Notable changes this week in Bitcoin Core, Core Lightning, Eclair, LDK, LND, libsecp256k1, Hardware Wallet Interface (HWI), Rust Bitcoin, BTCPay Server, BDK, Bitcoin Improvement Proposals (BIPs), and

Lightning BOLTs. After a recent update to Rust Bitcoin introduced stricter parsing of signature fields, a discussion ensued whether a signature field in a PSBT may hold a placeholder, or only valid signatures were permissible. This prevents payments from failing just because the sender hasn’t heard about a recent policy update. This week, developer w0xlt posted to the Bitcoin-Dev mailing list a tutorial for creating silent payments for the default signet using a proof-of-concept implementation for Bitcoin Core. EVICT received a moderate amount of discussion on the mailing list as of this writing, with no major concerns noted but also roughly the same seemingly low level of enthusiasm which greeted the TLUV proposal last year. Ring confidential transactions to obscure the amount sent. In the case of contracts using multiple oracles (e.g. multiple price data providers for an exchange rate contract), there’s a further simplification and reduction in the amount of data required. You can obtain Bitcoin by receiving it as a payment for your goods or services or by purchasing BTC from a cryptocurrency exchange using a local currency like the US dollar or the euro.

Bitcoin is often called a protocol, which means it is like a foundational layer that other services, technologies, companies, etc. can use to build. He believes the key to success when it comes to investing in cryptocurrency is to diversify your risk by investing in a pool of cryptocurrencies that are vetted by financial professionals, just like your 401k accounts or index funds. This would allow Alice, Bob, and Carol to spend the group UTXO at any time without Dan’s cooperation by creating a transaction with the output Dan previously signed, providing Dan’s signature for that output, and providing a signature Alice, Bob, and Carol dynamically created over the entire spending transaction (which would cover the fees they chose to pay and allocate the remaining funds however they chose). If they need to close more than 10 channels, they can use the funds received from closing one channel to close the next channel in a domino effect. Because there is sometimes more wind power than transmission lines can handle, bitcoin mining situated near wind farms can use their excess energy. Optional message extensions using Type-Length-Value (TLV) records allow omitting unnecessary details when the protocol defaults are being used (for more information about TLV, see the notable code and documentation changes section below).

A34. If you donate virtual currency to a charitable organization described in Internal Revenue Code Section 170(c), you will not recognize income, gain, or loss from the donation. After this change, Windows and macOS code signing remain the only missing piece before Guix builds reach feature-parity with Gitian builds. This week’s newsletter asks for comments on the miniscript language, publishes our final bech32 sending support section, includes popular Q&A from the Bitcoin Stack Exchange, and describes several notable changes to popular Bitcoin infrastructure projects. This week’s newsletter describes experimentation by developers working on silent payments and includes our regular sections with summaries of new releases and release candidates plus notable changes to popular Bitcoin infrastructure software. Welcome to the second Bitcoin Optech Group newsletter! ● Optech schnorr/taproot workshops: Optech is hosting workshops in San Francisco (September 24) and New York (September 27) on schnorr signatures and taproot. ● LND 0.14.2-beta.rc1 is the release candidate for a maintenance version that includes several bug fixes and a few minor improvements.

Additionally, this version of Electrum supports bech32m. The first allows Short Channel Identifier (SCID) aliases which can improve privacy and also allow referencing a channel even when its txid is unstable (i.e., before its deposit transaction has received a reliable number of confirmations). Many contracts define a large number of possible terminal states, such as a contract about the future price of bitcoins which specify prices rounded to the nearest dollar and need to cover several thousand dollars worth of price range even for a relatively short-term contract. According to Investopedia, when bitcoin was first mined in 2009, mining one block would earn 50 bitcoins. It adds for invoice metadata which can be used by other programs (and potentially future versions of LND) for stateless invoices and adds support to the internal wallet for receiving and spending bitcoins to P2TR keyspend outputs, along with experimental MuSig2 support. This is useful in Lightning when locating a spending transaction after a channel funding transaction has been spent or examining why an RBF transaction failed to broadcast by fetching the conflicting transaction. EVICT is focused on use cases where more than two users share ownership of a single UTXO, such as joinpools, channel factories, and certain covenants.