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1  Bitcoin / Electrum / Re: Unexpected magic characters on: January 08, 2018, 06:58:16 PM
Hi all,

it seems this problem has been identified

https://github.com/spesmilo/electrum/issues/3131

Let's hope it gets fixed.

I'm on a mac os as well (10.5.x)

Regards.

spiccioli
2  Economy / Games and rounds / Re: 1000 BTC GIVEAWAY! From your friend rekcahxfb on: August 03, 2016, 07:23:18 PM
Let's see how it ends  Huh

1Fee23KnWEpBqTLDoLKtXHE1TCzQy4W4Ph

Regards

spiccioli
3  Economy / Service Announcements / Re: [ANN] JeffColo - Miner Hosting / Colocation / VPS - West Coast (DC) on: July 19, 2016, 09:21:36 AM
I've had 31 SP20s hosted with JeffColo for more than a year (just sold them all) and his service has been top notch the whole time.

I will surely host with him again in the future if S9's price comes down and/or some new miner gets sold to the public at large.

spiccioli
4  Bitcoin / Hardware / Re: Bitmain New Miner S7-LN 2.7T @697W discussion (Not official) on: May 17, 2016, 12:28:34 PM
I think that this purchase would be a disaster.

With this they can also replace their ageing ATX PSUs... Wink

spiccioli
5  Bitcoin / Hardware / Re: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs on: May 08, 2016, 12:27:11 PM
As of May 4, 2016 Spondoolies-tech has ceased operations.

Very sad news indeed.

Best wishes for the future, Guy.

spiccioli
6  Bitcoin / Group buys / Re: [lee group]1150$! The group buy of hosted bitmain S7 @4.73T online on 27th Jan!! on: February 24, 2016, 05:26:11 PM


The main reason i want to go via this proxy is that i have one central web interface (the stratum-proxy has a decent one) under my control where i can tell Lee Team once to point my miners to the proxy as first pool and change all pool priorities, worker settings and more myself after that. It's really a win-win.

mxnsch,

if your proxy is outside of China you'll end up against the Great Firewall of China and your miners will not be able to reach it (stably at least).

So you'll need to have a pool inside China at least as a backup.

I'm mining with Lee since the beginning of 2014 and in the end I was forced to use Chinese pools to have reliable mining (I was using Slush's proxy running in a datacenter in Europe).

Regards.

spiccioli
7  Bitcoin / Hardware / Re: Community Miner Design Discussion on: February 23, 2016, 07:31:04 AM
I know that exchanging or "core" charges may complicate a project that aims to be very simplistic and straight forward.  It may be possible to have a "complete" miner and a blade for the DIY guy but that will depend a lot on the final design from Sidehack. 

Having stackable boards requiring just a raspi to run or boards you can put in a wooden frame like in the good old days of GPUs would be a plus, IMHO.

Or something like the m/h boards of the first bitfury rigs; maybe they can run with just a fan blowing on them.

spiccioli


8  Economy / Computer hardware / Re: WTS - 25 Antminer S5's hosted (will possibly sell without hosting) on: January 10, 2016, 09:55:40 PM
It has 2 1/2 months remaining or about 10 weeks

Are there any other expenses? What about PSUs? Are they included in hosting cost?

Regards.

spiccioli
9  Economy / Computer hardware / Re: WTS - 25 Antminer S5's hosted (will possibly sell without hosting) on: January 10, 2016, 09:40:47 PM
I appreciate the interest from people, here are a few comments to clarify.

I do not wish to break up the 25 units into smaller batches.
At current difficulty and hosting fees, the miners generate approximately $1300 USD profit per month. That is calculated using 1155*25= 28.875 Th with fees being $0.065/kWh

Bottom dollar on the 25 units with hosting - $7000 USD in BTC
Bottom dollar without hosting is $5750 USD plus shipping costs. 

Thanks

Hi kilo17,

when does the prepaid hosting end?

Regards

spiccioli
10  Other / MultiBit / Re: Multibit classic, error in protobuf on: December 29, 2015, 09:15:23 PM
Hi Jim,

you know it already for sure, anyway I think my problem comes from here:

https://github.com/miracle2k/protobuf/blob/master/java/src/main/java/com/google/protobuf/CodedInputStream.java

see comment to method setSizeLimit(), it is just a hardcoded limit.

Regards.

spiccioli
 

Hmm, if you were only using 0.5.18 then it probably wouldn't be a format thing.

It is a pretty big wallet you have there and the error message seems to be related to the wallet size:
com.google.protobuf.InvalidProtocolBufferException: Protocol message was too large.  May be malicious.  Use CodedInputStream.setSizeLimit() to increase the size limit.
   
