Your Numbers.

Verified.

Soteris is the licensed assurance firm for digital-asset operations. No hourly billing, no learning on your dime, and a CPA who already speaks crypto.

Learn More

Soteris is the crypto-native assurance firm for founders, funds, and the attorneys who advise them.

Reviewed financials in a week. Flat pricing. No scope creep.

Behind every engagement is an assurance engine we built ourselves. The agents prepare the work across multiple service lines, from compilation through Proof of Reserves.

Deterministic engines run the math any peer reviewer can reproduce. Judgment agents prepare the workpapers our CPAs discern. Preparation is automated; the conclusion is not.

See Our Services

Licensed CPA Firm

SSARS & SSAE Compliant

Big Four Methodology

Incubated by Darien Advisors

Licensed CPA Firm

SSARS & SSAE Compliant

Big Four Methodology

Incubated by Darien Advisors

Licensed CPA Firm

SSARS & SSAE Compliant

Big Four Methodology

Incubated by Darien Advisors

Licensed CPA Firm

SSARS & SSAE Compliant

Big Four Methodology

Incubated by Darien Advisors

Licensed CPA Firm

SSARS & SSAE Compliant

Big Four Methodology

Incubated by Darien Advisors

Licensed CPA Firm

SSARS & SSAE Compliant

Big Four Methodology

Incubated by Darien Advisors

~/engine — eng-2026-q1-iso-2401 · stablecoin · at-c 215Soteris Engine

$ soteris run --pipeline --tail

leadscoping in progress · awaiting handshake

g1_approvalSQMS 1 cleared · independence ok

proposal_sentletter signed · 04.18.26

ai_intakePBC complete · variance ok

ai_analysis7 of 7 procedures · complete

clarification_requesteddisposed · accepted

report_readyworkpaper complete

releasedreleased to client

archivedcloseout review approved

CPA gatesindependenceaccounting-policyanalytical-reviewassertion-verify

Same pipeline for

Proof of ReservesCompilationFinancial ReviewsIncome Attestation+ 3 more

Every on-chain balance is pinned to a block height any peer reviewer can re-query.
Workpaper language is regenerated when it violates AT-C 215.A27, not flagged on a checklist.
Our CPAs control every release. No deliverable leaves the engine without an explicit sign-off.
Every service line runs through the same engine with the same controls and audit trail.

The Problem

Your CPA has never heard of ASU 2023-08.

Your offering is stuck because the financials aren't ready. Your attorney is calling around looking for someone who can move. The platform compliance team is waiting. Your investors are waiting.

The Solution

Deliver in days.

We built Soteris because the gap between what crypto companies need and what the accounting industry provides is a canyon. Generalist CPAs don't understand your business. Big Four firms don't want it.

We're different because we started different. Crypto-native from day one. We don't learn on your dime. We verify on-chain, deliver in days, and keep the work built around your actual raise timeline.

Everything your next raise,
attestation, or regulatory deadline requires.

~/soteris/servicesSoteris

Crypto Launch Kit

Your minimum viable financial infrastructure.

The fastest path from messy books to investor-ready. We take your trial balance, map every wallet and custodian across every chain, run a token classification and ASC 350-60 quick-assessment, and hand you back GAAP-ready financials plus a 90-day roadmap to your first review.

→GAAP-ready financial statements
→Wallet and custodian mapping, every chain
→Token classification quick-assessment
→ASC 350-60 scoping memo
→90-day upgrade roadmap

Learn More

FIG. 1 · LAUNCH KITVerified ✓

Starting at

$5,000

Terms

Flat fee

Turnaround

5 business days

~/soteris/institutionalSoteris

Income Attestation

Prove your on-chain income is real.

Independent verification of income from staking, protocol fees, DeFi yield, trading, and token sales. We trace it at the transaction level, across protocols, and issue a signed CPA report your LPs, governance, and regulators can rely on. Recurring quarterly retainers keep your reporting cadence tight.

Starting at $10,000Learn More

Asset Attestation

Independently verify what you hold.

We independently confirm what you hold, where it's held, and what it's worth as of a specific date, under SSAE standards. On-chain balances, custodian confirmation letters, and fair value methodology, all in one signed report.

Starting at $10,000Learn More

AT-C 215

Proof of Reserves

Built for auditor and regulator review.

Reserve-to-liability assurance for stablecoin issuers, exchanges, custodians, and tokenization platforms. AT-C 215 agreed-upon procedures signed by a licensed CPA from our firm, with AT-C 205 examination on the readiness path. Snapshot timestamp, on-chain evidence, and liability tie-out, all standing up to your auditor and your regulator.

