Please use our new /Horizen Subreddit ZenCash is a private, decentralized, and reliable platform for communications, transactions, and publishing. In production using zero-knowledge proofs for anonymous transactions with an encrypted memo field stored on the ZenCash blockchain.
Welcome to IOTAmarkets! -- IOTA is a quantum-resistant distributed ledger protocol launched in 2015, focused on being useful for the emerging m2m economy of Internet-of-Things (IoT), data integrity, micro-/nano- payments, and anywhere else a scalable decentralized system is warranted. IOTA uniquely offers zero fees, no scaling limitations, and decentralized consensus where users are also validators. The digital currency 'iota' has a fixed money supply with zero inflationary cost.
I'm trying to calculate a txn_id from raw txn_hex. The procedure works fine for legacy TXNs but gets non-expected results on Segwit TXNs. I compared this snippet of code to what txn_id was produced by Electrum and the blockchain.com TXN decoder:
Take in TXN in hex
Convert the hex to binarray
Double hash binarray
Reverse the resultant digest because of endianness
Display in hex.
t0 is my legacy testnet TXN and t1 is my segwit testnet TXN. Thoughts?
05-30 08:44 - 'Simple Excel Calculator to Track your Bitcoin Trading Profits using FIFO' (self.Bitcoin) by /u/pksoni removed from /r/Bitcoin within 195-205min
''' Spreadsheet is ready to calculate FIFO Profits up to 2000 transactions, which can easily be extended further by dragging the formulas as per your requirement. [Bitcoin Cryptocurrency FIFO Gain Excel Calculator]1 You will just have to put Transaction Type (buy or sale), Date Transaction, Bitcoin Quantity and Price. Sheet will display important data for every row:
FIFO Profit or Loss after every transaction.
Cumulative Cost of Bitcoin Purchased.
Cumulative Earning from Sell of Bitcoin.
Total Bitcoin Purchased, Sold and Balance after every transaction.
Highlights the rows for Buy and Sell transactions in Green and Orange colors.
You can set trading fees/commission in Currency or Percentage form.
You can purchase this tool from Eloquens.com marketplace for USD $10 only. LIFO (Last in First Out) and Google Sheet versions are also available. FIFO Profit Excel Calculator: [[link]5 LIFO (Last In First Out) Profit Excel Calculator: [[link]6 You can purchase it for Bitcoin or other cryptocurrency from [**[link]7 ''' Simple Excel Calculator to Track your Bitcoin Trading Profits using FIFO Go1dfish undelete link unreddit undelete link Author: pksoni 1: r*d**t.com/link/b*pal9/vi*eo/t0*d*vnz*a13*/p***er 2: www**loqu*ns.*om/*ool/3MdIA*/e*gin*eri*g/***pto*urrency-ex*el-templa*es/bi*coin-*rypto*urre**y-f**o-*r***t-***cula**r-for-taxatio* 3: www.*lo*uens.com/**ol/3B4lfy*X*eng***ering**ryptocu*re**y-excel-templat*s/bi*coin**r**to*ur**ncy*l**o-last**n-f*rst-out*Pr*f*t-calc*la*o*-fo*-taxa*io* 4: w*w.fifocalc***tor**om 5: w*w.eloquens*co***ool/3MdI*v/engi*eering*c*ypt*cur**n**-excel-t*m**ates/bitco*n***y*t*cu**en*y-fifo-**ofi*-c**cu**tor-for-taxat*on]^^2 6: ww*.el*quens.com/tool/3B4lfy9X/*ngin*er*n*/**yp*ocu*r*n****xcel**e*plates/bitcoin*c*yp*ocur*ency-l*fo-*ast-*n-first-out*Pr*fit-**l**l*t*r-f*r**axation*^*3 7: www.fifocalculator.com**]^^4 Unknown links are censored to prevent spreading illicit content.
Short answer If people are incapable of estimating the correct number logically, the only method to the answer is by genetic algorithm where cloud wisdom hopefuly takes time to solve and volatility is inevitable. Long answer Believe it or not, the valuation of a currency-purpose asset is in fact much easier than the valuation of a stock. To be a currency-purpose asset, a somewhat universal valuation opinion must be among the mass. For a stock, on the contrary, one needs to evaluate many factors such as marketing/product/… and people have different opinions about the possible gain of a stock. Every asset has a production cost, the piece of paper of stock certificate has little production cost. For currency-purpose asset, the production cost is thought to be independent of W-questions such as "who produces this asset", "where is this asset produced", "how many sale a producer has done", …etc. It is this property that the so-called universal opinion is formed. Money is also supposed not to have capital gain like stocks such as "I will have a generous dividend next year", so there is indeed not a "calculate the present value of all future gain by having a stock" but a "global understanding of the cost to fake/rollback/cheat a trust" for currency-purpose asset. Let
K be the global energy power for bitcoin
T be 600 seconds
F the average block fee. Let's say it is 1.9977.
