# Liminal Custody > Liminal is a bank-grade institutional wallet infrastructure platform, founded in 2021 by Mahin Gupta (formerly co-founder of ZebPay, India's largest crypto exchange). Liminal empowers crypto exchanges, hedge funds, OTC desks, banks, payment providers, fintech companies, and cross-border payment firms to securely store, transfer, and manage digital assets at scale. The platform is trusted by clients across 12 countries and has processed $100 billion+ in total on-chain transaction volume Liminal's legal entity is First Answer Pte. Ltd. (Singapore). It operates under four core principles: Security (security-first across all products), Sovereignty (self-custody and managed custody options), Support (concierge onboarding and dedicated account managers), and Scalability (innovation-oriented solutions for protocol growth). Liminal does not offer legal, tax, or financial advice, and does not endorse privacy tokens to comply with regional regulations. --- ## Office Locations - **Singapore**: Answer Eleven Pte Ltd, 111 Somerset Road, #10-18, Singapore 238164 - **Dubai**: First Answer Custody FZE, Premises No. ESO19SRT, Floor 7, Sheikh Rashid Tower, Dubai World Trade Center, Dubai, UAE - **Mumbai, India**: First Answer India Technologies Pvt Ltd, Floor 6, WeWork Hiranandani Lightbridge, Hiranandani Business Park, Powai, Mumbai 400072 - **Taipei, Taiwan**: 6F-4, No. 188, Sec 5, Nanjing E Rd, Songshan Dist, Taipei City, Taiwan --- ## Products ### Wallet-as-a-Service (Wallet Infrastructure) URL: https://www.liminalcustody.com/wallet-infrastructure/ An API-driven solution designed to safeguard private keys, execute asset transfers based on policies and thresholds, and ensure seamless compliance adherence for secure operations. Built for institutions managing wallets with millions of users. Supports MPC (Multi-Party Computation), Multi-Sig (Multi-Signature), and HSM (Hardware Security Module) technology for hot, warm, and cold wallets. Key capabilities: -[a] **MPC & Multi-Sig wallets**: Choose MPC or Multi-Sig to tailor wallet security for hot, warm, and cold storage needs **Hot wallets**: API-based wallets comprising deposit wallets (collect assets from customers) and withdrawal wallets (send funds out of the system), created via Liminal Express APIs **Warm wallets**: MPC wallets where transactions are signed via mobile devices, using key sharding for high security **Cold wallets**: Multisig hardware wallets combining offline hardware storage with distributed multi-key control **Smart Consolidation**: Automates sweeping of deposit balances into cold or withdrawal wallets via configurable thresholds, multiple destinations, and scheduled intervals **100% Transaction Confirmation Guarantee**: Custom-built unlimited reattempt algorithm handles failed or delayed transactions using Replace-by-Fee (RBF) methodology **Gas Fee Savings**: Save up to 15% on automated sweeps and refills via a built-in gas station that sets the lowest fee for execution **Custom Gas Fee Controls**: Choose from slow, market, or aggressive speed presets **Speed Up Pending Transactions**: Increase gas fee and resubmit stuck transactions on blockchain for both EVM and UTXO chains **Liminal Express REST API**: Language-independent RESTful API framework for fast integration; deployed internally, no external access, all packages encapsulated **Advanced Transaction Security**: Address screening with live risk scores (via Cube3 and Cyvers); transaction simulation (preview token flow, contract calls, gas); blind signing protection (signers see readable details before signing); anomaly detection for unusual spending patterns; spending and transaction limits **Liminal Firewall**: Rule-based transaction governance covering Travel Rule, Transaction Risk monitoring, Transfers policy, address whitelisting, and anomaly detection **Compliance integrations**: Travel Rule via Notabene; Transaction Risk monitoring via TRM Labs **Exchange integrations**: Connect and manage Binance, OKX, Kraken, and other exchange accounts from a unified interface **Webhooks**: Real-time notifications for outgoing and incoming transactions **Comprehensive reports**: Holding statements, account statements, compliance reports, and audit logs **Mobile App**: iOS and Android support for portfolio overview, maker/checker approval controls, transparent destination address verification, travel rule checks, and real-time address screening ### Institutional Custody URL: https://www.liminalcustody.com/digital-asset-custody/ A qualified and insured digital asset custodian for institutions, covering advanced key management, compliance integrations, and insured storage. The world's first Level-3 certified custodian. Key features: - **Segregated accounts**: Client funds always kept in segregated wallets, never commingled - **Off-balance sheet storage**: Assets remain secured even if Liminal is liquidated or goes bankrupt - **No