We introduce Bitcoin-IPC, a software stack and protocol that scales Bitcoin towards helping it become the universal Medium of Exchange (MoE) by enabling the permissionless creation of fully programmable Proof-of-Stake (PoS) Layer-2 chains, called subnets, whose stake is denominated in L1 BTC. Bitcoin-IPC subnets rely on Bitcoin L1 for the communication of critical information, settlement, and security. Our design, inspired by SWIFT messaging and embedded within Bitcoin's SegWit mechanism, enables seamless value transfer across L2 subnets, routed through Bitcoin L1. Uniquely, this mechanism reduces the virtual-byte cost per transaction (vB per tx) by up to 23x, compared to transacting natively on Bitcoin L1, effectively increasing monetary transaction throughput from 7 tps to over 160 tps, without requiring any modifications to Bitcoin L1.

翻译：我们提出比特币-IPC（Bitcoin-IPC）——一种软件栈与协议，通过允许无需许可地创建完全可编程的权益证明（PoS）第二层链（称为子网，其权益以L1 BTC计价），实现比特币的扩容，助其成为通用交换媒介（MoE）。比特币-IPC子网依托比特币L1进行关键信息通信、结算与安全保障。本设计受SWIFT报文系统启发，嵌入比特币的隔离见证（SegWit）机制，可实现跨L2子网经由比特币L1路由的无缝价值转移。独特之处在于，与在比特币L1上原生交易相比，该机制可将每笔交易的虚拟字节成本（vB/tx）降低多达23倍，有效将货币交易吞吐量从7 tps提升至超过160 tps，且无需对比特币L1进行任何修改。