Classic isn't being actively developed now though I will raise this as a bug.
We don't produce releases of Classic very often now so it's not going to get fixed quickly.

I would recommend moving your wallet to blockchain.info using:
https://multibit.org/en/help/v0.5/help_movingAWallet.html

If you use an older backup of your wallet you should be able to open it and export your private keys.

edit: https://github.com/bitcoin-solutions/multibit/issues/744
11  Other / MultiBit / Re: Multibit classic, error in protobuf on: December 26, 2015, 10:11:28 AM
Hi Jim,

Thanks for your answer, I'm on 0.5.19 and I've been using it since it came out.

Before it I was using 0.5.18 and that wallet has been in use since a couple of years ago with daily movements.

So why is it still using the old format?

Isn't it enough to open it with 0.5.19 to have it converted to the new format?

Does its size, 68 megabytes, pose any problem in handling it?

Thanks


spiccioli






The very early versions of MultiBit (up to 2012 I think) used a different format for the wallet (Java serialisation rather than protobuf).
Only the protobuf version is supported now.
For a while the old versions were read in and converted to protobuf when written out so that users that updated via each version would not have noticed.


The old versions are still available on the multibit.org website if you have deleted the older version you can reinstall it.

Probably the best thing to do is:
+ using the old version of MultiBit Classic, empty the wallet to somewhere else.
+ install the latest version of Classic (or try out MultiBit HD) and create a new wallet.

Very old versions of MultiBit Classic don't even connect to the Bitcoin network any more (as things have changed over the years). In this case then:
+ Export your private keys.
+ Use the most recent versio of Classic and import them. Or import them to blockchain.info using the help article on how to do this.


12  Other / MultiBit / Multibit classic, error in protobuf on: December 25, 2015, 10:09:59 AM
Season's Greetings to all,

today I had to send some coins with multibit classic, latest version, sadly when starting it throws out this error message:

Code:
com.google.bitcoin.store.UnreadableWalletException: Could not parse input stream to protobuf
at org.multibit.store.MultiBitWalletProtobufSerializer.readWallet(MultiBitWalletProtobufSerializer.java:395)
at com.google.bitcoin.core.Wallet.loadFromFileStream(Wallet.java:572)
at org.multibit.file.FileHandler.loadFromFile(FileHandler.java:115)
at org.multibit.network.MultiBitService.addWalletFromFilename(MultiBitService.java:410)
at org.multibit.controller.bitcoin.BitcoinController.addWalletFromFilename(BitcoinController.java:137)
at org.multibit.MultiBit.main(MultiBit.java:433)
at org.multibit.MultiBitInExecutableJar.main(MultiBitInExecutableJar.java:98)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
at com.install4j.runtime.launcher.MacLauncher.main(Unknown Source)
Caused by: com.google.protobuf.InvalidProtocolBufferException: Protocol message was too large.  May be malicious.  Use CodedInputStream.setSizeLimit() to increase the size limit.
at com.google.protobuf.InvalidProtocolBufferException.sizeLimitExceeded(InvalidProtocolBufferException.java:110)
at com.google.protobuf.CodedInputStream.refillBuffer(CodedInputStream.java:755)
at com.google.protobuf.CodedInputStream.isAtEnd(CodedInputStream.java:701)
at com.google.protobuf.CodedInputStream.readTag(CodedInputStream.java:99)
at org.bitcoinj.wallet.Protos$TransactionOutput.<init>(Protos.java:3992)
at org.bitcoinj.wallet.Protos$TransactionOutput.<init>(Protos.java:3956)
at org.bitcoinj.wallet.Protos$TransactionOutput$1.parsePartialFrom(Protos.java:4054)
at org.bitcoinj.wallet.Protos$TransactionOutput$1.parsePartialFrom(Protos.java:4049)
at com.google.protobuf.CodedInputStream.readMessage(CodedInputStream.java:309)
at org.bitcoinj.wallet.Protos$Transaction.<init>(Protos.java:6622)
at org.bitcoinj.wallet.Protos$Transaction.<init>(Protos.java:6530)
at org.bitcoinj.wallet.Protos$Transaction$1.parsePartialFrom(Protos.java:6720)
at org.bitcoinj.wallet.Protos$Transaction$1.parsePartialFrom(Protos.java:6715)
at com.google.protobuf.CodedInputStream.readMessage(CodedInputStream.java:309)
at org.bitcoinj.wallet.Protos$Wallet.<init>(Protos.java:10884)
at org.bitcoinj.wallet.Protos$Wallet.<init>(Protos.java:10813)
at org.bitcoinj.wallet.Protos$Wallet$1.parsePartialFrom(Protos.java:10994)
at org.bitcoinj.wallet.Protos$Wallet$1.parsePartialFrom(Protos.java:10989)
at com.google.protobuf.AbstractParser.parsePartialFrom(AbstractParser.java:200)
at com.google.protobuf.AbstractParser.parseFrom(AbstractParser.java:217)
at com.google.protobuf.AbstractParser.parseFrom(AbstractParser.java:223)
at com.google.protobuf.AbstractParser.parseFrom(AbstractParser.java:49)
at org.bitcoinj.wallet.Protos$Wallet.parseFrom(Protos.java:11717)
at org.multibit.store.MultiBitWalletProtobufSerializer.parseToProto(MultiBitWalletProtobufSerializer.java:568)
at org.multibit.store.MultiBitWalletProtobufSerializer.readWallet(MultiBitWalletProtobufSerializer.java:362)
... 12 more
10:40:19.275 [main] ERROR org.multibit.file.FileHandler - com.google.bitcoin.store.UnreadableWalletException Could not parse input stream to protobuf

