Bitcoin Developers Merge Three Draft BIPs Targeting Signature Aggregation and Lower Fees

Bitcoin developers have merged three new draft Bitcoin Improvement Proposals—BIP 458, BIP 459, and BIP 460—into the official repository to introduce signature aggregation mechanisms. The drafts aim to compress transaction signature payloads and lower transaction fees. Full aggregation compresses ten 64-byte signatures into a single 64-byte payload, representing a 90% payload reduction. Modeled fee reductions range between 7.1% and 14.2% for 10-input/10-output transactions, and reach up to 27.3% for 100-input single-output consolidations. However, these remain draft specifications that require a future soft fork and wallet ecosystem integration to activate on mainnet.