Also included are our regular sections with overviews of changes to services and client software, new releases and release candidates, and changes to popular Bitcoin infrastructure software. This week’s newsletter links to a discussion about routed coinswaps and includes our regular sections with summaries of questions and answers from the Bitcoin Stack Exchange, releases and release candidates, and notable changes to popular Bitcoin infrastructure software. Also included are our regular sections with updates about various projects. 955 updates BIP174 to standardize supplying hash preimages in PSBT input records. 4171 updates the hsmtool command with a new dumponchaindescriptors parameter that prints the output script descriptors for the keys and scripts used by C-Lightning’s onchain wallet. ● Blockstream announces Jade hardware wallet: Blockstream’s new Jade hardware wallet is open source,

supports Bitcoin and Liquid networks, and is compatible with Blockstream Green for Android. ● C-Lightning 0.9.2rc1 is a release candidate for the next maintenance version of C-Lightning. Major new features include support for signet, version 2 address announcement messages, and improvements to PSBT handling.

Major new features include support for new Tor onion services using version 2 address announcement messages, the optional ability to serve compact block filters, and support for signets (including the default signet which has taproot activated). ● LND 0.12.0-beta.rc5 is the latest release candidate for the next major version of this LN node. These descriptors may then be imported into a watch-only wallet to track any onchain transactions made by the LN node. This feature was requested to help improve integration between BTCPay Server’s default hot wallet and the optional LN server. 4715 adds a --reset-wallet-transactions configuration parameter that will remove all onchain transactions from LND’s wallet and then start a rescan of the block chain to repopulate the wallet. As it does, and as more companies, projects, and people start using the network and building on the protocol, then it will continue to grow in value. UPDATE (July 2): The estimated network hash rate decreased in the last 3-4 days, initially by as much as 10%, but rebounding a bit since then. Michael Folkson explains the considerations involving a potential testnet reset or introduction of a new signet network. Michael Folkson outlines how a tool that migrates existing legacy wallets to descriptor wallets might work.

In some cases, you might not want privacy, but transparency with Monero. 19937 adds a new standalone bitcoin-util executable and miner script for mining signet blocks, making it easier to create and maintain new signet networks. Payment secrets are supported by all LN implementations and will eventually be made compulsory by C-Lightning; logging which payments are using payment secrets makes it easier for the developers to know when it’s reasonable to make that change. However, the higher the expiry is, the more time a payment could become temporarily stuck in an open channel (either by accident or deliberately). With low fees, however, comes customer service that’s not as established as rivals’, with support tickets and chat help, but no phone support. Of course, actual enforcement of the soft fork will depend on it gaining broad support among users-and users may decide to use an alternative activation mechanism. After Bitcoin Core developers finish working on the upcoming 0.21 release, it’s likely that the results of this survey will help them choose the activation parameters that will be used for taproot in a subsequent release. ● Taproot activation survey results: Anthony Towns received survey responses from an unnamed set of 13 "smart dev-type people" about their preferences for a soft fork activation mechanism to use with taproot.

● Backdoored VM images: a user on Reddit posted about losing funds after using an AWS image that came with a Bitcoin full node already installed and synced to a recent block. Anchor outputs also provide greater security because, if feerates do increase beyond what was predicted, the node can fee bump its commitment transaction. You (or a watchtower acting on your behalf) can then activate an emergency protocol to recover most of the secured funds. People can view or copy NFTs, but there is only one unique NFT that belongs to the buyer and is stored on the blockchain and secured with the same energy-intensive proof of work process. Below you can find all the necessary information you need about our selected bitcoin faucets. 742 improves the signer API by providing per-transaction information necessary for the signer to perform additional checks and provide a signature. A delegated signer can always spend the UTXO onchain without needing permission from the trusted third party, arguably making statechains less trusted than federated sidechains. This week’s newsletter summarizes posts to the Bitcoin-Dev mailing list about payjoin adoption and making hardware wallets compatible with more advanced Bitcoin features. This week’s newsletter contains a warning about backdoored VM images.