as listed; amounts are not on the listing page. vara.ae (opens in a new tab)
  11. VARA, Circular: Reserve Assets Audit Report, 6 October 2026 (listed on vara.ae as "Circular: regarding Reserve Assets Audit Report"). PDF (opens in a new tab) · vara.ae listing (opens in a new tab)
  12. FIU-IND, Compliance orders index, read 16 October 2026, and the orders in original: No. 08/DIR/FIU-IND/2024 (Peken Global Limited, 22 March 2024), No. 10/DIR/FIU-IND/2024 (Binance, 19 June 2024), No. 15/DIR/FIU-IND/2024 (Bybit Fintech Limited, 31 January 2025) and No. 16/DIR/FIU-IND/2024 (Coinbase India Private Limited, 6 March 2025). Dates are the orders' own; the index page shows 2024 for the last two. fiuindia.gov.in (opens in a new tab) · KuCoin order (opens in a new tab) · Binance order (opens in a new tab) · Bybit order (opens in a new tab) · Coinbase India order (opens in a new tab)
  13. American Bar Association, Business Law Section, Core Opinion Principles, approved 28 March and 7 April 2017, sections 4.1 and 4.2. scbar.org (opens in a new tab)
  14. Coinbase, Verifications repository README (read 16 October 2026). github.com (opens in a new tab)
This briefing is educational commentary, not legal advice, and it speaks as of its published date. For questions about your own structure, obtain advice from licensed counsel in the relevant jurisdictions.

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