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OpenSSL has been the source of previous vulnerabilities in Bitcoin Core (e.g. Heartbleed and non-strict signature encoding) and much effort over the past five-plus years has been invested into eliminating it as a dependency. The second RPC will verify a signed message from another node either using a pubkey provided by the user or by confirming the message is signed by a pubkey belonging to any known LN node (e.g. a node in the set returned by the listnodes RPC). The first RPC will sign a message that can be verified by someone with your LN node’s public key. ● Taproot review: starting the first week of November, several Bitcoin contributors will be hosting a series of weekly meetings to help guide people through review of the proposed bip-schnorr, bip-taproot, and bip-tapscript changes. So far, Johnson Lau has proposed one technique. The expected commitment is four hours a week for seven weeks, with one hour each week being a group meeting and the other three hours being your own independent review of the proposals.

If the first 18 months of the activation period passes without activation (but also without any blocking problems being discovered), new releases can enable this option by default for the remaining 24 months of the activation period. Andrew Chow lists several considerations regarding public keys and quantum resistance, including: the need to reveal the public key during spending, the large number of bitcoins in outputs with known public keys, and numerous ways which public keys are exposed outside of just transacting due to not currently being treated as secrets. The first presentation was given by Bitcoin Optech contributor Mike Schmidt, and focused on transaction fees and ways to mitigate costs and user confusion. Given that a very large percentage of daily Bitcoin transactions are deposits to exchanges, we would then expect wallets and services that don’t provide bech32 sending support to quickly fall out of favor with users. In this monthly feature, we highlight interesting updates to Bitcoin wallets and services. It’s important that the paper wallets are securely stored (you can even make backup copies and store them in different locations). A QR Code (it stands for "Quick Response") is a mobile phone readable bar code that can store website URL's, plain text, phone numbers, email addresses and pretty much any other alphanumeric data.

Users should check the Binance website for a list of supported countries before using the app. If you are new to 2FA, you’ll need to download the Google Authenticator mobile app and then scan the QR (or enter the secret key) in order to get a 1-minute changing 6-digit code. ● Help test release candidates: experienced users are encouraged to help test the latest release candidates for the upcoming versions of Bitcoin Core and C-Lightning. This week’s newsletter requests help testing release candidates for Bitcoin Core and LND, youtu.be tracks continued discussion about the proposed noinput and anyprevout sighash flags, and describes several notable changes to popular Bitcoin infrastructure projects. CAT. Hopefully the discussion will be able to settle the major unresolved issues related to noinput and help get this proposal on track for inclusion in a subsequent soft fork. ● Discussion of soft fork activation mechanisms: Matt Corallo started a discussion on the Bitcoin-Dev mailing list about what attributes are desirable in a soft fork activation method and submitted a proposal for a mechanism that contains those attributes. Experienced users are encouraged to help test the software so that any problems can be identified and fixed prior to release.

Corallo also worries that using BIP8 from the start of a soft fork deployment gives the impression that the developers of node software get to decide the rules of the system. Anyone wanting to participate should RSVP soon so that the organizers can estimate the total number of participants and start forming study groups. All developers interested in these features which may be added to Bitcoin in the future are encouraged to review the study material, especially developers participating in the taproot review described in last week’s newsletter. And at another meeting a few weeks after last year’s storm, the governor quizzed him about how the industry could help stabilize the grid. ● Help test LND 0.8.0-beta-rc2: experienced users of LND are encouraged to help test the next release. 64 where LND could only be upgraded from a maximum of one major release back. 40) but older LND nodes and some other implementations have continued to use 144 as their default. Have you read An Introduction to ERC-20 Tokens? Satoshi seems to have forgotten to remove it, since sha.h is not used anywhere.