[I0C] I0coin - The Best Choice In Digital Currency

[cornhodlr]

I recently got my account back: https://bitcointalk.org/index.php?topic=5577262.0

Also: https://bitcointalk.org/index.php?topic=36425.msg454369#msg454369

- i0coin.org was the *original * domain for this coin, just a nostalgy thing.
- I don't have any amount left because I sold a lot back then, and anything that was still remaining was lost at some point in all those years changing computers so many times. I already checked all my backed up wallet.dat files and none is i0coin.

Thanks for clarifying above. Actually i0coin-0.12.0.1 was the most recent version as far as I am aware https://github.com/domob1812/i0coin/releases/tag/i0coin-0.12.0.1

[wiked1]

Well I am running version 0.12.0.1 and had it synced up to 5 years 40 weeks back with the executable files I had stored but it was taking ages and downloaded 120mb of data and only moved the chain by a week or so. It then hung there for a while so I thought I would shut it down and restart it only to show an error opening aking if I wanted to reindex the chain and go back to the very beginning like 2011 unprined chain or abort. Needless to say I aborted so shut it down.

I added the node in the .conf file and had to open it in notepad to do this so when I added it the file was renamed i0coin instead of i0coin. conf and wondering if that makes a difference as it seems to recognise it as a . conf file any regards.


Not sure what to do tbh.

[kr105]

Try downloading the blockchain package from izerocoin.org (use the mediafire link, the not pruned version) and place it on your %appdata%/i0coin/folder, then delete all the nodes on the conf file and use the node I provided above.

Let me know if it that works

[wiked1]

Try downloading the blockchain package from izerocoin.org (use the mediafire link, the not pruned version) and place it on your %appdata%/i0coin/folder, then delete all the nodes on the conf file and use the node I provided above.

Let me know if it that works

Hi only seeing this now but I tried it again from scratch and let it run for a few hours and it shut down by itself while it was trying to sync and now it says database is corrupt after opening it and when I clicked ok on it I was back to 2011 so don't know what happened. I have downloaded maybe 3GB of data so I can't use my connection for much more today as I am at its allowance limit with my provider.

I will try to look at it again tomorrow. What is the difference in downloading the blockchain off izerocoin site versus just running the wallet and letting it download it by itself because that package on the website looks to be over 2 GB and thats going to take me ages to download anyway?

[kr105]

Try downloading the blockchain package from izerocoin.org (use the mediafire link, the not pruned version) and place it on your %appdata%/i0coin/folder, then delete all the nodes on the conf file and use the node I provided above.

Let me know if it that works

Hi only seeing this now but I tried it again from scratch and let it run for a few hours and it shut down by itself while it was trying to sync and now it says database is corrupt after opening it and when I clicked ok on it I was back to 2011 so don't know what happened. I have downloaded maybe 3GB of data so I can't use my connection for much more today as I am at its allowance limit with my provider.

I will try to look at it again tomorrow. What is the difference in downloading the blockchain off izerocoin site versus just running the wallet and letting it download it by itself because that package on the website looks to be over 2 GB and thats going to take me ages to download anyway?

Well, this is a 15 years old blockchain with over 4.5M blocks on it so it is big. The izerocoin.org package saves a lot of time as you don't need to check all of the blocks from genesis plus you save a big chunk of bandwidth because the folder is compressed unlike downloading block by block from the network.

The current uncompressed blockchain folder is 12.3GB, just to keep on mind.

In a few weeks I'll release a fast-sync light wallet at some point for this exact reason.

[Hermes Mercury]

Excuse me for asking, but what motivated you to get involved with I0C again?

[kr105]

Excuse me for asking, but what motivated you to get involved with I0C again?

That is a long history but let say that one morning I realized that "Catcoin" (one of my other creations) was alive and it was kept running by a small community (that is another history for another day).

Then I did some research on my oldest baby, i0coin, and I saw that it was on life support but still somewhat alive.

Fast forward a few weeks, I now have the mission to bring it back to life and now that I'm a grown-up adult, I can keep maintaining it for a long time (unlike back in the day )

[Hermes Mercury]

Good luck. Can we expect a block explorer in the coming weeks? There used to be chainz.cryptoid, but it was discontinued some time ago due to budget constraints.

I was wondering why there wasn't a coin meme for cats, now I know the answer! I0C is quite interesting, let's see how far this goes. Anyway, welcome back, dev!