ScopedLearn More

Three steps. No ambiguity.

Scope

Tell us what you need. We’ll tell you exactly what is in scope, what we need from you, and what the next milestone requires.

Execute

We deliver reviewed financials, attestations, or advisory in days, not weeks. CPAs maintain full control.

Grow

Every engagement builds toward your next milestone. Compilation → Review → Attestation → Audit. One firm, the whole journey.

Built for your world.

~/soteris/customersSoteris

Founders

You're 60 days from a raise and your books are still in a sheet.

Launch Kit gets you GAAP-ready in a week, then stays through the review your lead investor will ask for.

VCs & Funds

Your portfolio needs one financial partner before diligence starts.

We standardize crypto financials across companies, so every founder shows up IC-ready.

Attorneys

Your client needs a crypto-native CPA and the filing clock is running.

Send them to the firm that already speaks tokens, wallets, and Reg CF pressure.

Platforms

Your issuers need reviewed financials before they can list and raise.

Crypto-native workpapers, flat pricing, and listing-queue support move teams to signed reports.

Crypto-native from day one.

We didn’t bolt crypto onto a generalist practice. We didn’t bolt accounting onto a tech tool. We built one firm that does both. Licensed CPAs running on an assurance engine we wrote ourselves, purpose-built for digital assets.

Chain-agnostic by design

Bitcoin, Ethereum and every EVM L2, Solana, Bittensor, Cosmos, and nascent chains. If your treasury holds it, we verify it. New chain in your stack? We add it to the engine.

Built around how crypto actually works

Token classification that holds up to scrutiny. ASC 350-60 fair value measurement built into the engine, not bolted on top. DeFi positions, staking rewards, LP tokens, multi-sig custody, smart contract interactions. All native, none of it an exception.

The Soteris engine

Our CPAs run every engagement. They scope it with you, walk you through the findings, answer the questions your lead investor is going to ask, and sign the report. Behind them, a growing set of purpose-built agents handles the mechanical work that used to take a junior associate a week, and a smaller set of judgment-supporting agents prepares the conclusions our CPAs actually sign.

We don't count agents on the homepage. Each engagement pulls the agents it needs, and we add new ones whenever a service line earns them. The principle is the same in every direction: AI prepares, humans conclude. The work that needs to be reproducible for a peer reviewer is deterministic and versioned. The work that needs professional judgment routes to one of our CPAs, with their name on it.

~/engine — eng-2026-q1-ai-2401 · cpa release · firm gateSoteris Engine

$ soteris route --prepared-work --cpa-gate

intake_bundletrial balance · wallets · statements

evidence_pinblock heights · source files versioned

procedure_runreproducible procedures · peer rerunnable

finding_routejudgment items · CPA queue

workpaper_draftprepared · not concluded

cpa_dispositionhuman conclusion required

report_releaseblocked until CPA signs

CPA gatesevidence-pinnedprocedure-versionjudgment-routecpa-release

~/soteris/capabilitiesSoteris Engine

Financial & On-Chain Evidence

ASC 350-60-45-1

Trial balance and GL parsing, account mapping with ASC 350-60-45-1 segregation, wallet mapping with ownership proofs, on-chain balance reconciliation at pinned block heights, reserve-to-liability tie-out, exchange and custodian statement reconciliation, and exception detection.

~/engine — eng-2026-q1-por-0512 · fp-evidenceSoteris Engine

$ soteris run --capability fp-evidence

wallet-manifest14 addresses · resolved

block-height-pinETH 19_482_001 · BTC 825_410

asc-350-60-segregate12 accounts · ok

on-chain-recon0.0202 ETH delta · flagged

exception-routecustodian variance · cpa

CPA gateswallet-proofblock-pinrecon-cleanexceptions

The CPA holds the pen

AI prepares. Humans conclude. Soteris' licensed CPAs own your relationship, review every finding, approve every workpaper, sign every opinion, and control every release to the client. That's not a feature. That's the firm.

Get started

Ready to move?

The question isn't whether you need us.The question is why you'd consider using somebody else.

PLEASE VIEW ON DESKTOP

Your Numbers.

Verified.

Your CPA has never heard of ASU 2023-08.

Deliver in days.

Everything your next raise,attestation, or regulatory deadline requires.

Crypto Launch Kit

Income Attestation

Asset Attestation

Proof of Reserves

Three steps. No ambiguity.

Scope

Execute

Grow

Built for your world.

Crypto-native from day one.

Financial & On-Chain Evidence

Get started

Ready to move?

Everything your next raise,
attestation, or regulatory deadline requires.