🔥 I studied the Runes swap feature of @RichSwap_REE, and technically, I would call it a prime example of the application of smart contract capabilities on the Bitcoin mainnet! From a business perspective, it represents a significant step in unlocking the imagination for DeFi on Bitcoin! 🚀 I've dug into @RichSwap_REE's Runes swap feature, and it's a prime example of what smart contract capabilities can do on the Bitcoin mainnet! It's an even bigger leap forward in unlocking the imagination for DeFi on Bitcoin. It's important to know that other AMMs on the BTC mainnet have only two ways to achieve Rune swaps: 1️⃣ Create RunesA ↔ RunesB pools (which leads to severe liquidity fragmentation) 2️⃣ Execute two transactions on the backend: first swap RunesA for BTC, then swap BTC for RunesB (high cost and significant MEV attack risk). 💡 RichSwap's Runes swap: it can embed and execute two independent swap tasks within a single PSBT on the Bitcoin mainnet, completing the exchange from RunesA to RunesB in one UTXO transaction. ✅ It can be completed in a single transaction, with low costs and no MEV attack risk. --- For context, other AMMs on the BTC mainnet have only two ways to handle Rune-to-Rune swaps: 1️⃣ Create direct RunesA ↔ RunesB pools, which leads to severe liquidity fragmentation. 2️⃣ Execute two separate transactions on the backend: first swapping RunesA to BTC, and then BTC to RunesB. This results in high costs and exposure to MEV attacks. 💡 RichSwap's Rune-to-Rune swap embeds and executes two independent swap tasks within a single PSBT. This completes the entire RunesA to RunesB exchange in one atomic on-chain transaction. ✅ The result: a single transaction, lower costs, and zero MEV risk. Taking the example of directly swapping $IWC for $RICH Rune: 🔗 We see that the PSBT contains a complete set of transaction intentions: two independent intentions that need to be executed by the RichSwap smart contract: 🔸 Intention [0]: swap 0.193 $IWC to 0.00018562 $BTC. 🔸 Intention [1]: swap 0.00018562 BTC to 71,074.6 $RICH. These two intentions clearly define the complete path from RUNE_A → BTC → RUNE_B, all executed within a single standard UTXO transaction. 💡 This is not a simple case of "waiting for the first transaction to confirm before initiating the second." 💡 Instead, it is based on the DPS (Decentralized PSBT Signing) architecture of REE (Runes Exchange Environment). 💡 It achieves multiple, ordered, stateful transaction logic within the UTXO model. For a clearer, code-level process, check out @musinoot's share ⬇️ This feature profoundly demonstrates how REE grants powerful programmability to the Bitcoin mainnet without altering its core consensus, achieving atomic composability—a feat traditionally considered difficult on the UTXO model. To learn more about REE, check out this article ⬇️ --- 💡 Looking ahead, this points to at least two clear trends: 1️⃣ The adoption of stablecoins in the Bitcoin ecosystem will come faster. RichSwap's Rune swap feature is perfectly suited for stablecoins like USDC. 2️⃣ The true composability of BTCFi is about to arrive: today it's the combination of two pools; tomorrow it could be a "lend + swap + stake" trio, all executed in a single transaction. The unique BTCFi applications within the Bitcoin ecosystem are accelerating, and we look forward to it.