Portal

Bridgeless Bitcoin cross-chain swap protocol using BitScaler atomic channels backed by $92M in funding

Bridge No KYC Founded 2018 United States Oct 21

Visit portaltobitcoin.com

3.4/ 5

Our score

Fair

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What is Portal?

Portal is a cross-chain interoperability protocol built to execute atomic swaps across native Bitcoin, Bitcoin-native assets, and external networks without wrapped tokens or custodial bridges. By relying on state-channel and atomic swap designs, the network executes cross-chain transfers directly from non-custodial user balances.

Team and institutional backing

Founded in 2018, Portal is based in San Francisco, United States. The founding team includes CEO Dr. Chandra Duggirala, a physician and technology entrepreneur; CTO Manoj Duggirala, who oversees core protocol engineering and the Portal Swap SDK; and serial entrepreneur George Burke, previously of FreshPay and BookSwim.com. The operational team includes Chief Operating Officer Jack Mills. Across its funding history, Portal has raised approximately $92M in venture capital, including a $34M seed round in January 2024 with participation from Arrington Capital, Coinbase Ventures, OKX Ventures, and Gate.io, followed by a $50M Series A round in August 2025 led by Paloma Investments.

Architecture and core mechanics

The core infrastructure operates via BitScaler, a multi-party channel solution that coordinates cross-chain contracts and peer-to-peer atomic swaps on Bitcoin without requiring changes to base-layer opcodes. Node infrastructure runs through Portal OS, modular validator software incorporating the Liquidity Router and Coordinator to route settlement. Swap counterparties retain full asset custody in local wallets up to contract execution, avoiding bridge lock-up pools and synthetic representations of assets like wrapped BTC. Developers can implement native Bitcoin trades directly into independent applications through the Portal Swap SDK.

Track record and development

Portal deployed public testing infrastructure ahead of rolling mainnet phases, supporting Runes, Ordinals, and cross-chain Layer 1 integrations alongside the network's PTB utility token. In August 2025, the team allocated its Series A funding to onboard institutional liquidity providers, expand developer grant programs, and scale channel capacity for high-volume transactions.

Security trade-offs and protocol risks

While eliminating wrapped-asset depeg vulnerabilities and central pool honeypots, Portal's trust-minimized architecture introduces distinct operational trade-offs. The network's coordinator mechanism and channel settlement depend on responsive counterparty nodes and reliable validator routing.

Founders

Chandra DuggiralaCo-Founder, CEO & Chairman

Medical doctor and entrepreneur with experience in healthcare, technology, and blockchain ventures.

Manoj DuggiralaCo-Founder & CTO

Technical lead and crypto engineer involved in the development of the Portal Swap SDK.

George BurkeCo-Founder

Serial entrepreneur who previously founded BookSwim.com and early Bitcoin processor FreshPay.

Best for:Native Bitcoin holders avoiding wrapped tokensTraders exchanging Ordinals and Runes cross-chainDevelopers integrating direct Bitcoin settlement

Pros and cons

Pros

No wrapped tokens or lock-and-mint bridge contracts
Non-custodial design leaves funds in user wallets until atomic settlement
Native support for Bitcoin, Runes, and Ordinals without synthetic minting
$92M in verified venture backing from Coinbase Ventures, OKX Ventures, and Paloma Investments

Cons

Swap execution speeds are tied to Bitcoin base-layer confirmation times
Channel settlement remains vulnerable to elevated Bitcoin network fee spikes

Our review

3.4/5

Fair

Portal facilitates custody-less, native Bitcoin swaps without wrapped tokens via BitScaler and is rolling out its mainnet in phases.

Security4.0

Speed3.0

Fees3.5

Chain coverage3.0

Ease of use3.0

Portal to Bitcoin operates an interoperability protocol designed to turn native Bitcoin into a settlement layer for cross-chain swaps. Instead of using lock-and-mint mechanisms, liquidity pools with wrapped representations, or centralized custodians, the protocol relies on BitScaler. This system uses multi-party state channels and non-custodial delegation to execute native atomic swaps directly on Bitcoin without requiring new opcodes.