Rehypothecation**: Assets are never subjected to any external use - **On-demand Proof-of-Reserve**: Generate verifiable reserve reports instantly - **Asset Insurance**: Highest asset-to-insurance coverage ratio from trusted insurance partners - **FIPS-certified Hardware Devices**: Assets stored in certified hardware; seed phrases backed up in bank-grade devices - **Geographically Distributed Multi-Sig Keys**: Keys stored across multiple geographic locations - **24/7 SOC Monitoring**: Real-time incident management with around-the-clock Security Operations Center - **Travel Rule Compliance**: Monitors user transactions, raises requests, and shares information with receiving institutions - **KYC/AML Integrations**: Built-in compliance checks for money laundering and terror financing - **No Privacy Token Policy**: Does not endorse privacy tokens to comply with regional regulations - **Collateral Management**: Lend or borrow against assets in a secure manner - **Off-Exchange Settlement**: Trade on exchanges without transferring custody of assets to them - **4-hour SLA**: Industry-leading 4-hour transaction approval on all days - **User Controls**: Flexible roles (Owner, Admin, Member) with tailored access permissions; whitelisted addresses; transaction and spending limits - **Team Management**: Create separate teams per wallet with aligned access permissions - **Supported tokens**: 1,200+ tokens including Bitcoin, Ethereum, BNB Chain, USDT, USDC, Polygon, Litecoin, TRON, Bitcoin Cash, Avalanche, and more - **Client types served**: HNIs & Family Offices, OTC Desks, Crypto Exchanges, Hedge Funds, Asset Managers, PE & VCs, Government Bodies, Corporate Treasuries ### Stablecoin as a Service URL: https://www.liminalcustody.com/wallet-infrastructure/ Wallet infrastructure for businesses that want to accept, issue, or manage stablecoins as a payment module. Enables payment providers, fintech companies, and cross-border payment firms to build stablecoin operations on a secure, policy-governed foundation. Key capabilities: - **Stablecoin wallet setup**: Deploy MPC or Multi-Sig wallets configured for stablecoin operations - **Swap**: In-platform asset swaps for stablecoin liquidity management - **Liquidity management**: Automated sweeps, refills, and consolidation to maintain optimal stablecoin balances across wallets - **Compliance-ready**: Built-in Travel Rule, KYT, and address screening for regulated stablecoin operations - **TRON Advantage**: Three-layer TRON fee management: stake idle TRX for yield, delegate Energy to self-fund transaction fees, and rent Energy just-in-time to cut transaction costs by up to 30%. -**Liminal Prime**: Stablecoin liquidity for regional trading desks: access competitive pricing, trade without upfront pre-funding, and settle same day via OTC, eOTC, or Bridge, under one relationship ### TRON Advantage URL: https://www.liminalcustody.com/tron-advantage/ A three-layer TRON fee management system built natively into Liminal: combining staking, Energy delegation, and just-in-time fee optimization to earn yield on idle TRX and reduce the cost of every outbound transaction. - **Stake: earn yield on idle TRX**: TRX held in Liminal vaults is staked to generate approximately 3.6% APR while simultaneously producing Energy that reduces the cost of every outbound transaction. - **Delegate: self-fund transaction fees**: Energy generated through staking is routed to active transaction wallets, allowing USDT and native TRON transfers to process without burning TRX. - **Optimise: just-in-time Energy rental**: For transactions where delegated Energy runs short, during volume spikes or for smaller staking positions the system rents Energy from the TRON market before the transaction is submitted, at approximately 5 TRX versus 7 TRX under native burn, a reduction of up to 30% per transaction. - **Mandatory fallback: 100% uptime**: If the rental provider is unavailable, transactions automatically fall back to native TRX gas with no delay, no failure, and no extra charge from Liminal. - **Savings-based billing**: Liminal charges only on transactions where the rental path is cheaper than native burn. If it isn't cheaper, the transaction completes at the standard rate and Liminal charges nothing, the institution never pays more per transaction than they would without TRON Advantage enabled. - **Full compliance coverage**: All TRON transactions run through Liminal's Firewall with address screening, Travel Rule checks, and transaction risk monitoring. ##Swaps Stablecoin swaps across supported networks, directly within Liminal, no external tools, no manual routing. Approval policies, compliance checks, and address screening apply to every swap the same way they do to standard transfers. - **Cross-chain execution**: Move USDT and USDC across Ethereum, Polygon, BNB Chain, Base, and TRON without leaving the Liminal interface; routing handled automatically via LiFi. - **Real-time