BRC20 · Smart Contracts & Programmability · Now Live

Programmability
comes to Bitcoin L1.

Native Bitcoin DeFi is here. BRC20 now supports smart contracts — bringing decentralized finance, stablecoins, real-world assets, and agentic activity directly to Bitcoin, without bridges or sidechains.

Start Building → Explore the Ecosystem Blog
Bitcoin L1
No bridges · No sidechains
0
Total Wallets
explorer.brc20.build/stats ↗
$0
CEX Volume
explorer.brc20.build/stats ↗
$0
On-chain Volume
explorer.brc20.build/stats ↗
EVM✓
Solidity · Hardhat · Ethers.js
How it works

Build on Bitcoin's
security and permanence.

Develop applications and protocols that leverage the security and permanence of Bitcoin — with full EVM compatibility. Write Solidity, use the tools you already know.

01
Write Solidity, deploy on Bitcoin
Full EVM compatibility. Use Hardhat, Foundry, or Ethers.js. Port contracts from Ethereum or any EVM chain with no rewrites. Proxy contracts and modular architectures fully supported.
02
No extra gas for users
Users pay only standard Bitcoin miner fees. Contract execution is handled by the indexer layer — no gas tokens, no wallet confusion, no sticker shock on every transaction.
03
No bridges, no trusted middlemen
Interactions happen via standard Bitcoin inscriptions. No multisigs, no custodians, no off-chain approvals. Bitcoin's proof-of-work is the only security assumption you need.
04
Fully open source and permissionless
Built on the open-source OPI indexer. Anyone can run a node, audit the code, or build on top. The spec is public. The protocol is neutral.
05
Backward compatible from day one
Every existing 4 and 5-byte BRC20 token gains programmability. Existing holders need zero action. Deposits are voluntary and permissionless — nothing breaks.
06
Ordinals-aware smart contracts
Contracts can natively interact with Ordinal inscriptions — enabling inscription staking, dynamic rewards, and token-gated applications directly on Bitcoin.
The Bitcoin economy is open

Proven financial primitives,
now native to Bitcoin.

DeFi, real-world assets, and the agentic economy have already been proven on other chains. BRC20 programmability brings them to Bitcoin L1 for the first time.

DeFi on Bitcoin
Native Bitcoin DeFi
AMMs, lending markets, and liquidity protocols — all settling on Bitcoin's base layer, secured by proof-of-work.
  • Automated market makers with BRC20 liquidity pools
  • Lending and borrowing with on-chain collateral
  • Staking and yield protocols on Bitcoin L1
  • Permissionless, non-custodial, and composable
Real-World Assets
RWA Tokenization
Tokenize real assets on the most secure blockchain without bridges or custodians.
  • On-chain ownership of real estate, treasuries & commodities
  • Programmable transfer rules via smart contracts
  • Bitcoin finality as the settlement layer
  • Composable with BRC20 DeFi from launch
Agentic Economy
AI & Agent Finance
AI agents need a programmable, trust-minimized financial layer. Bitcoin now has one.
  • Agents hold BRC20 assets and execute autonomously
  • Programmable micropayments and on-condition triggers
  • Multi-agent coordination via Bitcoin smart contracts
  • AI-managed liquidity strategies (DeFAI)
Stablecoins
Stablecoins on Bitcoin
Stablecoins are one of the largest markets in crypto — USDT alone exceeds $100B. For the first time, they can be issued and settled natively on Bitcoin, backed by its unmatched security.
  • Issue and redeem stablecoins directly on Bitcoin L1
  • Collateralized by BRC20 assets via smart contracts
  • Secured by Bitcoin's proof-of-work
Governance & DAOs
On-chain Governance
Token holders vote, proposals execute automatically — all on Bitcoin's base layer.
  • On-chain voting and proposal execution
  • Treasury management via smart contracts
  • Protocol-owned liquidity for BRC20 DAOs
Launchpads
Fair Token Launches
Smart contract-enforced launch mechanics — no information asymmetry, no front-running.
  • Snipe protection built into launch contracts
  • Verifiably transparent mechanics on-chain
  • Integrated with BRC20 DeFi at launch
₿
Ecosystem

Bitcoin L1 has a
full ecosystem now.

