Wallet drainer-protection scan: enumerates every live token approval (ERC-20, ERC-721, ERC-1155) your wallet has granted across major EVM chains, risk-ranks each spender (malicious flags, unverified contracts, unlimited allowances, EOA spenders), and returns a prioritized revocation action list. Deterministic security scan.

Citation-verified crypto wallet tax review: submit wallet addresses + jurisdiction, get a professional report grounded in primary tax law (statutes, rulings, case law) with machine-verified citations a CPA can check and sign. Law-synthesis layer, not a cost-basis calculator. Covers US, UK, Germany, India, Canada, Australia, Japan, Brazil, Singapore.

On-chain wallet investigation: resolve a wallet to its identity (ENS, public labels), trace its funding path to origin, surface top counterparties with entity labels, find sibling wallets funded by the same source, and screen for sanction/phishing/mixer risk. Every finding carries an explorer evidence link.

Whale-watch: a standing 30-day watch on one EVM wallet. Sweeps every 15 minutes across 6 chains; alerts the moment a transfer at or above your USD threshold moves in or out — delivered to your webhook and readable any time via the free status endpoint with your read token. Fully anonymous: no account, no email, the returned credentials are all that exists.

529 withdrawal & rollover checker — is THIS withdrawal qualified? K-12 (OBBBA $20k cap from 2026 + expanded categories), postsecondary credentialing, SECURE 2.0 Roth rollovers (15-yr/5-yr/earned-income/$35k gates computed), student-loan cap, non-qualified tax + 10% penalty math with exception routing — plus the California non-conformity traps (K-12, credentialing and 529→Roth are ALL CA-taxable + 2.5% despite being federal-tax-free). Deterministic, citation-pinned, no LLM.

Missed AOTC recovery — did you leave up to $2,500/year of education credits unclaimed? Per-year screen across the OPEN 1040-X amendment window (TY2023–2025): exact §25A credit math (100% of first $2k + 25% of next $2k), MAGI phaseouts, 4-year/half-time/MFS eligibility gates, 40% refundable portion (pays even at $0 tax), 529-coordination and LLC-vs-AOTC traps. Deterministic, statute-cited, no LLM.

Compare tax by country, income tax rates, corporate tax, capital gains tax side by side. Worldwide guide ranking 2-3 jurisdictions for relocation, corporate setup, or investment structuring across income, corporate, and capital-gains regimes. Tax intelligence, not advice.

Income tax rates by country, corporate tax, capital gains tax, tax residency rules, crypto tax treatment for any jurisdiction. Worldwide guide giving a full tax overview of any country by scenario. Tax intelligence, not advice.

Crypto tax by country, capital gains tax on crypto, DeFi tax, staking tax, NFT tax, CARF reporting obligations. Worldwide guide on how crypto is taxed by jurisdiction and activity. Tax intelligence, not advice.

Expat tax obligations, FBAR, FATCA, FEIE foreign earned income exclusion, non-dom rules, exit tax for citizens living abroad. Worldwide guide on cross-border filing by nationality and destination. Tax intelligence, not advice.

Digital nomad tax, territorial-tax countries, 183-day residency rule, tax residency by jurisdiction. Worldwide guide mapping zero/low-tax nomad destinations, where remote income is taxed, and the expat obligations that follow. Tax intelligence, not advice.

US state income-tax answers grounded in the actual state code with machine-verified citations a CPA can check. California (R&TC/FTB/OTA, static two-era conformity, NOL suspension) and New York (Tax Law/20 NYCRR/DTF/Tribunal, rolling conformity + OBBBA decoupling, convenience rule, statutory residency, resident-credit trap). Citation-locked state tax intelligence, not advice. More states as corpora ship.

Tax treaty lookup, withholding tax rates, double-taxation relief, residency tiebreaker rules, MLI modifications for any country pair. Worldwide guide returning treaty outcomes by transaction type. Tax intelligence, not advice.

VAT/GST rates, sales tax, VAT registration thresholds, digital-services tax, OSS/IOSS compliance by country. Worldwide guide returning indirect-tax rates and thresholds across global jurisdictions for any sector or business type. Tax intelligence, not advice.