The only thing you would need to recover your coins after the swap is your wallet.dat file.

bee7.

Dear fellow members,

thanks to the Chicago's effort we have recovered a bit longer history than I had initially (the chain I had is a sub-chain of the one Chicago got). As nobody posted anything different I assume this is the maximum we could achieve in this respect. I already set up the block explorer with that chain at http://explorer.graincoin.net so you could explore it without the need to download and re-index the blockchain bootstrap file yourself. However, we will decide shortly where to host that file and make it available for your reference.

Also, I would like to mention that Chicago being an experienced in cryptocoin related development did many things for the sake of good of Graincoin during past days and I am happy that now we could have not a single developer but form a team backing the coin development.

The team is not closed: this is an open source project, so anyone who feels himself capable and willing to participate is welcome.

As no objections were expressed to my proposal on further steps in development we will start to implement the coin swap according to the scheme described.

At time of coin swap we will release a new wallet based on more recent bitcoin client software. Most likely the new wallet will be based on bitcoin v0.12.3 code to adsorb as much development as possible. Definitely it will not be a v0.13 code or later as it makes no advantage for us: we will not hit block limit any soon. Although the segwit introduced in v0.13 also solves transaction malleability problem, we would prefer to postpone its possible integration until we see it really needed for Graincoin.

The development tree is moved to the new location at github (please see https://github.com/graincoin-project/graincoin ) to allow better level of team collaboration than the previously used single user account allows.

bee7

Edit: the OP is partially updated

Edit2: edited for clarity

Hi, Chicago,

tbh, I only have the tech part planned: as I mentioned numerous times I am a software engineer and I am a complete n00b in marketing.

So, I call again for everybody's involvement in business development and promotion.

bee7

The blockchain file I received from the community member I mentioned has the last block minted at Dec 28 20:01:27 2015 UTC.

Unfortunately, I did not finalize the ABE block explorer code fixes yet to allow it properly treat Graincoin chain specifics so I am not ready to make it available online. Also it will took some time for ABE to build the index. So, I expect all this to be completed in three to four days.

 

Thanks, I really have been thinking on the topic a lot.


It's true if most coins get to the exchanges wallets and(or) coin get lack of interest.


This is is bad idea: it makes POSWallet holding huge amount of coins (I hate the exchanges for the same reason but this is unavoidable evil)


This is not good solution as well: if anyone is allowed to mine an empty block then this opens a lot of possibilities to manipulate the block chain, otherwise if, say, me would generate an empty blocks signed with above mentioned private key then this put the chain under centralized control. From my point of view it is much more correct for a dev to stake than to PoW-mine: the main idea of the PoS is to make the process more energy-efficient.

The longest blockchain is ~2.2M+ blocks (see below).

Community.

In October '15 my host got crashed and I had very big problems in real life so when I got some time to look into the thing the network was already down for several months. One of the latest supporters repeatedly asked me in PMs for almost a year to bring up the network back. He kindly sent me his blockchain file that was a bit longer than mine. As I stated already it has 2.2M+ blocks with total supply ~1.2bln coins. I will bring up a block explorer with that chain shortly, so you could explore it.

At the same time, I found many discussions on BCT regarding possible vulnerabilities of PoS and hybrid coins, please read these two threads:

https://bitcointalk.org/index.php?topic=1709776.0
https://bitcointalk.org/index.php?topic=551861.0

Although I am skeptical about "nothing-at-stake" issue, I see a real problem with low PoW rewards: the emission schedule made it really not profitable to mine Graincoin anymore. There is a real risk of double-spend possibility with low PoW difficulty (i.e. one produces a row of PoW blocks with transaction in a first block and then publishes a PoS fork that overrides the original transaction)

Taking to account that the protocol targets to produce at most four PoW blocks each twelve blocks we still have to mine ~30k blocks with average reward of 6 coins a block, then 65k blocks (259k/4) with average reward of 3 coins and 65k blocks with average reward 1.5 coins. Then the reward would be 1 coin a block forever. Roughly speaking, the mining would produce approximately 500k coins in the following 7 months counting from now and then it would generate 21900 coins a month.

So, I am for switching to pure PoS now (looking at the BlackCoin example that behaves just fine for more than 2 years being pure PoS).

There is a couple of additional topics I would like bring to discussion. The first one is target time. Presently it is 30 seconds a block and produces ~0.5Gb of blocks data a year and ~1.2Gb of indexing database a year. IMO this makes no real advantage: my experience shows that most exchanges and payment processors picks such a number of required deposit(payment) confirmations that your account get credited (the payment get confirmed) roughly one hour after the transaction is mined. Thus, I propose to increase the target time to 2.5 minutes - this would lower disk and memory usage.