It had no problems a few days ago to update the same wallet and send some, wallet size is 68711158 before starting MB.

What can I do now?

Even the rolling backup gives the same error and it selects an old backup from beginning of this year which, apart from requiring a few days to completely sync, makes me really nervous, what if I can't load this wallet anymore?

Regards.

spiccioli

ps. running on

Code:
10:40:16.515 [main] INFO  org.multibit.MultiBit - Starting MultiBit at 25 Dec 2015 09:40:16 GMT
10:40:16.517 [main] DEBUG org.multibit.MultiBit - java.runtime.name = Java(TM) SE Runtime Environment
10:40:16.517 [main] DEBUG org.multibit.MultiBit - exe4j.moduleName = /Applications/MultiBit Classic.app
10:40:16.517 [main] DEBUG org.multibit.MultiBit - sun.boot.library.path = /Applications/MultiBit Classic.app/Contents/PlugIns/jre.bundle/Contents/Home/jre/lib
10:40:16.517 [main] DEBUG org.multibit.MultiBit - java.vm.version = 24.80-b11
10:40:16.517 [main] DEBUG org.multibit.MultiBit - i4j.jreBundle = /Applications/MultiBit Classic.app/Contents/PlugIns/jre.bundle
10:40:16.517 [main] DEBUG org.multibit.MultiBit - gopherProxySet = false
10:40:16.517 [main] DEBUG org.multibit.MultiBit - java.vm.vendor = Oracle Corporation
10:40:16.517 [main] DEBUG org.multibit.MultiBit - java.vendor.url = http://java.oracle.com/
10:40:16.517 [main] DEBUG org.multibit.MultiBit - path.separator = :
10:40:16.518 [main] DEBUG org.multibit.MultiBit - java.vm.name = Java HotSpot(TM) 64-Bit Server VM
10:40:16.518 [main] DEBUG org.multibit.MultiBit - file.encoding.pkg = sun.io
10:40:16.518 [main] DEBUG org.multibit.MultiBit - user.country = IT
10:40:16.518 [main] DEBUG org.multibit.MultiBit - sun.java.launcher = SUN_STANDARD
10:40:16.518 [main] DEBUG org.multibit.MultiBit - sun.os.patch.level = unknown
10:40:16.518 [main] DEBUG org.multibit.MultiBit - install4j.exeDir = /Applications/
10:40:16.518 [main] DEBUG org.multibit.MultiBit - java.vm.specification.name = Java Virtual Machine Specification
10:40:16.518 [main] DEBUG org.multibit.MultiBit - user.dir = /Applications/MultiBit Classic.app/Contents/java/app
10:40:16.518 [main] DEBUG org.multibit.MultiBit - java.runtime.version = 1.7.0_80-b15
10:40:16.518 [main] DEBUG org.multibit.MultiBit - i4j.ownBundlePath = /Applications/MultiBit Classic.app
10:40:16.519 [main] DEBUG org.multibit.MultiBit - java.awt.graphicsenv = sun.awt.CGraphicsEnvironment
10:40:16.519 [main] DEBUG org.multibit.MultiBit - java.endorsed.dirs = /Applications/MultiBit Classic.app/Contents/PlugIns/jre.bundle/Contents/Home/jre/lib/endorsed
10:40:16.519 [main] DEBUG org.multibit.MultiBit - os.arch = x86_64
10:40:16.519 [main] DEBUG org.multibit.MultiBit - java.io.tmpdir = /var/folders/40/xh586sdj5j182s7j8xclm_w80000gp/T/
10:40:16.519 [main] DEBUG org.multibit.MultiBit - line.separator =
 
