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. On August 13th, the group announced that they will be disbanding. 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). 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. 6810 begins using receiving payments to taproot outputs in almost all of the wallet’s automatically-generated output scripts. 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. In brief, for each possible terminal state of a contract-e.g., Alice gets 1 BTC, Bob gets 2 BTC-DLCs currently require creating a separate signature adaptor for that state.
Zhao also summarized a separate discussion on a gist which examined allowing transactions to suggest a descendant limit to use. 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. 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. This is the “modern” way, allowing the package to be directly imported into frontend projects with full typescript support. CHECKTEMPLATEVERIFY opcode. Also included is our regular section describing 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. Binance P2P trading. A peer-to-peer crypto trading platform like LocalBitcoins or LocalCryptos that supports payments via WeChat, AliPay, Bank Transfers, and QIWI. 194, silent payments make it possible to pay a public identifier (“address”) without creating a public record of that address being paid.
Several other developers, including authors of popular wallets, have been discussing other details of the proposal, including creating an address format for it. Money launderers often use sophisticated techniques to create complex chains of crypto transfers that cover their tracks, the FATF and the International Monetary Fund have said. 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. However, it’s worth keeping in mind that Bitcoin has only been around for a little more than a decade, and remains a highly speculative asset. However, there are suggestions of hourly time frame market manipulation, and Bitcoin remains range-bound daily. She reports that the main concept discussed was attempting to bound the maximum amount of resources used for secret info relaying transactions and their replacements, such as by limiting the number of related transactions that get relayed within a certain amount of time. Some signatures are still used, but the number is greatly reduced. The ideas were still being actively discussed as this summary was being written.
TXHASH opcode to specify which parts of a spending transaction should be serialized and hashed, with the hash digest being put on the evaluation stack for later opcodes to use. Instead, Fournier suggests that the thousands of possible states be created using CTV in a tapleaf which commits to the outputs to put onchain. ● Unevicted signature: a signature for a public key corresponding to the shared public key of the whole group minus the public keys used in the eviction outputs. CTV commits to outputs using hashes, so parties can compute all the possible state hashes themselves quickly and on-demand, minimizing computation, data exchange, and data storage. The ratio of all hashes over valid hashes is D x 4,295,032,833, where D is the published “Difficulty” figure.). During this time, Bitcoin led the charge to a valuation of nearly $20,000 per coin in 2017, but then its value steadily declined over the course of 2018 and settled in the range of $3,500 to $4,000 for quite some time.