What is Bonbori?

Bonbori is a cross-chain messaging and consensus layer designed specifically for Bitcoin's off-chain computation ecosystem. The system:

• Creates a standardized framework for validating on-chain events across multiple protocols, such as BRC20, Runes, and Staking

• Enables secure message exchange between different off-chain computation engines

• Provides a decentralized validation mechanism with cryptographic attestations

• Maintains a complete audit trail for all validations

Bonbori serves as the critical foundation for each of Brotocol's core products:

1. Multi-Chain Connector: When Brotocol facilitates movement of stablecoins and other assets onto Bitcoin, Bonbori validates these cross-chain transfers through its threshold-based consensus system, ensuring all assets maintain integrity and security.

2. Account Abstraction DEX: Brotocol's DEX relies on Bonbori to securely tap into liquidity pools across chains like Base and Arbitrum. When a Bitcoin user initiates a trade from their Bitcoin wallet, Bonbori validates the transaction parameters before execution, ensuring optimal rates without compromising security.

3. Payment Protocol: As Brotocol enables non-Bitcoin users to purchase Bitcoin assets using currencies like USDC or ETH, Bonbori provides the attestation layer that verifies these cross-chain payment flows, allowing merchants to confidently receive BTC while buyers use their preferred currency.

What does Bonbori do for Brotocol?

Here’s how Bonbori supports Brotocol’s core products:

🔁 For BroBridge:

• Validates asset transfers across Bitcoin, Stacks, EVM chains, and beyond.

• Produces cryptographic attestations confirming peg-in and peg-out events.

• Ensures that bridging is secure, atomic, and cryptographically verifiable.

• Supports threshold-based consensus (customizable per integration) to validate user intents and unlock assets on destination chains.

💱 For BroSwap:

• Verifies cross-chain trade intents expressed by Bitcoin users.

• Ensures that DEX aggregations and swaps are executed only after proper consensus is reached on transaction validity.

• Confirms final trade state and delivers assets back to Bitcoin wallets after cross-chain execution.

💸 For BroPay:

• Validates cross-chain payment flows when non-Bitcoin users pay with tokens like USDC or ETH.

• Confirms that a user's payment has been correctly routed and converted before releasing pure BTC to the merchant.

• Ensures end-to-end accountability and enables seamless refunds in case of failure.

🛡️ As Infrastructure:

• Provides standardized validation and messaging across all Brotocol integrations (Bitcoin L1, Bitcoin L2s, EVMs).

• Allows validators and verifiers to observe and attest to on-chain events.

• Lets relayers submit proofs and verifiers double-check them before releasing funds or confirming transactions.

• Supports OP_RETURN-based automations triggered directly from Bitcoin L1.

What Bonbori Means

Bonbori (雪洞) refers to traditional Japanese paper lanterns that illuminate pathways during festivals and ceremonies.

Much like these lanterns guide people through darkness, Bonbori guides blockchain data across protocols with clarity and security—illuminating the path for Bitcoin's cross-chain communications.