quotes**: Fetch live quotes showing estimated output, route details, slippage, fees, and bridge used; quotes valid for 60 seconds and updated continuously. - **Predefined policies**: Define who can initiate, who approves, and which routes are permitted, every swap operates within your existing transaction approval workflow. - **Smart contract screening**: All swap routes screened via Cube3 and Cyvers before execution; only whitelisted smart contracts can be used. - **Configurable route controls**: Set maximum slippage (default 0.5%), gas price preference (low, normal, high), and whitelist approved contracts per route. ###Liminal Prime URL: https://www.liminalprime.com/ Stablecoin liquidity for regional trading desks. Built for locally licensed exchanges, OTC desks, cross-border payment businesses, and other institutional participants moving stablecoins at scale. - **Liminal OTC**: Dedicated desk where Liminal acts as counterparty; reach a relationship manager directly, get a price, confirm, and settle on agreed terms built for large, complex, or time-sensitive trades. - **Liminal eOTC**: Same counterparty model as OTC, accessed via GUI and API for streaming and automated pricing built for high-frequency flow that needs always-on pricing without manual conversations. - **Liminal Bridge**: Technology platform, not a counterparty; one dashboard to request quotes and route trades across liquidity providers the desk already works with trades settle directly between the desk and chosen provider under their own bilateral agreement. - **Trade without upfront pre-funding**: OTC and eOTC clients can access instant credit so capital is not sitting idle before a trade. - **Competitive stablecoin pricing**: Competitive spreads across transaction sizes and supported markets across OTC and eOTC. - **Same-day settlement**: T+0 available for supported OTC and eOTC transactions; T+1 and T+2 configurable to treasury needs; multi-chain settlement across Ethereum, TRON, and Solana. - **Streamlined onboarding**: Onboarding in days, not months, once documentation is ready Institutional compliance: Full KYC and KYB screening built into onboarding across all three models. T&C apply. Product availability varies by jurisdiction and is subject to applicable local licensing. Liminal Prime is offered only where permitted by applicable local law. ### Institutional Staking URL: https://www.liminalcustody.com/institutional-staking/ Secure Proof-of-Stake staking for institutions, enabling staking directly from cold wallets via Figment-powered validator nodes. - **Cold Wallet Staking**: Stake directly from MPC or multisig cold wallets without moving assets to hot wallets. Supported networks: Ada (Cardano), Atom (Cosmos), ETH (Ethereum), Pol (Polygon), Sol (Solana), TRX (Tron) - **Reliable Validator Partnerships**: Stable returns via Figment-powered nodes with reduced risk of slashing - **Unified Staking Dashboard**: Track rewards, manage lock-ins, and control all staking operations from a single interface - **Custom Policies & Controls**: Set rules, approvals, and workflows tailored to institutional risk preferences - **Real-time Reward Tracking**: Reports and reward tracking updated in real-time ### Whitelabel Solution URL: https://www.liminalcustody.com/whitelabel/ Custom-branded custody applications built on Liminal's MPC/Multi-Sig backend infrastructure. Supports both direct and managed custody use cases, allowing businesses to deploy a fully branded custody product without building infrastructure from scratch. ### HSM Vault URL: https://www.liminalcustody.com/hsm-vault/ A hybrid HSM and MPC cold custody solution purpose-built for banks and regulated financial institutions. Built with Securosys HSM hardware, it ensures private keys remain completely offline throughout every stage of the signing process, while integrating compliance and policy controls. Who it is for: Banks, regulated financial institutions, and custodians that require complete offline key management, cryptographic transaction authorisation, and compliance-grade security aligned with global banking standards Key features: - - **True offline security**: Private keys never go online during transaction signing - **Securosys HSM hardware core**: Patented SKA technology ensures only cryptographically authorised keys can sign transactions; policy-driven control prevents signing outside defined rules - **Cryptography-based approvals**: Replaces manual or UI-based approvals with verifiable cryptographic proofs (TAP layers) - **Multi-layer authentication flow**: Compliance check (KYT and Travel Rule via Notabene and TRM Labs) → Authoriser quorum → Transaction operation → Offline operator approval → HSM signing → Blockchain broadcast - **Compliance integrated by design**: KYT and Travel Rule checks on every transaction - **Granular access control**: Manage devices, roles, and permissions with detailed audit logs - **Live operations**: