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Crypto Giant Binance Kept Weak Money-laundering Checks, Documents Show

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Sources familiar with Justice Department operations said it is as yet unclear whether this new probe will add impetus to the investigation into Binance or slow it down. There’s an open and actively-developed PR to the libsecp256k1-zkp project to add MuSig2 support. ● Kollider launches alpha LN-based trading platform: Kollider’s latest announcement details the derivative platform’s features including LN deposits and withdrawals plus LNAUTH and LNURL support. ● Spark Lightning Wallet adds BOLT12 offers: Spark v0.3.0 adds offer features including offer creation, sending offer payments, and pull payments. ● Muun wallet supports taproot: Muun wallet enabled taproot address support after activation occurred, including the ability for 바이낸스 [published on Nidoeire] users to default to taproot receive addresses. 1166 improves the default route scoring logic by penalizing channels where the payment HTLC amount would constitute more than 1/8th of the channel’s capacity. Andrew Chow notes that as more diverse and complicated scripts become more widely used and for separation of concern reasons, there is no taproot equivalent for xpub/ypub/zpub.

Whenever you trade, there will be some “dust” – a small balance left behind in your account wallet after the transaction. When the whitelist function is enabled, your account will only be able to withdraw to whitelisted withdrawal addresses. You can customize your settings and preferences to suit your needs, and you have access to higher withdrawal limits than unverified accounts. All signers have to agree on the protocol to use, so there may be a network effect where many implementations choose to use the same protocol. Discussing BIP141’s requirement that a witness program be 2-40 bytes, Kalle Rosenbaum brainstorms examples of potential use cases for a 2 byte witness program size. ● How could a 2 byte witness program make sense? Because there is no way to change a block, the only trust needed is at the point where a user or program enters data. Wuille also lists three techniques for infeasible-to-exploit nonce generation, two techniques that are broken, and points out there is a huge gap of techniques in between that are neither known to be secure nor broken. If there is a very powerful and strong downward trend in the market, and you think that the price of the asset will move down, you could place a buy order just below the support level and another buy order above the support level with an OCO order when there is a short position.

● bitcoinj adds bech32m, P2TR support: Andreas Schildbach added a commit for bech32m and another for P2TR support to the bitcoinj repository. ● libwally-core adds bech32m support: The 0.8.4 release of this wallet primative library includes bech32m support. Each use of multisigs is distinctively recorded to the block chain where surveillants can use them to make informed guesses about the wallet history and current balance of individual users. 3. When one of the wallets wants to spend the funds, it uses a PSBT-based workflow similar to what it would use with script-based multisig, but now two rounds of communication between signers are required. MuSig (also called MuSig1), which should be simple to implement but which requires three rounds of communication during the signing process. MuSig2, also simple to implement. MuSig-DN (Deterministic Nonce), significantly more complex to implement. Script-based multisigs increase in size as more keys and signatures are required, but multisignatures are a constant small size. ● Weak signature nonces discovered: a preprint paper by researchers Joachim Breitner and Nadia Heninger describes how they discovered hundreds of Bitcoin private keys by looking for signatures generated using nonces with less than the expected entropy of 256 bits. 4. The other wallets receive the PSBT and send a further updated PSBT with their own pair of random nonces to the other wallets, or to a coordinator who works trustlessly on behalf of the wallets.

The wallets then all update their versions of the PSBT with their partial signatures, sending the PSBTs to the other wallets or the coordinator. The proposer sends the PSBT with the nonces to the other wallets. ● Why is it important that nonces when signing not be related? This does require storing extra data and being very careful about ensuring your signing software or hardware can’t be tricked into unknowingly repeating part of the signing session. He recommends to “use xpriv/xpub along with some extra information indicating that the script to create is Taproot, (e.g. with a tr() descriptor)”. This week’s newsletter includes our regular sections describing how you can prepare for taproot, summarizing the latest releases and release candidates, and listing notable changes to popular Bitcoin infrastructure projects. This week’s newsletter provides information about the activation of taproot and includes our regular sections with summaries of changes to services and client software, new releases and release candidates, and notable changes to popular Bitcoin infrastructure software. Pieter Wuille provides mathematical breakdowns for how private key information can be leaked when signing twice with the same public key using: the same nonces, nonces with known offsets, and nonces with known factors.

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