Convert 7500 Bitcoin to US Dollar using latest Foreign Currency Exchange Rates. Using a lisp-style approach seems an improvement in general to me. This should be done in the Secure Element if possible to avoid physical compromission, but would be a strong improvement versus a day-to-day laptop in any case. Proposed improvement: The HW should display the Bitcoin Script itself when possible (including the unlock conditions). It’s anonymous: It is possible for a user to have multiple Bitcoin addresses. Unfortunately, programming at scale requires multiple programmers speaking the same language. Going further, most of these protocols require to follow a specific signing order (typically the “clawback” first, then the regular spend path) so adding a way to check that a “clawback” has been signed first, with the same input, would be very helpful. In protocols where clawbacks are at all necessary, often the counterparty can have an advantage / can steal if the clawback is not broadcast in a timely manner, thus the software that is corrupted by the counterparty can be corrupted to simply not broadcast the clawback. This requires the hardware device to maintain some state in order to remember that the clawback has been signed before.
My post on HW devices for Lightning (which you already linked) contains a suggestion to use a Merklized persistent data structure to maintain state for the hardware device, with a majority of the state storage on the trust-minimized software. A particular advantage of lisp-like approaches is that they treat code and data exactly the same — so if we’re trying to leave the option open for a transaction to supply some unexpected code on the witness stack, then lisp handles that really naturally: you were going to include data on the stack anyway, and code and data are the same, so you don’t have to do anything special at all. If we were to adopt this, obviously we shouldn’t call it “chia lisp” anymore, since it wouldn’t work the same in important ways. Homoiconicity means that one can manipulate code just as easily as the data, and thus LISP macros are a trivial extension on the language. Bitcoin is a decentralized system, it means it doesn’t have any central hub or any insinuation like banks etc that controls the amount of Bitcoin.
If you use another device this means another code will be generated so be cautious. That way they can put their liquidity to use somewhere else that is more productive for the rest of the network. This homoiconicity greatly tempts LISP programmers to use macros, i.e. programs that generate other programs from some input syntax. I heartily endorse LISP — it has a trivial implementation of `eval` that is easily implementable once you have defined a proper data type in preferred-language-here to represent LISP datums. Other digital systems were Bendix’s ADC-1000 Digital Air Data Computer (1967) which was “designed to solve all air data computations at a rate of 75 times per second”, Conrac’s 3-pound solid-state air data computer (1967), Honeywell’s Digital Air Data System (1968), and the LSI-based Garrett AiResearch F-14 CADC (1970). Nonetheless, the gear-based Bendix CADC provides an interesting reverse-engineering challenge as well as a look at the forgotten era of analog computing. If you don’t assume the computer on which the transaction is crafted is compromised, then you don’t need a hardware wallet. Outstanding hardware Trezor and Ledger are two crypto wallets that incorporate cutting-edge security features.
By contrast, chia lisp has fewer opcodes than Simplicity’s jets, has feasible approaches to low-impact soft forks to increase functionality, can be used with only two levels of abstraction (lisp with macros and the opcodes-only vm level) that seem not too bad to understand, and (in my opinion) doesn’t seem too hard to implement/maintain reasonably. Pretty much all the opcodes in the first section are directly from chia lisp, while all the rest are to complete the “bitcoin” functionality. You cannot buy Bitcoin Gold directly on Coinbase, so you will need to buy Bitcoin first. Buy Bitcoin Worldwide does not promote, facilitate or engage in futures, options contracts or any other form of derivatives trading. Trend trading is where crypto investors decide to buy or sell particular currencies based on whether their price is moving up or down. LocalBitcoins is a Finland-based service that facilitates the over-the-counter trading of local currency in exchange for Bitcoins. Here are various resources that will direct you to best places for finding wallets, stores that accept bitcoins, exchanges for trading Bitcoin, and Bitcoin news, prices, charts, guides, and analysis among other information. The best way to do so would be to lift this Script to a more user-friendly format such as a MiniScript Policy display, but anything would be better than an “address”.