[kr105]

Yes! Catcoin is the first and true original cat meme coin, created only a few days after dogecoin.

Now, back to i0coin:

There is already a block explorer on my dev server, I will release it very soon

[wiked1]

Try downloading the blockchain package from izerocoin.org (use the mediafire link, the not pruned version) and place it on your %appdata%/i0coin/folder, then delete all the nodes on the conf file and use the node I provided above.

Let me know if it that works

Hi only seeing this now but I tried it again from scratch and let it run for a few hours and it shut down by itself while it was trying to sync and now it says database is corrupt after opening it and when I clicked ok on it I was back to 2011 so don't know what happened. I have downloaded maybe 3GB of data so I can't use my connection for much more today as I am at its allowance limit with my provider.

I will try to look at it again tomorrow. What is the difference in downloading the blockchain off izerocoin site versus just running the wallet and letting it download it by itself because that package on the website looks to be over 2 GB and thats going to take me ages to download anyway?

Well, this is a 15 years old blockchain with over 4.5M blocks on it so it is big. The izerocoin.org package saves a lot of time as you don't need to check all of the blocks from genesis plus you save a big chunk of bandwidth because the folder is compressed unlike downloading block by block from the network.

The current uncompressed blockchain folder is 12.3GB, just to keep on mind.

In a few weeks I'll release a fast-sync light wallet at some point for this exact reason.

Well I have downloaded the whole blockchain and deleted the old blocks and chainstate and replaced with the full blockchain package but am still 8 years and 9 weeks behind so have no idea how long this is going to take to sync. The pruned version brought me up to only 5 years behind so why bother with the full blockchain download?

[kr105]

do you hold any I0C already? if not, maybe it is a better idea to wait some time until the new wallet is released

[wiked1]

do you hold any I0C already? if not, maybe it is a better idea to wait some time until the new wallet is released

Yes I do hold i0coin. If I had kept the bitcoin instead of buying i0coin with it I would be rich today instead of poor

[kr105]

Same! On my recovered Bitcoin wallet from 2012 my last transaction was sending out 247 BTC to some address

I will compress an updated blockchain folder and upload it somewhere, so you can have an easier time syncing.

[wiked1]

Same! On my recovered Bitcoin wallet from 2012 my last transaction was sending out 247 BTC to some address

I will compress an updated blockchain folder and upload it somewhere, so you can have an easier time syncing.

Holy smoke, those were the days. Yeah I would probably jump off a cliff if I looked at how I lost every cent I had on altcoins. Maybe you can take over ixcoin too 

[wiked1]

This just ain't working for me at all. I used about 500 mb of data and it only moved the chain by about 2 weeks so I don't think I would have enough memory on my device at that rate because there seems to be some type of memory bloating issue and it would use up too much data and take months or longer to sync by the looks of things. Not sure what's going on because I am still only at block 2371195 and to make it all the way to block 4699548 or wherever its currently at could take months/years and many gigabytes of data. Maybe there is some strange type of memory issue but I  havent seen this on any other wallet I use. I will wait until there is an up to date blockchain because it just doing its thang here. Could be a fault my end of course.

[hornetsnest]

... all the way to block 4699548 or wherever its currently at

https://chainz.cryptoid.info/ioc/  Block height is approx 5573412



Some interesting links below for anyone who likes a bit of history about izerocoin. Pity it wasn't called zerocoin or just 0coin.



https://bitcointalk.org/index.php?action=profile;u=140234

https://bitcointalk.org/index.php?topic=276483.0  https://bitcointalk.org/index.php?topic=268228.0


I0coin Resurrection Official Website https://i0coin.snel.it/   https://github.com/rsnel/i0coin/






http://blog.zorinaq.com/bitcoin-inspires-copycats-first-tangible-good-sold-for-i0coins/

For an inexplicable reason, i0coin, although still very much an underground cryptocurrency with a high risk of failure, appears to have picked up a small number of supporters. Initially, it was forked by kr105, and later modified and enhanced by fusebox and ArtForz who had to reset the network difficulty by consensus after it increased very quickly, scaring its miners away. This is a failure mode that can theoretically affect Bitcoin too, but its probability decreases as its user base diversity and size increases.

What is killing I0coin? And why doesn't it kill NMC,IXC,DVC? (an answer)

https://bitcointalk.org/index.php?topic=224744.msg2830598#msg2830598



I0coin is killed by:

    I0coin by keeping all auxpow's in memory
    slow adoption by regular pools
    P2Pool
    high blockrate


Why?

