Linear (LINA)

Overview

Linear Finance was a decentralized finance project built around synthetic assets: digital tokens designed to follow the value of another asset. Its native token, LINA, helped support the system. Users could pledge LINA as collateral, create a dollar-linked token called ℓUSD, and use ℓUSD to trade synthetic assets known as Liquids. The project’s main applications combined these steps in one system. (binance.com)

Linear’s team announced that it would cease operations in March 2025. It set April 2, 2025 as the shutdown date for its suite of decentralized applications, apart from a burn-and-unstake portal intended for remaining positions. LINA remains a blockchain token, but the applications that gave it much of its original purpose are no longer operating as a full trading platform. Understanding Linear today therefore means understanding both how its design worked and how the project ended. (w.twstalker.com)

History & Team

Founders and early development

Kevin Tai and Drey Ng co-founded Linear Finance. Tai brought experience in investment banking and structured financial products. Ng had worked in banking and on projects that represented assets using blockchain tokens. They described Linear as a way to make a wider range of financial markets accessible through decentralized software. (medium.com)

Linear took shape during the growth of decentralized finance in 2020. In September of that year, it announced a $1.8 million financing round backed by investors including NGC Ventures, Hashed, CMS Holdings, Genesis Block, Alameda Research, and Kenetic Capital. The project later launched its Buildr and Exchange applications on mainnet in January 2021. These milestones moved Linear from a proposed synthetic-asset system to a set of applications people could use. (panewslab.com)

The project faced a major setback in September 2023 when an attacker created a large amount of a synthetic asset called ℓAAVE and exchanged it for ℓUSD. Linear later continued developing other products, including a perpetual-contract trading application. In March 2025, however, the team said that its operations had not generated sustainable returns and announced a wind-down. (medium.com)

Technology & How It Works

Creating synthetic assets

A synthetic asset gives its holder exposure to a price without requiring ownership of the underlying item. For example, a token designed to track gold can change in value as gold’s market price changes, while the holder owns the token rather than physical gold. Linear called its synthetic assets Liquids. Its design covered exposure to areas such as cryptocurrencies, commodities, currencies, and market indexes. The project described these as delta-one assets, meaning they were intended to follow movements in their reference prices closely. (c3.coinlore.com)

The process began with Linear Buildr. A user pledged accepted tokens, especially LINA, and created ℓUSD against that collateral. The collateral had to exceed the value of the debt being created. That extra backing was central to the design because the value of pledged tokens could change. A user could then take ℓUSD to Linear Exchange and exchange it for a Liquid. To release pledged collateral, the user had to settle the related debt by burning the required ℓUSD. (c3.coinlore.com)

The shared debt pool and price feeds

Linear used a shared debt pool as the counterparty to exchanges. Instead of waiting for another person to place an opposite order for a particular Liquid, a trade interacted with the protocol’s contracts. Outside price feeds, called oracles, supplied the reference prices used to value the synthetic assets. This model was meant to make exchanges between different types of exposure straightforward. It also meant that the debt linked to a collateral provider could change as the overall mix of Liquids changed. (c3.coinlore.com)

Linear used Ethereum and BNB Smart Chain in its cross-chain design. LINA existed in ERC-20 and BEP-20 forms, while the project placed important building and exchange activity on BNB Smart Chain to make transactions faster and less costly than its original Ethereum-based approach. A bridge connected parts of the system across the two networks. The team’s shutdown notice said that the LINA and ℓUSD bridges between Ethereum and BNB Smart Chain would close with the applications. (binance.com)

Tokenomics & Utility

Linear’s published token allocation set a total supply of 10 billion LINA. The largest portion, 40%, was assigned to staking rewards. Other planned allocations included 15% for reserves, 10% for the team, 10% for the ecosystem, 5% for the community, and 5% for exchange-related purposes. Seed, private, and public sales, along with an adviser allocation, made up the remainder. These figures describe the project’s distribution plan, rather than the present-day activity of its applications. (binance.com)

LINA’s main practical role was collateral. Pledging it in Buildr allowed users to create ℓUSD, which connected the token to trading on Linear Exchange. The economic model also assigned rewards to eligible collateral providers, drawing on tokens set aside for staking and on exchange fees. The project proposed that LINA holders would help decide matters such as collateral requirements, asset listings, and fee allocation through LinearDAO. Its early documents described parts of that governance system as future development, so the proposal should be read as part of Linear’s original design. (binance.com)

The shutdown changed the everyday meaning of these uses. LINA still represents a token balance on its supported blockchain, but routine minting, synthetic-asset trading, and reward activity through the former application suite ended with the wind-down. The operations team said remaining locked and vesting rewards had been moved to users’ staked balances as part of the closure process. (w.twstalker.com)

