Curioso documento che analizza svariate monete dal punto di vista del pre mining ecc oppure di devs che nascondo qualcosa... insomma gente che sostanzialmente può dumpare tanto per farla breve.
=premined]http://www.devtome.com/doku.php?id=a_massive_investigation_of_instamines_and_fastmines_for_the_top_alt_coins&s[]=preminedLa lista si divide in tre parti:
Guide For The Three CategoriesExtreme Caution: Bad coins for investment or usageObvious and proveable scammish behavior such as self evident instant mines, super quick block halving, unannounced premining activity, or premines that represent unusual amount of coins
Most statistics tend towards unfair early adopter benefit. Very little benefits long term, fair usage.
Questionable coinsQuestionable mining statistics; probably not rigged to be early adopter benefit, but the data suggests such. One cannot prove or lacks further evidence of the potentially get rich quick scheme.
Has some good statistical mining qualities and one to two stats that are not so good.
Coins who have some instamine but their total mined coins makes the instamine less significant. Usually older coins.
Okay coinsCoins that equal or improve upon Bitcoin's mining protocol (in terms of how long the coins mining extends into the future meaningfully); no evidence of instamines, (unruly) premines, or any shady activity or protocol.
Only very minor knocks against the coin's mining start.
Nel documento ci sono tantissime monete, inserisco qua alcuni coins per fare un esempio:LITECOIN: (Extreme Caution: Coins That Are Bad Ideas For Investment or Usage)
type of algorithm: scrypt
PoW onlyDespite being Bitcoin's supposed silver to it's gold, Litecoin does not escape from this analysis kindly. In the first 96 hours, we see a well defined curve that demonstrates instamining occurred, showing 450,000 LTC being created in less than 6 hours.
There are roughly 27,700,000 Litecoins in existence, which equates to about 1.5% of the total coins that have been created since October 2011. Some people make that case that Litecoin has gone through numerous rises and crashes in the price that could have brought out these initial investors. This is true. The fact that almost 3 years has past since it's creation and the amount of quickly mined coins is approaching less than 1% of the total coins in existence is also worth mentioning. One can still question the intentions of the creator of this coin, but the reality is the threat of the currency crashing because of instaminers selling is less and less likely. We consider this to be a questionable coin/okay coin (one foot in each category) based on this start but probably less risky now that it barely registers as a percentage point of fastmining.
BLACKCOIN: (Extreme Caution: Coins That Are Bad Ideas For Investment or Usage)
type of algorithm: scrypt
PoW initally (closed)/ PoS
10,000 coins generated per block 14)
block 1: 2014-02-24 06:00:25
block 1000: 2014-02-24 22:10:19
block 10000: 2014-03-01 18:38:46
Blackcoin is not readily searchable on its blockchain 15) if you desire to look at their early history. (The first page shows around 50 of the most recent transactions, but deeper searches only bring up one block at a time). Blackcoin is also a PoW/PoS hybrid, so one cannot simply take the number of blocks X the number of coins per block.
One can readily see, however, very infrequent blocks of PoS in the beginning. For instance, this author manually scanned blocks 1,000 to 1,099 and saw only PoW blocks. Rather than scan all one thousand blocks individually, we then jumped to block 2000 and scanned individually again. blocks 2000-2100 were all PoW. 3000-3100 also contained zero PoS blocks and only PoW blocks. The trend continues into blocks 4000-4099, none are PoS and all 100 of them are PoW.
What can we conclude from this data? Considering we NEVER saw a PoS occur, let us take on the basic PoW formula of number of coins per block X blocks up to block 4100. 10,000 x 4100 = 40,000,000. Now since we only viewed 10% of the block chain up to 4100, we can throw in 50 PoS as a safeguard. The PoS blocks witnessed much later in the blockchain, for example, show the production of 1-5 coins, a nominal amount, instead of the PoW block of 1000 BC. For each block that should have been a PoW (as we counted to get 41,000,000) we need to minus 1000 BC. 50 blocks x 1000 BC = 500,000 BC that we are going to minus from our total as an estimate of some possible PoW blocks that we didn't see but counted for in our total. So this puts our total at 41,000,000 - 500,000 = 40,500,000 BC at around block 4100. This is not definite but rather and estimate. (Edited to add: it has been reported that the first 5000 blocks were all PoW. If this is the case, then 5000 x 1000 = 50,000,000 BC were mined in 3 days)
Thankfully, people take screencaps and save them to the internet archive over at
www.archive.org. We have the following snapshots of coinmarketcap.com with Blackcoin on them which helps to back up our case that some 40 million BC were created in 3 days.
The first day we have record that Blackcoin appeared on
www.coinmarketcap.com is February 28th.
By the next day, March 1st, we see this…
And by March 7th we see a total number of Blackcoins that is close to the amount today in late April, the 74-75 million range…
For those of us keeping track, Blackcoin was launched Februrary 24th at 6:00 (no indication is given what time zone this is) 19). Block 4100 commenced on February 27th at 6:15. In 3 days…Blackcoin produced some 40 million coins (or 50 million). Now they rest at around 75 million coins and only PoS occurs from here.
This is photographic evidence that supports our brief searching of the blackcoin blockchain. The majority of the first 10000 blocks were PoW, and since they were all producing 1,000 BC, the bulk of the coins were made within one week. Anyone should be highly skeptical of the start of this coin. Who would think that the creator of this coin is thinking about enriching your pockets and not theirs?
To this end, who cares about their PoS option? They dished out thousands of blocks at 1000 BC a pop for three days. You would have to hold 100,000+ BC to be able to mint that kind of Blackcoin, which at today's rate would cost you in the neighborhood of $15,000 to obtain 100,000 BC. Are you sure you want to lock in that coin for minting now?
DARKCOIN: (Extreme Caution: Coins That Are Bad Ideas For Investment or Usage)
derived from Quark
type of algorithm: blake, bmw, groestl, keccak, jh, stein
PoW and PoSThe following data and time stamps were collected from the Darkcoin blockchain 33).
Block 1: 2014-01-19 Time: 3:54:41
Block 1000 : 2014-01-19 Time: 4:33:39
Block 2000: 2014-01-19 Time: 06:25:47
Block 3000: 2014-01-19 Time: 09:10:16
Block 3250: 2014-01-19 Time: 11:22:11
Looking at this data, we see that Darkcoin was mined with 500 DRK generated per block from the get go. From block 1 to at least block 3250, according to their blockchain, they were still producing 500 coins each block. The transition from 500 to 277 coins per block occurs between 3250 and 3500 but this author did not see the necessity of getting the exact moment of halving. Simple math shows that 3250 blocks multiplied by 500 coins a block is 1,625,000 Darkcoins created between the times of 3:54 and 11:22 on January 19th, 2014. As of today there are around 4,300,000 DRK in existence, making this a pretty hefty instamine. The Darkcoin website expects around 22,000,000 DRK to be created. That means in less than 8 hours, almost 5% of the Darkcoins that ever will be created spawned in that 1/3 of a day. It's safe to say Darkcoin has left it's investors in the dark on this one.
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