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Bitcoin Gets Native DeFi Stack as OP_NET Goes Live on Mainnet

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Bitcoin Gets Native DeFi Stack as OP_NET Goes Live on Mainnet

The execution layer’s launch comes alongside a DeFi stack, including a Bitcoin L1 DEX, permissionless smart contract deployment, and OP-20 token launches.

OP_NET, a smart contract protocol that embeds execution directly into standard Bitcoin transactions, activates on Bitcoin Layer 1 (L1) today, March 19. The execution layer brings with it a live DeFi stack that includes a decentralized exchange (DEX), token issuance, permissionless smart contract deployment, and yield farming, without leaving Bitcoin mainnet via bridges or wrapped assets, per a press release shared with The Defiant.

The co-founder of OP_NET, Chad Master, told The Defiant that, unlike Bitcoin Layer 2 (L2) chains or “metaprotocols,” OP_Net operates as a “deterministic execution layer that runs directly on Bitcoin as it exists today – no soft fork, no hard fork, no new opcodes, no separate chain, no separate token. Every OPNet transaction is a real Bitcoin transaction.”

The results, as Master explained, is decentralized applications whose state is anchored to Bitcoin’s settlement layer, with BTC as the only gas asset.

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In a statement, Master noted that the design intent is unambiguous:

“Every OpNet transaction is just a Bitcoin transaction. Users are never doing anything but making Bitcoin transactions. Connect your BTC wallet, make a trustless swap, and your Bitcoin stays Bitcoin. This is what native DeFi on Bitcoin actually looks like.”

At launch, the live DeFi ecosystem centers on MotoSwap, a Bitcoin L1 DEX for swapping BTC and OP-20 tokens (the protocol’s new token standard, the equivalent of ERC-20 tokens on Ethereum), alongside a two-phase swap execution model called NativeSwap that locks a quoted price for five blocks to reduce slippage risk — a necessary design given that Bitcoin transactions can’t be reverted once confirmed.

Permissionless smart contract deployment is live from day one, per the release, and a staking contract, similar to SushiSwap’s MasterChef, allows liquidity providers to create yield farms for new assets. The roadmap includes $PILL liquidity farming going live after the first week, with major stablecoins on Bitcoin via the OP-20S extension standard targeted for early Q2 2026, per the release.

The launch is the latest entry in the fast-growing Bitcoin DeFi (BTCfi) space, and lands amid a broader, sometimes fractious conversation about what Bitcoin’s base layer is actually for. When Bitcoin Core v30 shipped last October, expanding the OP_RETURN data limit from 80 bytes to 100,000 bytes, it triggered a debate, with critics warning of blockchain bloat and legal risk, and supporters arguing it was neutral infrastructure.

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The debate was first flagged by The Defiant in May 2025, when the OP_RETURN limit removal was still a proposal. Meanwhile, the race to bring yield to BTC holders has been accelerating across the stack: Babylon Genesis launched its native BTC staking L1 last April, and Botanix rolled out yield-bearing stBTC last September — all pointing to the same demand to put idle BTC to work, without leaving Bitcoin.

‘SlowFi’: Making Fees a Feature

The team behind OP_NET is framing the opportunity around what they call “SlowFi” — the idea that Bitcoin’s 10-minute block times and L1 fee dynamics create structural exit friction that keeps capital in protocols longer than fast-chain DeFi allows.

On faster chains, sentiment shifts can drain liquidity in seconds; on Bitcoin, settlement delays and congestion fees make panic exits genuinely costly.

Master told The Defiant that the the team sees the SlowFi framing as an a unqiue and intentional feature Bitcoin has to offer:

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“Our motto is ‘functionality over scale.’ We’re not trying to compete with Solana or Ethereum on speed. Bitcoin DeFi settles in blocks, not milliseconds, and that’s a feature for a certain class of capital – the kind that values security and finality over execution speed.” Referencing the potential scale of native BTCfi, he added:

“That capital is enormous and currently has nowhere to go on-chain. OPNet gives it a destination without asking it to leave Bitcoin.”

Master also sees fee generation as a feature, not a side effect — and one with implications for Bitcoin’s long-term security model, which depends increasingly on transaction fees as block subsidies continue to halve, “Every single Bitcoin block will be full. Miners will earn on L1 fee subsidies,” he said in the release, adding in commentary to The Defiant:

“OPNet doesn’t create a problem for Bitcoin – it contributes to solving one. More economic activity on L1 means more fees, which means a stronger security budget for the network.”

The OP_NET founders’ longer-term vision extends well beyond DeFi primitives — into tokenized equities, invoicing, encrypted messaging, and institutional debt instruments issued natively on Bitcoin.

“If Bitcoiners had access to MSTR or STRC natively issued as tokenized assets on Bitcoin — with the ability to trustlessly swap their Bitcoin for those assets,” Master told The Defiant, “I think there is a wide ocean of unexplored possibilities.”

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This article was written with the assistance of AI workflows. All our stories are curated, edited and fact-checked by a human.

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Crypto World

US Treasury To Give Crypto Industry Cybersecurity Intelligence at ‘No Cost’

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United States, Cybercrime, Cybersecurity, Hacks

The US Department of the Treasury’s Office of Cybersecurity and Critical Infrastructure Protection (OCCIP) announced on Thursday that it is expanding its cybersecurity threat identification program to include digital asset companies.

Blockchain companies that choose to take part in the program will receive the same cybersecurity threat intelligence provided to traditional financial institutions at “no cost,” according to the Treasury’s announcement.  

“Cyber threats targeting digital asset platforms are growing in frequency and sophistication,” Cory Wilson, the deputy assistant secretary for cybersecurity at the OCCIP, said. 

United States, Cybercrime, Cybersecurity, Hacks
Losses from crypto hacks between 2022 and 2025. Source: TRM Labs

The initiative fulfills policy recommendations from US President Donald Trump’s administration, outlined in its July 2025 report, titled “Strengthening American Leadership in Digital Financial Technology.” 

Cointelegraph reached out to the Department of the Treasury but did not receive a response by the time of publication.

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The initiative reflects the ongoing challenge of countering evolving cybersecurity threats impacting blockchain protocols and their users, as financial losses from decentralized finance (DeFi) platform hacks alone reached nearly $169 million in the first quarter of this year. 

Related: Google Threat Intel flags ‘Ghostblade’ crypto-stealing malware

Foreign intelligence operatives continue infiltrating crypto projects and companies

Crypto projects and users are increasingly subject to evolving cybersecurity threats, which can be carried out by social engineering or infiltration by state-affiliated hackers, including the North Korean-linked Lazarus Group.

Drift Protocol, a decentralized cryptocurrency exchange, suffered a $280 million exploit this month at the hands of suspected North Korean-affiliated hackers.

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The Drift team physically met the malicious actors at a “major” crypto industry conference and interacted with them for months after the initial meeting, according to a preliminary incident report from Drift Protocol.

United States, Cybercrime, Cybersecurity, Hacks
Source: Nic Puckrin

During the months-long interaction, the hackers deployed crypto-stealing malware on the Drift team’s developer machines, which was activated in the April exploit.

The individuals who first approached the Drift team at the industry conference were not North Korean nationals, according to the report.

The Seals911 team, a group of blockchain cybersecurity specialists, said with “medium-high confidence” that the attack was likely carried out by the same hacker group responsible for the October 2024 hack of the Radiant Capital DeFi platform.

Magazine: Lazarus Group’s favorite exploit revealed — Crypto hacks analysis

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