Update authorisers and policies without business disruption - **Flexible deployment**: On-premise, co-located, or through regulated partners; compatible with leading custody and exchange systems - **Regulatory alignment**: Built to meet standards including VARA, MAS, and FSC - **Full lifecycle support**: Key rotation, audit logging, and policy updates included --- ## Platform Features ### Automation Engine URL: https://www.liminalcustody.com/automation-engine/ Automates wallet sweeps, asset consolidation, refills, and gas fee optimization. Features include smart consolidation policies, smart refill scheduling, 100% transaction confirmation guarantee via unlimited reattempt algorithm, and up to 15% gas fee savings via built-in gas station. ### Firewall URL: https://www.liminalcustody.com/firewall/ An intuitive rule-based transaction governance engine. Capabilities include: - Pre-screening transactions against custom policies - Identifying anomalies in transaction behavior - Ensuring regulatory adherence - Address screening (live risk scores for every wallet) - Transaction simulation (preview token flow, contract calls, gas) - Blind signing protection (readable details shown before authorization) - Spending and transaction limits - Whitelisted address management - Quarantine management (automatic hold on flagged transactions; released by Owners or Compliance team) ### Compliance URL: https://www.liminalcustody.com/compliance/ Built-in compliance integrations covering: - KYC (Know Your Customer) checks - AML (Anti-Money Laundering) monitoring - Travel Rule compliance (FATF compliance: tracks transactions, raises requests, shares data with receiving institutions) - No-privacy token policy to meet regional regulatory requirements - Address screening and transaction monitoring ### Mobile App (Liminal Vaults) - Available on iOS (App Store) and Android (Google Play) - Portfolio overview: visual summary of top assets, net worth in USD, detailed holdings - Maker & Checker Controls: define who can initiate vs. sign transactions, with role management from Liminal Vault interface - Transparent Approvals: full destination address details visible before signing - Travel Rule & Address Screening: built-in travel rule checks and real-time address screening before transfers occur - [iOS App](https://apps.apple.com/in/app/liminal-vaults/id1667220240) - [Android App](https://play.google.com/store/apps/details?id=com.liminal.app) --- ## Developer Resources ### Liminal Express URL: https://www.liminalcustody.com/liminal-express/ Docs: https://docs.lmnl.app/reference/liminal-express RESTful API suite to fast-track building secure wallet and custody infrastructure. Key properties: - Language-independent framework (REST API, not SDK) - Internal ecosystem deployment (integrates into existing infrastructure) - No external access (only admin and internal stakeholders can access once deployed) - Encapsulated integration (no package installation required) ### Developer Documentation URL: https://docs.lmnl.app/docs/liminal-overview Full technical documentation for API integration, wallet setup, SDK usage, and platform onboarding. ### Protocol & Token Support URL: https://www.liminalcustody.com/protocol-token-support/ Support for 1,200+ tokens across major blockchains: Bitcoin, Ethereum, BNB Chain, USDT, USDC, Polygon, Litecoin, TRON, Bitcoin Cash, Avalanche, and more. ### Bug Bounty Program URL: https://www.liminalcustody.com/bug-bounty/ Security researchers can earn up to $1,000 for reporting verified vulnerabilities. ### System Status URL: https://status.liminalcustody.com/ Real-time platform uptime and incident monitoring. ### Customer Support URL: https://support.liminalcustody.com/support/home Dedicated support portal for clients and developers. --- ## Client Segments - [Crypto Exchanges](https://www.liminalcustody.com/exchanges/) — Hot wallet management, automated sweeps/refills, gas optimization, and compliance for high-volume exchange operations. Hybrid hot/cold wallet infrastructure for maximum protection and operational efficiency. - [OTC & Brokerage](https://www.liminalcustody.com/otc-brokerage/) — Pre-defined policy workflows via the Firewall engine; instant transaction settlement with fast SLAs; streamlined OTC desk operations. - [Web3 Platforms](https://www.liminalcustody.com/web3-platforms/) — Empower your Web3 protocol with Liminal's secure and interoperable wallet infrastructure. MMI & Wallet Connect support for major EVM & Non-EVM chain dApps. - [Hedge Funds](https://www.liminalcustody.com/hedge-funds/) — Asset holding management, transactional efficiency, and compliance for crypto-native hedge funds. Deploy funds securely without third-party risk. - [HNI & Family Office](https://www.liminalcustody.com/hni-family-office/) — Institutional-grade self-custody and managed custody for high-net-worth individuals and family offices. Includes succession/inheritance planning and