The primary advantage of Portal's architecture is the elimination of wrapped-asset depeg risks and central bridge honeypots. Users execute direct swaps between native BTC, Ordinals, Runes, and external layer-1 or layer-2 chains. Portal validators coordinate transactions via Portal OS without taking custody of user funds. Backed by $92 million in total capital, including a $34 million seed round in January 2024 and a $50 million Series A round in August 2025 led by Paloma Investments, the project holds significant development resources.

However, the protocol presents several trade-offs:

BitScaler relies on state channel liquidity and validator coordination via Portal OS, meaning execution can stall if counterparty channel capacity or validator participation drops.
The PTB token is part of the network's phased mainnet rollout.

Listings are researched and drafted with AI assistance from public sources, then checked for accuracy and readability. Spot an error? Tell us. Editorial policy.

Sources (1)

Portal To Bitcoin

Specs

KYC required ⓘ	No · unverified
Chains	Bitcoin · unverified
Security model	BitScaler trustless multi-party atomic swap channels and non-custodial validator nodes · unverified
Token	PTB · unverified
Native token transfers (no wrapped tokens)	Yes · unverified

Not disclosed by the provider: Design, Chains supported, Typical fee, Typical transfer time, Audited, Intent-based, Max transfer.

Data from the provider's website and public sources. Fees and availability change; confirm on the official site before you sign up.

Key features

BitScaler atomic swaps

Executes trustless, multi-party channel swaps for native Bitcoin without requiring new consensus opcodes or minting synthetic wrapped tokens.

Portal Liquidity Router

Coordinates cross-chain swap routing and peer-to-peer liquidity discovery across Bitcoin layers and external networks without pooling custody.

Portal Swap SDK

Provides developers with programmable integration hooks to execute non-custodial Bitcoin swaps directly inside third-party decentralized applications.

Portal reference wallet

Features a built-in decentralized cross-chain exchange without moving funds through centralized intermediaries.

Portal OS validator nodes

Equips network validators with modular Layer 1 and Layer 2 node components running alongside the network coordinator.

Inside Portal

BitScaler

A trustless multi-party channel solution that scales Bitcoin for decentralized finance by enabling permissionless cross-chain contracts and atomic swaps without new opcodes.

Portal OS

The multichain infrastructure operating system for Portal validators, packaging node configurations, the Portal Liquidity Router, and coordinator modules.

Liquidity Router

A bridgeless liquidity hub designed for asset routing and cross-chain swaps across native Bitcoin layers and external networks.

Swap SDK

A developer toolkit for integrating direct Bitcoin liquidity and native cross-chain swaps into applications across multiple virtual machines.

Portal Wallet

A reference multicurrency wallet featuring a built-in decentralized cross-chain exchange supporting native BTC, Runes, and Ordinals.

RAFA

A generative AI agent platform designed to analyze market data and assist users with crypto investment workflows.

Portal screenshots

BitScaler: The BitScaler product page displays an introduction, a whitepaper button, and a promotional graphic · Oct 21, 2026

User reviews

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Funding and investors

$92MTotal raised

2Rounds

2Investors

Series A Aug 2025 $50M

PI Paloma InvestmentsVenture capital Lead
Source
Seed Jan 2024 $34M

Arrington CapitalHedge fund
Source

FAQ

Who founded Portal to Bitcoin?

Portal to Bitcoin was founded in 2018 by Dr. Chandra Duggirala (CEO and Chairman), Manoj Duggirala (CTO), and serial entrepreneur George Burke.

Does Portal use wrapped tokens for Bitcoin swaps?

No, Portal uses BitScaler state-channel technology to execute native peer-to-peer atomic swaps without wrapping tokens or relying on custodial bridge vaults.

Does Portal have a native token?

Yes, Portal's network operates with the PTB token.

Which assets does Portal support?

Portal supports native Bitcoin (BTC), Ordinals, Runes, and compatible layer-1 and layer-2 assets through its Liquidity Router and Swap SDK.

How does Portal ensure non-custodial transfers?

Portal OS validators run modular node infrastructure to coordinate swaps and routing, but smart contracts and state channels prevent validators from ever taking custody of user funds.