Ecosystem & Use Cases

At its center, Linear offered a path from crypto collateral to several kinds of market exposure. Buildr handled collateral and ℓUSD creation. Exchange let users move between ℓUSD and Liquids. The project also developed other tools over time, including a marketplace and a perpetual-contract exchange, or PerpDEX. Its closure notice covered these applications as well as the cross-chain bridge, showing that Linear had grown beyond its original two-app structure. (binance.com)

A simple example explains the intended use. A person could pledge LINA, create ℓUSD, and exchange that ℓUSD for a Liquid following a commodity. The position would provide price exposure in token form. Later, the person could exchange back into ℓUSD, repay the debt, and unlock the pledged collateral. Each part relied on smart contracts rather than on a traditional brokerage account. (c3.coinlore.com)

Linear’s cross-chain approach was also meant to connect its assets with the broader decentralized finance ecosystem. Tokens on Ethereum and BNB Smart Chain could be held in compatible wallets, and the bridge was designed to move supported assets between the networks. Following the April 2025 shutdown, these products serve mainly as examples of what the project built, rather than as a description of an active, complete service. (binance.com)

Advantages & Challenges

Linear brought several ideas together in an approachable way. Its shared pool was designed to support exchanges across different synthetic assets without requiring a separate buyer and seller for every trade. Overcollateralization gave the system a defined method for backing newly created ℓUSD. Using a faster, Ethereum-compatible chain for frequent actions also addressed the cost and speed of interacting with DeFi applications. (c3.coinlore.com)

Those same features created demanding technical and economic tasks. The protocol needed reliable price feeds, sound rules for collateral, and accurate accounting for a debt pool whose value could shift. The September 2023 ℓUSD exploit showed how a failure in synthetic-asset creation could affect the connected exchange system. Later, the team said it could no longer sustain operations. These events are central to Linear’s history because they help explain why a working token and an operating financial application are different things. (c3.coinlore.com)

Where to Buy & Wallets

LINA is listed on KoinBX in LINA/INR and LINA/USDT markets. The token has also appeared in independently supplied pools on PancakeSwap on BNB Smart Chain. Availability depends on the platform and the user’s location. Several larger exchanges removed LINA during 2025: Binance ended its spot trading pair in March, Bitget removed its pair in April, and KuCoin later removed its LINA pairs. (koinbx.com)

MetaMask can hold tokens on both Ethereum and BNB Smart Chain, the networks used for Linear’s ERC-20 and BEP-20 versions. Wallet software can display a token after its contract address is added on the matching network. The original Linear bridge no longer provides a way to move LINA between those networks, so the network attached to a token balance matters when receiving or transferring it. (binance.com)

Regulatory & Compliance

Linear’s products touched several areas of financial regulation because they combined crypto tokens, synthetic exposure, and, later, perpetual contracts. In the United States, the Commodity Futures Trading Commission has applied derivatives rules to certain decentralized platforms offering leveraged digital-asset transactions. In the European Union, regulators assess whether a crypto-based product is a financial instrument under existing financial-market rules; a derivative can fall under those rules rather than the general framework for crypto-assets. The treatment of any particular activity depends on the product’s structure and jurisdiction. (cftc.gov)

Islamic-finance standards also focus on the structure of a transaction. They restrict riba (interest), gharar (excessive contractual uncertainty), and maysir (gambling or speculation). The Islamic Financial Services Board notes that financial derivatives are usually not permissible under Shariah-compliant finance. Linear’s synthetic-asset and perpetual-trading products therefore do not provide a basis for describing the protocol as Shariah-compliant. An assessment of LINA ownership itself would depend on the proposed use of the token and the applicable scholarly standard. (ifsb.org)

Future Outlook

Linear’s announced course was a wind-down, not a continuation of its original roadmap. The operations team scheduled Buildr, the synthetic Exchange, the bridge, the marketplace, and PerpDEX to go offline on April 2, 2025, while leaving a limited burn-and-unstake function for remaining positions. With that decision, earlier plans for additional trading features or broader cross-chain growth ceased to describe an operating development program. (w.twstalker.com)

Linear remains useful as a case study in decentralized synthetic assets. It shows how collateral, shared debt, oracle prices, and cross-chain applications can be assembled to create market exposure in token form. Its history also shows that a project’s technical design, token, and continued operation each have their own story. (c3.coinlore.com)

Summary

Linear Finance used LINA as a foundation for a cross-chain synthetic-asset system. Users pledged collateral, created ℓUSD, and traded Liquids through applications built around a shared debt pool. After several years of development, the team closed the application suite in April 2025. LINA remains part of the project’s blockchain history, while Linear’s lasting educational value lies in the clear example it offers of how synthetic-asset DeFi was designed and operated. (c3.coinlore.com)