This week’s newsletter includes our regular sections with the summary of a Bitcoin Core PR Review Club meeting, a list of new software releases and release candidates, and descriptions of notable changes to popular Bitcoin infrastructure software. This week’s newsletter includes our regular sections summarizing popular questions and answers from Bitcoin Stack Exchange, announcing new software releases and release candidates, and describing recent changes to Bitcoin infrastructure software. If you prefer listening to audio rather than reading the weekly Optech newsletter, Max Hillebrand of World Crypto Network has recorded readings of every newsletter to date-providing a total of more than 6 hours of technical news about Bitcoin so far. He described a series of constraints that could be placed on the looping to ensure they didn’t use any more CPU or memory than Bitcoin Script and tapscript can currently use-but which would reduce bandwidth by eliminating the need to include repeated code in scripts. Traders can even create their strategies without even having much knowledge about coding. Traders purchase assets to hold for extended periods (generally measured in months). The remainder of the purchase price will be paid with debt raised from global banks.
The U.S. Justice Department launched an investigation into possible price manipulation, including the techniques of spoofing and wash trades. Commonly known as BUSD, it is approved by the NY State Department of Financial Services. With that said, some successful traders run high quality paid communities with additional services such as special market data. The exchange also has supporting programs that help traders make investment decisions. Leverage trade at Binance Futures platform allows the traders to open positions which are bigger than their crypto assets capital. This isn’t expected to be directly useful, but creates a tool the libbitcoinkernel project will leverage to produce a library other projects can use to validate blocks and transactions using the exact same code Bitcoin Core uses. For example, if an attacker can stuff extra data into the witness and still satisfy the spending conditions, they can lower the transaction’s feerate and negatively impact its propagation. For example, the policy or(and(older(21), pk(B)), thresh(2, pk(A), pk(B))) has two spending paths: it can always be spent when both A and B sign, or after 21 blocks when just B signs.
24304 adds a new demo bitcoin-chainstate executable that can be passed a Bitcoin Core data directory and a block, which it will validate and add to the data directory. Today, these four users can create a P2TR (taproot) output whose keypath spend allows them to use a protocol like MuSig2 to efficiently spend that output if they all participate in creating a signature. Finally, composition allows multiple parties to combine complex spending conditions and guarantee the resulting script’s correctness without fully understanding all of them. In addition, Binance offers an API that allows you to connect your account to any programmed trading bot or application and have them trade on your behalf in automating strategies by automatically responding to signals and events (taking advantage of arbitrage opportunities across exchanges, etc.). 2117 adds support for processing onion message replies in preparation for supporting the offers protocol. ● LDK 0.0.110 adds a variety of new features (many covered in previous newsletters) to this library for building LN-enabled applications. ● NthKey adds bech32m send capabilities: iOS signing service NthKey added support for taproot sends in the v1.0.4 release. ● What is the largest multisig quorum currently possible?
● Allocate time to test Bitcoin Core 0.17RC4: Bitcoin Core will soon be uploading binaries for 0.17 Release Candidate (RC) 4 containing the same patch for the DoS vulnerability described above. ● Mining stale low-difficulty blocks as a DoS attack Andrew Chow explains that assumevalid and more recently nMinimumChainWork help filter out low-difficulty chain attacks. The article specifically finds that that the share of renewables that power the network decreased from 41.6% to 25.1% following the mining crackdown in China during the Spring of 2021. Miners previously had access to a substantial amount of renewables (during a limited part of the year) when they were still in China (i.e. hydropower during the wet season in the summer months), but this was lost when they were forced to move to countries such as the U.S. A sane node must be valid and its script semantics must match its policy, be consensus-valid and standardness-compliant, only have non-malleable solutions, not mix timelock units (i.e. use both block height and time), 바이낸스 2FA OTP and not have duplicate keys. 5306 updates multiple APIs to consistently use the name “msat” for millisatoshis and also returns JSON values in those fields as numbers. 910 updates the LN specification with two changes.