This week’s newsletter announces a pending disclosure of minor vulnerabilities for older Bitcoin Core releases, suggests continued testing of RCs for LN software, and describes a proposed technique to make Bitcoin Core nodes a bit more resistant to eclipse attacks. Also included are our regular sections on bech32 sending support, popular StackExchange topics, and notable changes to popular Bitcoin infrastructure projects. https://bitcoinops.org/en/newsletters/2019/06/26/ https://bitcoin.stackexchange.com/questions/88128/gap-limit-is-always-a-problem-possible-to-fix https://bitcoin.stackexchange.com/questions/87991/how-bitcoin-nodes-update-utxo-set-when-their-latests-blocks-are-replaced https://bitcoin.stackexchange.com/questions/88237/is-there-a-reason-to-why-bitcoin-core-does-not-implement-bip39 https://bitcoin.stackexchange.com/questions/88201/is-signature-private-key-required-to-accept-payment-over-lightning-network The Bitcoin Operations Technology Group (Optech) works to bring the best open source technologies and techniques to Bitcoin-using businesses in order to lower costs and improve customer experiences. An initial focus for the group is working with its member organizations to reduce transaction sizes and minimize the effect of subsequent transaction fee increases. We provide workshops, documentation, weekly newsletters, original research, case studies and announcements, and help facilitate improved relations between businesses and the open source community. https://bitcoinops.org/ If you have learned something valuable, donate a couple sats to Max as a thank you note: 3Fe6dcwhkLnMo7c2FrkYduR5xJgo38dTTS https://tallyco.in/HillebrandMax Support the show by stacking sats on https://hodlhodl.com/join/ERCT Listen to WCN Audio Podcasts: https://itunes.apple.com/us/podcast/the-world-crypto-network-podcast/id825708806 Check out the brand new http://WorldCryptoNetwork.com/ Find out more about Max https://towardsliberty.com Follow WCN on Twitter: https://twitter.com/WorldCryptoNet Follow Max on Twitter: https://twitter.com/HillebrandMax ARCHIVE OF KNOWLEDGE: https://towardsliberty.com/videos # Technicals: Bitcoin to the Max: https://youtube.com/playlist?list=PLPj3KCksGbSZtGhC7nIr_Mf1oCeP8U1tV Bitcoin Only: https://www.youtube.com/playlist?list=PLPj3KCksGbSYX2cNoOaV-w-9QuZ62LDk_ Open Source Everything: https://youtube.com/playlist?list=PLPj3KCksGbSb1h33FZbsrtr1feIIwTBHt Bitcoin-Dev Mailing List: https://www.youtube.com/playlist?list=PLPj3KCksGbSZWpXUZAp2y0ftJsjXPWdtO Schnorr: https://www.youtube.com/playlist?list=PLPj3KCksGbSbUYnzXthFazpUw6ZJCUKOu # Economics: Read Rothbard ~ Use Bitcoin: https://youtube.com/playlist?list=PLPj3KCksGbSafpOorg0NdeVXGIPNqV_8a Anarchy in Money: https://www.youtube.com/playlist?list=PLPj3KCksGbSbVzuInEB0Kc7r ... https://www.youtube.com/watch?v=i26-DrhWGxM