    I0Coin stores all auxpows in memory, because auxpows are included in CBlockHeader and ALL CBlockHeaders are stored in memory, Bitcoin up to at least v0.8.3 does this also.
    Due to normal pools having little support for I0Coin (as opposed to eg. NMC), most of the mining is done in P2Pool
    P2Pool has very large (8kB as opposed to 200B) coinbase transactions (each auxpow has a copy of the full coinbase transaction in the bitcoin block with which it is associated)
    Due to the high blockrate, i0coin's memory usage grew faster than namecoin, ixcoin, devcoin GOTO bullet 2 and repeat ad infinitum


Endresult: i0coin's memory usage grows by at least 8kB per block, which is 8kB*60/1.5*24*365 = 2.7GB per year...  Sad

Solution:

Port I0coin to v0.8.3. I did that https://github.com/rsnel/i0coin/tree/i0coin-0.8.x (I started with doublec's v32509 and merged sucessively higher versions of bitcoin into it). It seems to work fine. (it can do transactions, it can mine blocks that get accepted eg 01f017f6e86c5de539b0137677e6d096bbd2b05d9859c4c25c14c73579644dc8, which is a nVersion=2 block because it includes its nHeight in the coinbase script) On its own, this port uses about 500MB more memory than v32509. (I hoped to solve the problem by doing this port, but that didn't work...)

Then I proceded by, and I agree that this is a bit dirty, just not storing auxpows. This breaks two things:

    response to getheaders request doest not return auxpow part of header (not that bad, because the Satoshi client never issues getheaders requests)
    CBlockIndex:CheckIndex, it just returns true because it doesn't have access to auxpow (see comment in source)


I implemented this in branch dirty-trick. Please try it out, and run this version besides your own i0coind (it uses about 321MB) and keep an eye on it.

Better solution:

Retrieve auxpow's from disk in the two problem cases.

Further work:

    compile on other os's, only tested "make -f makefile.unix i0coind"
    fix logo's in qt client
    stabilize/test 0.8.3 port
    when to enable BIP30?
    much much more
    irc seeding is removed in bitcoin, include good seednodes and setup DNSSeed for i0coin


Greetings,

Rik.

https://bitcointalk.org/index.php?topic=224744.0

For those of you who don't know, i0coin was one of the older alternate cryptos that had a decent backing before being abandoned by it's developer. Among other issues, a crippling memory leak eventually made the client unusable and the coin died.

I'm currently in the process of fixing all these issues and bringing this coin back to life. To that end, I need people who still have the i0coin blockchain to help me beta test the new client. Inquire if interested!

Disclaimer: I own zero i0coins so this project is at the low end of my priorities list.

https://bitcointalk.org/index.php?topic=224744.msg2363663#msg2363663

Huh? Forking the chain is a worse bug than simply using a lot of RAM. Geistgeld uses a lot of RAM too. It might even really just be due to all the dust transactions, since all available to be spent all live in RAM don't they? So most likely the massive amount of dust causes a massive amount of RAM to be used. I think dust transctions may have already been dis-allowed so maybe just paying people to consolidate all their "dust" could help decrease the size of the in-RAM txout set.

-MarkM-

Quote from: Hazard on June 04, 2013, 01:08:31 AM

Merged mining will come, it's just not my primary concern right now. I'm currently trying to fix a coin that I don't even have the blockchain for Cheesy I'm sure you see how that could be problematic.

 

YOu cannot do profiling looking for memory leaks etc if you cannot run the client, so you just need the current client and blockchain and a debugger / profiler, no hard fork no new bitcoin code just find the damn bug and fix it.

But better might be to help get the merged-mining.patch applied cleanly to the latest bitcoin code.

Then all the merged mined coins, not only I0Coin, can upgrade to that.

Fixing some ancient version is pretty much a waste of time since whatever you end up with will be obsolete almost as soon as the applying of the patches to latest bitcoin is complete, because once that happens I0Coin, IXCoin, CoiLedCoin, GeistGeld, GRouPcoin, DeVCoin, heck maybe even NaMeCoin will all be upgraded using that so will all be up to date properly.

Whatever bug there may be evidently is in no other coin except possibly GeistGeld, and certainly not in the latest bitcoin code, so is going to go away anyway as soon as this "Mergecoin" repo is ready.

-MarkM-