Apply to join →
BRC20 Protocol Maintainers
↗
Best in Slot
Core Developer · Indexer
Authors and maintainers of the BRC20 Programmable Module and the open-source OPI indexer powering the ecosystem.
↗
OKX
Indexer · Exchange · Wallet
One of the world's largest exchanges and a core BRC20 indexer — providing infrastructure, liquidity, and wallet support.
↗
UniSat
Indexer · Marketplace · Wallet
The leading Bitcoin-native marketplace and wallet — a core BRC20 indexer and one of the most widely used gateways to the ecosystem.
↗
Layer 1 Foundation
Protocol Governance
Neutral governance body for the BRC20 protocol. Co-designed BRC2.0 to ensure the upgrade remained open and backward-compatible.
Wallets & User Gateways
↗
Xverse
Wallet
The most widely used Bitcoin wallet for Ordinals and BRC20 — with native support for BRC2.0 smart wallet features.
↗
UniSat Wallet
Wallet · Browser Extension
Browser extension wallet with deep BRC20 support and BRC2.0 smart contract interactions.
More Wallets
Coming Soon
Additional Bitcoin wallet integrations in progress.
⏳ Integrations in progress
Hardware Support
Coming Soon
Ledger and Trezor support for BRC2.0 smart contract signing.
⏳ In development
DeFi Protocols & Applications
↗
BiS AMM
DEX · AMM
Native automated market maker for BRC20. Instant non-custodial swaps with Bitcoin settlement and permissionless liquidity pools.
↗
CoinCooker
Launchpad
Bitcoin token launchpad built on BRC2.0. Smart contract-enforced launch mechanics with snipe protection and fair distribution.
↗
Yuzo
BTCFi Infrastructure
Enterprise-grade BTCFi infrastructure — DeFi primitives, smart contract signatures, and AI-powered financial tooling for BRC20.
↗
Subfrost
Wrapped Bitcoin
Wrapped Bitcoin provider for the BRC20 ecosystem — enabling native BTC to move fluidly across BRC2.0 DeFi protocols on Bitcoin L1.
Prominent BRC20 Tokens
↗
$ORDI
First BRC20 Token
The first BRC20 token ever deployed — now fully programmable with BRC2.0 smart contracts.
↗
$SATS
BRC20 · High Liquidity
One of the most widely held BRC20 tokens — now programmable and composable across BRC2.0 DeFi protocols.
↗
NUTKIN
Community · BRC20
Community-driven BRC20 leveraging the programmable module for governance, staking, and Bitcoin-native DeFi.
Your Token Here
Any 4–5 byte BRC20
Every existing 4 and 5-byte BRC20 token becomes programmable — automatically.
✓ No action required
Developer Resources

Everything you need
to start building.

Open source, well-documented, and ready for Ethereum developers. Start on Signet today.

↗
Programmable Module
GitHub · Open Source · Rust
The core implementation of BRC2.0. EVM execution engine, JSON-RPC server, and Bitcoin precompiles.
github.com/bestinslot-xyz →
↗
Docs & Knowledgebase
Documentation
Architecture guides, contract lifecycle, EVM developer mental model, and deployment walkthroughs.
docs.brc20.build →
↗
Block Explorer
Mainnet & Signet
Browse blocks, contracts, and transactions. View full network stats at explorer.brc20.build/stats.
explorer.brc20.build →
↗
Blog & Updates
Protocol News
Deep dives on protocol upgrades, ecosystem news, roadmap posts, and technical explanations.
blog.bestinslot.xyz →
Latest News

In the press & on the blog.

