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Crypto World

Solving Bitcoin’s gas issue (without a fork)

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Frederic Fosco

Disclosure: The views and opinions expressed here belong solely to the author and do not represent the views and opinions of crypto.news’ editorial.

Every smart contract platform has a fee asset baked in. For example, Ethereum (ETH) has ETH, Solana (SOL) has SOL, but with Bitcoin (BTC), however, things get messy. If you want expressive apps, you usually end up adopting a second network’s economics. 

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Summary

  • Bitcoin doesn’t price computation, only block space. Unlike Ethereum or Solana, BTC’s fee market is built around sat/vB for transaction inclusion, not metering smart contract execution.
  • Execution can move off-chain while settlement stays on Bitcoin. Systems like OpNet run contract logic in a Wasm VM while anchoring payments and final state changes through normal BTC transactions.
  • BTC can function as the gas asset without a new token. By pricing execution costs in satoshis and settling interactions through Bitcoin transactions, apps avoid creating a second fee economy.

On Stacks, for example, you pay fees in STX. On EVM-style Bitcoin layers, you might be told that BTC is the gas token, but it’s typically an L2-native representation with EVM-like conventions (including 18 decimals), and you’re still operating inside that L2 environment. Bitcoin itself, meanwhile, already has a clean fee market, where users bid for block space in sat/vB, and miners prioritize higher fee rates.

With this in mind, what if a smart contract interaction could be initiated and paid for as a normal Bitcoin transaction, with fees in BTC terms (no extra gas token or fork) while the smart part runs elsewhere and stays provably tied back to Bitcoin? OpNet is setting out to provide an answer. 

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Bitcoin doesn’t meter compute (that’s a problem)

Bitcoin’s fee market is excellent at one thing: pricing block space. You compete in sat/vB, miners pick the highest fee rates, and the network stays simple and adversarially robust. What Bitcoin does not do is run a general-purpose execution environment where the chain can measure and charge for arbitrary computation. Bitcoin Script is deliberately stateless and not Turing-complete, specifically lacking loops or gotos, so every node can validate scripts predictably without opening the door to unbounded computation.

That’s why most Bitcoin smart contract approaches end up placing execution on a separate system that can meter compute and run a fee market of its own. Once you have that separate execution layer, it usually comes with a separate fee asset (Stacks, for instance, charges fees in STX).

This isn’t ideal, and a system where you could keep payment within Bitcoin’s native fee market while moving execution elsewhere would be preferable.

Execution isn’t what Bitcoin needs to do

Once you accept that Bitcoin Script is intentionally limited (stateless and not designed for unbounded computation), you start thinking about how to make Bitcoin settle the results and the payments.

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Indeed, execution can happen in a dedicated virtual machine that’s built to run smart contract logic deterministically, while Bitcoin remains the base layer that timestamps, orders, and prices the interactions through its existing fee market.  In OpNet’s design, contract logic is evaluated by a Wasm-oriented VM (OP-VM), while the broader node stack is explicitly built to manage and execute smart contracts using Bitcoin’s existing transaction and UTXO mechanics.

Crucially, this isn’t paired with a new fee asset. Bitcoin doesn’t need to meter computation to be the gas currency. It needs to be the final settlement layer that everything ultimately pays into and anchors to.

What a BTC-paid contract call looks like

Our interaction model follows a simulate-then-spend flow rather than a conventional smart contract execution pattern, with the final execution step taking place as an actual Bitcoin transaction. First, your app calls a contract method in simulation mode. That request goes through a provider to an OPNet node, which executes the contract in its VM and returns a CallResult (including gas/fee estimates) without broadcasting anything to Bitcoin.

If the call is state-changing, you take that CallResult and send it as an execution. At this point, the library builds a Bitcoin transaction, signs it, and broadcasts it to the Bitcoin network. Two points are worth remembering:

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  • Miner fees are Bitcoin-native. You choose a feeRate in sat/vB, optionally add a priorityFee in sats, and set a hard cap on fee spending via maximumAllowedSatToSpend (the parameter is literally named maximumAllowedSatToSpend).
  • The contract target is expressed as a P2OP-style contract address. The contract instance exposes its p2op address format, and transactions reference a “p2op contract address” as the contract destination.

Meanwhile, OpNet’s own compute metering still exists. But it’s priced in satoshis (estimated SATS Gas, refunds in SATS, etc.), so the unit never drifts into a separate token economy. 

Less friction, cleaner incentives

Users no longer have to adopt a second fee economy just to interact with apps. On Bitcoin, fees are already an auction for block space, priced per byte and paid to miners. When contract calls are just Bitcoin transactions, you’re back on familiar ground (with sat/vB fees, mempool churn, and miner incentives), without having to learn a separate gas token market.

