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Opnet brings smart contracts to Bitcoin L1 with WASM and native gas

Tuesday, March 31, 2026 · from 2 podcasts
Ungovernable MisfitsBitcoin Takeover Podcast
  • Opnet runs smart contracts directly on Bitcoin, using a custom WASM VM and BTC for gas, no bridging needed.
  • It solves Ordinals' brittle state by making protocol rules deterministic and fully recreatable from on-chain data.
  • The trade-off is Bitcoin's speed: ten-minute blocks and L1 throughput limit it to high-security, not high-frequency, DeFi.

Bitcoin’s recent DeFi experiments, from Ordinals to BRC-20 tokens, rest on a fragile foundation of off-chain indexers and speculative asset creation. If two indexers disagree on the state, the protocol breaks. The Opnet team argues the solution isn't a sidechain or a bridge, but a new set of rules built directly into Bitcoin's base layer.

On the Bitcoin Takeover Podcast, Danny and Chad detailed their system: a custom WebAssembly virtual machine that executes smart contracts, with users paying for computation using native Bitcoin as gas. This eliminates the need for wrapped assets or trusted bridges, common failure points in other cross-chain systems. The protocol’s entire state is deterministically derived from data in Bitcoin’s witness field, meaning any node running the software will reach the exact same conclusion about contract outcomes and ownership.

Danny, Bitcoin Takeover Podcast:

- The difference here is that with Opnet, you're only ever making Bitcoin transactions.

- You have Bitcoin in your Bitcoin wallet and you're able to connect to DApps and use them just by using your Bitcoin.

The design choice for WASM over the more common Ethereum Virtual Machine is deliberate. It allows developers to write contracts in languages like TypeScript and Rust, aiming for a better developer experience while optimizing for Bitcoin's specific constraints. This positions Opnet not as a high-speed trading layer, but as a foundation for institutional-grade DeFi where security and decentralization are paramount.

Chad, Bitcoin Takeover Podcast:

- The byte code of the smart contracts and the call data are recreatable from 100% of on-chain data.

- Anyone will get the exact same state as the next guy.

The ambition is to move beyond speculative assets. If brittle BRC-20 tokens could achieve a multi-billion dollar market cap, the logic goes, a properly engineered L1 smart contract layer could unlock the vast liquidity currently held in cold storage for more complex financial tools. The constraint is Bitcoin's own rhythm: ten-minute block times and base-layer throughput.

BTC MarketsProtocolPayments

Entities Mentioned

FROSTProtocol

Source Intelligence

What each podcast actually said

Ungovernable Misfits
Ungovernable Misfits

New Frontiers with Frostsnap | FREEDOM TECH FRIDAY 35 • Mar 29

  • Traditional Bitcoin multisig requires a digital descriptor file that lists all participant public keys for recovery.
  • Nick Farrow and Lloyd Fournier say losing the descriptor file makes funds irrecoverable, even if you have the required number of keys.
  • FROST (Flexible Round-Optimized Schnorr Threshold signatures) moves multisig logic from Bitcoin script into the cryptography itself.
  • On-chain, a FROST transaction is indistinguishable from a standard single-signature Taproot payment.
  • This approach expands the privacy set for users to include every standard Taproot user on the network.
  • FROST eliminates the need for a separate descriptor file, reducing recovery to simply meeting a threshold of physical devices.
  • Moving multisig coordination off-chain slashes transaction fees compared to on-chain script execution.
  • The trade-off is increased complexity in the coordination required between devices to generate a single distributed signature.

Also from this episode:

Privacy (1)
  • Lloyd Fournier calls this 'invisible multisig,' hiding complex security setups from public blockchain analysis.
Custody (1)
  • Nick Farrow says this makes inheritance and emergency recovery simpler for non-technical family members.
ProtocolPrivacyCustody
Bitcoin Takeover Podcast
Bitcoin Takeover Podcast

S17 E15: OPNET Smart Contracts on Bitcoin L1 with Danny & Chad • Mar 25

  • Opnet runs smart contracts directly on Bitcoin L1 using a custom WASM virtual machine, not the EVM.
  • The protocol uses native Bitcoin for gas, eliminating the need for wrapped assets or bridging.
  • Danny says users only ever make Bitcoin transactions from their Bitcoin wallet to interact with DApps.
  • Opnet's WASM VM supports TypeScript and Rust smart contracts, prioritizing developer experience over EVM compatibility.
  • Chad states the entire network state is recreatable from 100% on-chain data, ensuring deterministic consensus.
  • The protocol avoids OP_RETURN and uses the witness field, maintaining compatibility across Legacy, SegWit, and Taproot addresses.
  • Opnet scales at Bitcoin's speed, bound by block times and L1 throughput, targeting institutional DeFi over high-frequency trading.

Also from this episode:

Markets (1)
  • The goal is to move beyond speculative NFTs to functional financial tools, capturing idle liquidity in cold storage.
ProtocolAdoptionBTC Markets

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