View all posts →
₿
⛓️
Best in Slot Blog
BRC20 Phase 2 Activates at Block 934,888 — Full Programmability Unlocked for All BRC20 Tokens
January 6, 2026
⚡
💱
Best in Slot Blog
BiS AMM: Instant BRC20 Swaps on Bitcoin, Permissionless Liquidity
November 11, 2025
📊
📋
Best in Slot Blog
BRC20 Phase 2 Status Update — Readiness Checks and Ecosystem Alignment
September 30, 2025
📰
CoinDesk
Bitcoin Token Protocol BRC20 Enables EVM-Style Smart Contracts with BRC2.0
September 1, 2025
🔓
Decrypt
BRC-20 Indexer Upgrade Brings Ethereum-Like Features to Bitcoin
2025
🔶
Binance Square
BRC2.0 — Programmable Bitcoin Assets and the Future of BTCFi
2025
📓
Block Skunk
Ordinals V2 Drops: Why Bitcoin's $62B BRC20 Market Just Got Smarter
2025
❓
Best in Slot Blog
BRC2.0 FAQ — Smart Contracts, dApps, RWAs and More on Bitcoin
July 2, 2025
Bitcoin L1 Ecosystem

The people powering
Bitcoin's next chapter.

"The holy grail is combining the two gold standards: Bitcoin as the most decentralized and secure network, and the EVM as the most proven virtual machine. BRC2.0 makes that real."

D
Domo
Creator of BRC20 (@domodata)

"We upgraded Bitcoin's calculator-style indexer into a Turing-complete computer. Adoption of Bitcoin native assets was stifled because there were no dApps — that changes now."

E
Eril Binari Ezerel
CEO, Best in Slot (@0xBinari)

"BRC2.0 is a genuine, fully backward-compatible upgrade. All existing BRC20 holders benefit automatically — no migration, no action, no disruption to the base token."

L1
Layer 1 Foundation
Protocol Governance (@L1Fxyz)
FAQ

Common questions.

No action is required. BRC20 programmability is fully backward compatible. Tokens remain exactly as they are. If you want to use smart contract features, you can optionally make a permissionless deposit into the module — but all existing transfer and trading functionality works exactly as before.
It's an upgrade to the BRC20 indexer that embeds an EVM execution engine (built in Rust using revm) directly into the indexing layer. Smart contracts are inscribed on Bitcoin as witness data, and the module executes them deterministically — with results anchored to Bitcoin's base layer. It exposes a JSON-RPC 2.0 server fully compatible with standard Ethereum tooling.
Yes. BRC2.0 is fully EVM-compatible. You can use Hardhat, Foundry, Ethers.js, and Metamask-compatible wallets. Existing EVM contracts can be ported with no rewrites, including proxy contract architectures and modular patterns.
Layer 2s and sidechains introduce external trust: bridges, validators, sequencers, or multisig operators. BRC20 programmability executes and settles directly on Bitcoin L1 using standard Bitcoin transactions and witness data. There are no sequencers, no off-chain approvals, and no counterparty trust beyond Bitcoin's own proof-of-work.
Users pay only standard Bitcoin miner fees for on-chain inscriptions. Computation costs from smart contract execution are absorbed by the indexer layer. There is no separate gas token to buy or manage.
Yes. The BRC20 Programmable Module is fully open source on GitHub at github.com/bestinslot-xyz/brc20-programmable-module. Written in Rust, built on the Open Protocol Indexer (OPI). Anyone can run a node, audit the code, or contribute.
BRC2.0 is live on Bitcoin Signet for testing. You can deploy and interact with smart contracts using the public block explorer at explorer.brc20.build and standard Ethereum tooling. The Signet environment is open to all developers.

Build on the most
secure blockchain.

Join developers and protocols bringing smart contracts, DeFi, and financial infrastructure natively to Bitcoin.

Read the Docs → GitHub Discord