Technical Analysis: How does the Bitcoin Layer 2 Network Botanix prevent double payments? 》This article introduces the mechanism of Botanix, the second layer network of Bitcoin, to prevent double payments: through the Spiderchain federated proof of stake Bitcoin chain, a rotating multi signature wallet structure (current 2-of-3, future plan 12-of-16 signature mechanism) is used to manage fund flow, ensuring that most coordinators sign for deposit (peg in) and withdrawal (peg out) operations; Design a "conflict input mechanism" using the Bitcoin UTXO model, which requires each peg out transaction to reference the previous output as input. Transactions that repeatedly use the same UTXO will be rejected by the network due to violating the double spending rule. At the same time, combined with the staking penalty mechanism of PoS consensus, the uniqueness of assets is guaranteed from both technical and incentive levels, preventing malicious or accidental replay attacks and achieving secure two-way bridging of cross chain assets. https://www. (wublock123.com)/article/47/42950