The second thing is the existing blockchain, i.e. history: most blocks starting from July '14 are empty (have no transactions apart from coinbase and coinstake) and only consume RAM. So I propose to swap the chain. To make the swap fair and verifiable and to bootstrap the pure PoS network I am going to proceed as follows:
The minimum coinage to stake is 10 days. That means that any TXO is eligible to stake after it get 10 days old. In case of a fresh chain the network has to produce somehow 5760 blocks (if the target time is 2.5 minutes) before the first stake block could be minted. Currently the chain has approximately 1M unspent transaction outputs. These 5760 blocks are enough to evenly distribute 1M unspent transaction outputs in coinbase transactions thus reproducing the existing total supply belonging to original owners. To allow anyone to (manually) verify that any particular TXO in the new chain exists in the original chain and the amount matches, the scriptPubKey of each TXOs in these first 5760 PoW blocks would be composed this way:



here <txid> is an id of transaction in the original chain, <n> is an output number in that tx and <hash> is a destination address from the original tx.

All these blocks will be signed with a keypair the public part of which will be hardcoded into CheckBlock function. Also, CheckBlock function would check at block 5760 that total supply is equal to the one of original chain and will not accept PoW blocks after height 5760. These 5760 blocks will be PoW-mined myself (with no extra reward) and then the PoS should drive the network.

Please share your thoughts, objections and ideas.

bee7

I will try to manage this in the closest future.


I am trying to develop some ideas, but have nothing to share to the moment.

Я плачу банку за обслуживание счетов. Нехило, кстати, в год получается. Исходя из трафика, который генерирует мой биткоин-клиент, работающий 24х7, за хранение битков, на сумму больше, чем в совокупности лежит на моих счетах в фиате (среднесуточный остаток х 365), на их хранение в год я трачу меньше. Не надо мне указывать, что с ростом числа транзакций возрастет трафик: стоимость трафика неуклонно падает последние 20 лет несмотря на развитие потребления. И так и будет дальше. Про разность стоимостей собственно транзакций я уже с вами обсуждал. Не вижу смысла повторяться. Да, существует риск бана битка на уровне государства. Но ровно такой же риск бана существует и для отдельно взятого банка. Сумма "страховки" в 700тыр, и даже полтора ляма - это смешно. Остальное мне никто не вернет. С битком же, даже в случае бана я могу его конвертировать в фиат на территории другого государства, если что.

не ну детский лепет. Т.е. сейчас свифт забывает тут же о проведенной транзакции и ни хрена не хранит. А зачем собстна? Каму какое дело была ли транза фродулентна или нет. И вообще кому интересно, была ли транза. Главное, что в одном месте убыло, а в другом прибыло. А как - свифт никак ну не трогает. (здесь свифт нарицательное, читать нужно "вся МПС")

с рождения. Они к тому же еще перед новым годом все рубли вложили в телевизоры с холодильниками.

Вы вот всё тут спорите-спорите с пеной у рта: упадетнавсегданижеплинтуса-взлетитчерезнеделюв10500раз. Какая разница? Жизнь - это рулетка. Угадал вовремя - ты на коне. Нет - в жопе. Вот если б я в ноябре устроился работать в питерский Гугл, то в декабре мне пришлось бы выбирать: либо ехать в Цюрих (с оплатой перемещения), либо быть уволенным с выплатой компенсации по причине разрыва контракта работодателем в связи с внешними (не зависящими от меня) обстоятельствами, ну то-есть в любом случае в выигрыше, в зависимости от желаний. Бл*, киздец, ну почему я не был такой умный, что не пошел в ноябре работать в питерский Гугл!!!. Что мне теперь, разбиться лбом об монитор?
Так же и тут: угадал где, как и когда войти и в какой момент выйти - молодец. Но волосы на жопе драть из-за этого смысла нет.
Сорри за офтоп.

Swisscex managed to solve issues with the wallet but also announced the deadline:

авторитетные мнения специалистов, занимающихся анализом кибер-безопасности систем. мне с вами спорить не интересно. речь не идет о ломке виртуальных серваков, администрируемых криворукими лохами и во множестве наводнивших просторы сети. это всё вообще офтопик здесь. давайдасвиданья.

"99%" - фигура речи заменяющая собой "подавляющее большинство". Если интересно, пошукайте интернет сами - найдете массу авторитетных мнений на эту тему. Мне недосуг сейчас.

Hi,
ATM, there is no need to put addnode= into the conf file as the IRC seeding is working. Just for a case it might be worth to put the 204.45.207.186 (the address of block explorer). Regarding the swisscex. It seems they are trying to resync, but something goes wrong: during past few days I noted that their stats page reported heights lower than a few hours previously at least three times.

по статистике 99% всех взломов осуществляются "изнутри".

While the colour photography is known for the same time as b&w, the picture posted here is definitely a photoshop artwork.

send a PM to Miner-TE - he set up a private pool some time ago.

The explorer is up and running. I contacted the swisscex support - they reacted promptly: the daemon is alive now and catching up (it was ~20k blocks behind).

I contacted the hosting company in regard of the explorer's VPS, let's see what they say. Definitely, must not be the payment issue as they sent me the receipt for current period.