C(t0, t1) be the average block reward from t0 to t1. For convenience, t0 and t1 are described in term of 210000 blocks, currently we are around t=2.41 . Therefore C(0,1)=50, C(1,2)=25, C(0, 2.0)=37.5.
P be the cost for 1.0 coin
I be the initial fixed cost of the mining rigs per 1.0W. Because the number of rigs is proportional to the energy power, therefore reasoning the fixed cost per mining rig is the same as reasoning as if cost per 1W rig.
Story 1 Assume all miners calculate the production cost in the coming 8 years and users are not investors. Let's express price in real term so that weird fiat monetary policy has nothing to do with the following argument we shall focus on. The equation for cost of the production is 0 = KI + sum(KT - ( F+C(t, t+2)) * P, from t to t+2) Therefore P = K * (T + I/210000 * 2 )/(F + C(2.41, 4.41)). Note that C(2.41, 4.41)=7.4515 so the miner will sell at least at this price. A user, as a non-investor who never cares P, may buy the coin from the miner and sell the coin for a merchant service/goods who will adjust the service bitcoin-nominated price with P accordingly. For your curiosity, by current data, the P by Story 1 is 3.49444E+11 Joule. Is the Story 1 reallistic ? Not at all. What about a miner who is thinking to run the business till t1=3 only. Then C(2.41, 3)=12.5 and this miner can undercut other miners in Story 1. Every users, as non-investors, do not care any bit about P because the user will always need to commit the same real-term service price from the merchant. Being undercut means death, so all the miners will split the pricing logic so that two P numbers, one for time 2.41 to 3, the other for 3 to 4.41; for your curiosity, C(3, 4.41) = 5.3413 Story 2 As the miners competition settled down, the P is not constant any more; there will be two P numbers, one, being lower, for time 2.41 to 3, the other, being higher, for 3 to 4.41. Is the Story 2 reallistic ? Not at all. What about a user who starts noticing that the P will increase and being investors is a good deal. While this user may observe the increasing of P empirically but never logically understanding, knowing nothing about math and miners' plan, this user will speculate between market price of P; he might buy at 5000 and see it explode at 10000 and take profit at 6000 (in USD term) and has no idea the 5000 may be much lower than the correct number. Should the P is pricing at the correct number so that there is no room between the two P, speculators are gone and people are comfortable the stable price with store-of-value and media-of-exchange. Is the Story 2 realistic ? Not at all. What about a hobby miner wants to be investor too and starts mining from time 2.41 to 3 and never sell all the coins for users but only pay partially little for the electricity while price bullish and keep the rest coins as investment for himself after time 3 ? Story 3 Being also speculation. While other users investors may increase the volatility (mainly because being without fundamental knowledge but rather TA or market-sentiment orientated traders), this move will shrink the room between the two P and therefore decrease the volatility of P. So the ratio of time 2.41-to-3 miners to time 2.41-to-4.41 miners increases up to the two P are equal then no more new miners of such plan. Is the Story 3 realistic ? Not at all. What about there are miners/investors for all possible time frame t0 to t1 in the future ? Let
K be the permanent miners who plan to run forever.
Kt be the miners who will only run from time t to t+1. Therefore the total energy power from time t to t+1 is Kt + K
Story 4 Therefore, the only setting where no arbitrage for miners and investors is such that P=KT/F and the graph of (Kt + K ) / K is like this. We know T and F and the ratio of Kt/K, but what is exactly K ? No one really knows. K could be low or high, one can only guess by observation. We know the difficulty is proportional to hash rate and hash rate is proportional to Kt and K. So you can see the graph of difficulty to have a guess of K. Should the two graph looks similar, we know people are finally logical and feel delight. By the difficulty graph and miners' time frame to amortize fixed cost so that it can be averaged out, taking the current global hash as K and updating it as time goes by may be a good guess. For your curiosity, currently KT/F is 2.13007E+12 Joule. BUT. It is not logical to assume people are all logical. If people are never logical and never investors, a graph of KT/( F + C(t, t+1) ) which is increasing till KT/F shall resemble the graph of P. If some people are logical and some are not, the empirical graph will be hysterical around and between. I tend not to comment about pricing in public. But since I know wall street and I know what wall street knows, feeling sad about the mass, bear me. I thought these information could leak to the mass if there were future contracts after each halving date, but no luck for such contracts. Credit: not me. I knew this long after someone knew it.
Do both overt and covert ASICBOOST violate a key architectural requirement of proof of work?
From page 3: https://download.wpsoftware.net/bitcoin/asic-faq.pdf "...the computation of proof-of-work must be progress free, that is, the proof-of-work calculation at time T should not depend on any part of a calculation at time T0 < T." Does ASICBOOST violate this architectural requirement? It seems that it does since it reuses an IV (Input Vector) fed to SHA-256. If this is correct then it is a strong argument to disable both overt and covert ASICBOOST.
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