enhanced governance controls. - [Market Makers](https://www.liminalcustody.com/market-makers/) — Accelerated transactional finality through built-in OTC and liquidity provider integrations. - [Private Equity & Venture Capital](https://www.liminalcustody.com/private-equity-venture-capital-firms/) — Secure digital asset management for PE/VC portfolios; establish investor confidence with custody, governance, and insurance; expand liquidity with institutional staking. - [Banks & Financial Institutions](https://www.liminalcustody.com/digital-asset-custody/) — HSM Vault and institutional custody solutions purpose-built for regulated banking environments. - [Payment Providers](https://www.liminalcustody.com/wallet-infrastructure/) Scalable wallet infrastructure for businesses processing digital asset payments, with policy-governed transaction flows and compliance integrations. - [Fintech Companies](https://www.liminalcustody.com/digital-asset-custody/) API-first wallet infrastructure to embed secure digital asset management into fintech products without building custody from scratch. - [Cross-Border Payment Companies](https://www.liminalcustody.com/wallet-infrastructure/) Stablecoin and digital asset wallet infrastructure for cross-border payment operations, with travel rule compliance and multi-chain support. --- ## Company - [About Liminal](https://www.liminalcustody.com/about-us/) — Founded 2021 by Mahin Gupta (started India's first Bitcoin company buysellbitco.in in 2012; co-founded ZebPay). The team was formerly behind ZebPay, managing billions in transaction volumes. Four core values: Security, Sovereignty, Support, Scalability. Celebrating 5 years of operations as of 2026. - [Team Liminal](https://www.liminalcustody.com/team-liminal/) — Leadership and engineering team profiles. - [Trust Center](https://www.liminalcustody.com/trust-center/) — Comprehensive security and compliance ecosystem. - [Partnership](https://www.liminalcustody.com/partnership/) — Strategic partners include Figment (staking validator infrastructure), Notabene (Travel Rule compliance), and MetaMask (institutional crypto adoption). - [Culture](https://www.liminalcustody.com/culture/) — Employee benefits and team culture. - [Careers](https://liminal.keka.com/careers/) — Open roles across engineering, product, compliance, and operations. --- ## Resources - [Blog](https://www.liminalcustody.com/blog/) — Industry insights covering security, regulations, Web3 developments, and Liminal platform updates. - [Knowledge Center](https://www.liminalcustody.com/knowledge-center/) — Educational content covering crypto fundamentals, blockchain concepts, wallet types, custody models, and key management. - [Case Studies](https://www.liminalcustody.com/case-study/) — Real-world breakdowns of how Liminal helped institutions secure assets and scale operations. - [ZebPay Case Study](https://www.liminalcustody.com/case-study/zebpay/) — Hot wallet-as-a-service implementation. - [Mazimatic Case Study](https://www.liminalcustody.com/case-study/mazimatic/) - [Research & Insights](https://www.liminalcustody.com/insights/) — Market research reports and thought leadership, including guides on stablecoin payment infrastructure. - [Webinars](https://www.liminalcustody.com/webinar/) — Recorded and upcoming webinars with industry experts covering digital asset custody, compliance, and Web3 operations. - [Glossary](https://www.liminalcustody.com/glossary/) — Definitions of key Web3, blockchain, and custody terminology. --- ## Social & Media - [LinkedIn](https://www.linkedin.com/company/liminalcustody/) - [Twitter/X](https://twitter.com/liminalcustody) - [YouTube](https://www.youtube.com/@LiminalCustody) - [Instagram](https://www.instagram.com/liminalhq/) Press coverage: Arabian Business, CoinDesk, Forbes India, Khaleej Times, Economic Times, Mint, IBS Intelligence, Fintech Finance News, e27, Manila Times, TechInAsia. --- ## Legal - [Platform Terms of Use](https://www.liminalcustody.com/terms-of-use/) - [Terms & Conditions](https://www.liminalcustody.com/terms-and-conditions/) - [Privacy Policy](https://www.liminalcustody.com/privacy-policy/) - [Client Disclosure](https://www.liminalcustody.com/client-disclosure/) - [Staking Terms of Service](https://www.liminalcustody.com/staking-terms-of-service/) - [Conflict of Interest Policy](https://www.liminalcustody.com/conflict-of-interest-policy/) Legal entity: First Answer Pte. Ltd. 2026. All rights reserved. --- ## Contact & Demo - **Request a Demo**: https://www.liminalcustody.com/register-today/ - **Mobile App (iOS)**: https://apps.apple.com/in/app/liminal-vaults/id1667220240 - **Mobile App (Android)**: https://play.google.com/store/apps/details?id=com.liminal.app - **Developer Docs**: https://docs.lmnl.app/docs/liminal-overview - **System Status**: https://status.liminalcustody.com/ - **Support Portal**: https://support.liminalcustody.com/support/home [a]@arjobigautam@lmnl.app