Also, the tooling leans into standard Bitcoin workflows such as UTXO handling, provider connections, and even offline/cold signing. Contracts live in a Wasm runtime and are written in AssemblyScript, aiming for Solidity-like expressiveness without pretending Bitcoin Script suddenly became a VM.

Bitcoin as gas, without a second token

The claim that BTC cannot function as gas usually rests on the assumption that the base layer must meter computation to price it. Bitcoin does not meter computation; it meters block space and settles value. 

The solution is to let a virtual machine handle execution deterministically, and then route every state-changing interaction through a standard Bitcoin transaction, where fees are expressed in familiar terms such as sat/vB and capped in satoshis. In our case, this is implemented at the client level through parameters like feeRate and maximumAllowedSatToSpend.

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So maybe BTC-as-gas is truly plausible. Fees stay BTC-native from end to end, while the contract runtime stays WebAssembly-based (AssemblyScript → Wasm), which keeps the logic expressive without changing the fee currency.

Frederic Fosco

Frederic Fosco

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Frederic Fosco, also known as Danny Plainview, is a co-founder of OP_NET and has been involved in Bitcoin since 2013. He launched OP_NET to make Bitcoin natively programmable, unlocking smart contracts and DeFi primitives directly on layer-1. His focus is building real on-chain functionality without bridges, custodians, wrapping, or synthetic Bitcoin, keeping self-custody and decentralization non-negotiable.

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Crypto World

US Job Market Flashes Warning Signs Last Seen During 2020 Pandemic

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The US job market is showing alarming deterioration. According to The Kobeissi Letter, government job openings dropped 51,000 in February to 701,000.

This marked the second-lowest reading since December 2020. Available government vacancies have fallen 524,000 since their 2022 peak and now sit at pre-pandemic levels.

In addition, federal government openings fell to 89,000, the second-lowest since the pandemic low. This level is also in line with readings from 2017 and 2018.

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“Meanwhile, the government hiring rate stood at 1.4%, one of the lowest levels since mid-2020 and matching the 2016 and 2017 lows. Government hiring is frozen,” the post read.

US Government Job Openings
US Government Job Market Openings Decline Since 2022 Peak. Source: X/The Kobeissi Letter

Meanwhile, the private sector is shedding jobs at scale. Oracle reportedly laid off up to 30,000 employees on March 31. Amazon cut 16,000 corporate roles in January, and Block eliminated over 4,000 positions. These were just some of the many companies that made job cuts.

Consumer Sentiment Signals Trouble Ahead

In a separate post, The Kobeissi Letter suggested that forward-looking indicators” point to a further increase in US unemployment.” The Conference Board’s March survey showed that only 27.3% of consumers described jobs as “plentiful.”

This was a marginal uptick from 26.7% in February, but still well below the roughly 55% who felt that way in 2022. At the same time, 21.5% said jobs were “hard to find,” up from approximately 10% over the same period.

The gap between these two readings, known as the labor market differential, fell to just 5.8 points. That represents the lowest level since the 2020 pandemic.

The Kobeissi Letter noted that historically, this indicator has been one of the most reliable leading signals of rising unemployment.

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“Furthermore, current levels in this indicator have only been seen prior to or during a US recession since the 1990s. The job market is set for even more weakness,” the analysts added.

US Consumer Confidence. Source: X/The Kobeissi Letter

With these indicators pointing in the same direction, the March jobs report will be closely watched to determine whether underlying deterioration is cyclical or marks a deeper shift.

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The post US Job Market Flashes Warning Signs Last Seen During 2020 Pandemic appeared first on BeInCrypto.

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Circle targets the wrapped Bitcoin market with cirBTC

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How Circle settled $68M in minutes using its own USDC rails

Circle plans to launch its own version of wrapped Bitcoin on the Ethereum network to target institutional markets.

Summary

  • Circle plans to launch cirBTC on Ethereum, a 1:1 bitcoin backed wrapped asset targeting institutional markets.
  • Wrapped Bitcoin allows BTC to be used on networks like Ethereum, giving institutions access to decentralized finance applications.

In a Thursday announcement, stablecoin issuer Circle said it plans to introduce cirBTC, a token that is backed 1:1 by bitcoin and aimed at over-the-counter desks, market makers, lending protocols, and other institutional participants, framing the asset as a “highly secure and neutral version of wrapped BTC.”

Wrapping allows a native asset like Bitcoin to be tokenized and used across other blockchains. In this case, wrapped Bitcoin lets BTC be brought onto networks such as Ethereum, which gives users access to decentralized finance applications.

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The token will also launch on Circle’s layer-1 blockchain Arc and integrate with the Circle Mint platform.

Circle joins a growing list of participants that have introduced wrapped Bitcoin as demand for decentralized finance continues to expand among institutional users.

The sector is currently led by BitGo’s Wrapped Bitcoin, which currently holds a market capitalization of about $8 billion.

