9 October 2021. ↑ "[WIP] Aggregate signature module implementation by apoelstra · Pull Request #461 · bitcoin-core/Secp256k1". ↑ "Note that aggsig paper was rejected by ysangkok · Pull Request #479 · bitcoin-core/bitcoincore.org". GitHub. ↑ Antonopoulos, Andreas (2017). Mastering Bitcoin (2nd ed.).