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Coinbase also launched its own version, Coinbase Wrapped Bitcoin (cbBTC), in September 2024, which has since grown rapidly to reach a market capitalization of $5.9 billion. Last year, Coinbase launched Wrapped ADA (cbADA) on the Base blockchain to facilitate cross-chain liquidity.

Meanwhile, several other exchanges have released their own wrapped assets, including Kraken Wrapped BTC (kBTC), Binance Wrapped BTC (BBTC), Bitget Wrapped BTC (BGBTC), and OKX Wrapped BTC (okBTC), among others. These offerings are often paired with proof-of-reserve transparency to assure institutional traders that the underlying assets are held in secure, 1:1 custody.

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Japanese Gen Z Fears Crypto Scams More Than Any Other Generation

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Japanese Gen Z stands out as the most scam-conscious generation when it comes to crypto. A new survey of 1,486 people across Japan found that younger users are far more alert to fraudulent pitches on social media than their older peers.

The gap between generations reveals that Japan’s crypto trust problem is not uniform — it varies by age and online habits.

Gen Z Watches for Scams, Boomers Struggle With Basics

The survey, conducted by Tokyo-based consulting firm Clabo in February 2026, asked respondents why they view crypto as suspicious. The top answer overall was “I don’t understand how it works,” chosen by 23.3% of respondents. Price swings came second at 21.1%, followed by fraud concerns at 19.2%.

But generational breakdowns tell a different story. Gen Z respondents flagged social media scams as their primary worry. They encounter fake giveaways and shady promotions on platforms they use daily. Older cohorts, including Japan’s bubble generation, pointed instead to the complexity of blockchain technology itself.

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How well do you understand crypto? Most Japanese respondents said they have only a vague understanding of how crypto works. Source: Clabo Inc.

Millennials showed the highest rate of actual crypto investment among all age groups. They also reported the most active information-seeking behavior.

Across all groups, half of the respondents said they had never invested in crypto. Only 33.7% said they currently hold digital assets. Another 15.7% said they once invested but have since stopped.

YouTube Leads for Investment Decisions

When it comes to where people get crypto news, traditional news sites ranked first at 38.4%. Social media followed at 36.7%, with YouTube at 31.6%. But for actual investment decisions, YouTube jumped to first place at 27%.

The survey suggests that Japan’s crypto industry still faces a basic education gap. Clabo, which offers wallet recovery and security consulting, recommended more accessible educational content tailored to each generation’s specific concerns.

The post Japanese Gen Z Fears Crypto Scams More Than Any Other Generation appeared first on BeInCrypto.

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Circle to Launch cirBTC Wrapped Bitcoin for Institutions

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Circle to Launch cirBTC Wrapped Bitcoin for Institutions

Stablecoin issuer Circle said it plans to launch its own version of a wrapped Bitcoin, which would put it against incumbents Coinbase and BitGo as it targets institutional users. 

The asset, called cirBTC and announced on Thursday, is set to launch on Ethereum, backed 1:1 by bitcoin (BTC) and aimed at over-the-counter desks, market makers and lending protocols. 

Circle said the asset is designed to provide institutions with a “highly secure and neutral version of wrapped BTC.”

Financial institutions, which have become significant buyers of Bitcoin, have been actively exploring decentralized finance. Wrapped versions of Bitcoin would allow the asset to be used on other chains, such as Ethereum, giving them access to DeFi. 

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In addition to Ethereum, the new asset will also launch on Circle’s layer-1 blockchain Arc and its Circle Mint platform, said Circle. 

Cointelegraph contacted Circle for further details, but did not receive an immediate response. 

Circle joins race led by Coinbase and BitGo

Circle’s new wrapped Bitcoin joins a market currently led by BitGo’s Wrapped Bitcoin (WBTC) and Coinbase Wrapped Bitcoin (cbBTC).

Coinbase’s cbBTC was launched in September 2024 and has a current market capitalization of $5.9 billion and a current supply of 88,800 tokens. 

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BitGo’s wBTC is the dominant wrapped Bitcoin token, with a market capitalization of about $8 billion and 119,157 tokens in circulation. However, that figure is roughly half its November 2021 peak, when Bitcoin hit its cycle all-time high.

Related: WBTC expands to Hedera as Bitcoin liquidity flows into new DeFi rails

WBTC supply has declined over the past few years. Source: Dune

Crypto exchanges launched their own wrapped Bitcoin

Several crypto exchanges have launched variations of wrapped Bitcoin, including Kraken Wrapped BTC (KBTC), Gate Wrapped BTC (GTBTC), Binance Wrapped BTC (BBTC), Huobi BTC (HBTC) and OKX Wrapped BTC (XBTC), but their market caps are a fraction of the two leaders. 

The total combined supply of wBTC and cbBTC stands at roughly 208,000 BTC, according to CoinGecko.

Magazine: Your guide to surviving this mini-crypto winter

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