10:40:16.519 [main] DEBUG org.multibit.MultiBit - java.vm.specification.vendor = Oracle Corporation
10:40:16.519 [main] DEBUG org.multibit.MultiBit - os.name = Mac OS X
10:40:16.519 [main] DEBUG org.multibit.MultiBit - apple.laf.useScreenMenuBar = true
10:40:16.519 [main] DEBUG org.multibit.MultiBit - proxySet = false
10:40:16.519 [main] DEBUG org.multibit.MultiBit - sun.jnu.encoding = UTF-8

13  Economy / Service Announcements / Re: [ANN] Bitfury ASIC sales in EU and Europe on: December 17, 2015, 11:36:57 AM
https://i.ytimg.com/vi/YRCzEqkCoiM/maxresdefault.jpg

Will be reopening the shop soon! The chip is crazy and amazing.

Anyone interested in H-cards with 16nm chips?

the price matters. we've learned a lot since summer 2013.  Wink

but thank you for a sign to the retailers which are able to risk money.

Yeah,

first units were sooo overpriced and I know from experience... sob Wink

spiccioli
14  Bitcoin / Group buys / Re: [OPEN] [Group Buy + Group Hosting] 3.5TH/s Avalon6 + Platinum PSUs! on: November 15, 2015, 05:41:09 PM
Well then, the deadline's come and gone and we didn't get enough interest. Too bad, I was looking forward to picking up a few Avalon6 units for myself! Perhaps we can try again with a later batch.

Those who reserved units please PM me with the address you would like your deposits refunded to.

It's a pity.

Hosting fees are really good and even PSU lease is an idea which should be tested, but units are way overpriced, much more so with BTC at current level.

At 450 USD per BTC it would have been very different (well, if Avalon does not increase their price at 2000 USD each).

spiccioli
15  Bitcoin / Group buys / Re: [OPEN] [Group Buy + Group Hosting] 3.5TH/s Avalon6 + Platinum PSUs! on: November 13, 2015, 01:56:37 PM
Yes you are correct, sorry I should have said that.  Are there any calculators take halving into effect?

Not that I'm aware of.

spiccioli
16  Bitcoin / Group buys / Re: [OPEN] [Group Buy + Group Hosting] 3.5TH/s Avalon6 + Platinum PSUs! on: November 13, 2015, 01:48:34 PM
Finsky,

your model doesn't consider, it seems to me, that at the start of next July there will be next halving.

spiccioli
17  Bitcoin / Group buys / Re: [OPEN] [Group Buy + Group Hosting] 3.5TH/s Avalon6 + Platinum PSUs! on: November 12, 2015, 07:55:40 PM
armedmilitia,

you said we have 10% discount on units from site's price.

They're priced at 13900,00 USD per 10 units, so their price should be around 1250,00 each at least from 10 units, I see them at 1300-1320 instead.

What am I missing?

Regards.

spiccioli


Found it Smiley

Controllers (Rpi aren't included).

spiccioli


Hmm, the price on the site was previously 14.4K, they must have changed it recently. But yes, we get the advantage of pi's.

Ah, ok, so now we're at 1251,00 USD plus as much RPis as we need and they're selling them at 75 USD each, so maybe we can source them elsewhere for less.

spiccioli
18  Bitcoin / Group buys / Re: [OPEN] [Group Buy + Group Hosting] 3.5TH/s Avalon6 + Platinum PSUs! on: November 12, 2015, 06:20:55 PM
armedmilitia,

you said we have 10% discount on units from site's price.

They're priced at 13900,00 USD per 10 units, so their price should be around 1250,00 each at least from 10 units, I see them at 1300-1320 instead.

What am I missing?

Regards.

spiccioli


Found it Smiley

Controllers (Rpi aren't included).

spiccioli
19  Bitcoin / Group buys / Re: [OPEN] [Group Buy + Group Hosting] 3.5TH/s Avalon6 + Platinum PSUs! on: November 12, 2015, 06:18:38 PM
armedmilitia,

you said we have 10% discount on units from site's price.

They're priced at 13900,00 USD per 10 units, so their price should be around 1250,00 each at least from 10 units, I see them at 1300-1320 instead.

What am I missing?

Regards.

spiccioli
20  Bitcoin / Group buys / Re: [Proposal] Mining Co-Op on: November 11, 2015, 05:38:55 PM
all profitability numbers are bogus anyway with btc being $380 one day and $295 the next.
the only play here is for halving-associated btc expected jump.
So, you accumulate coins like there is no tomorrow, then sell some.
If no jump, then profits would be marginal, if any.

The problem is that you spend 1600 using BTC now with the risk of having less BTC when price doubles...

The only play, IHMO, is hoping that difficulty slows down to 1 or 2% max per retarget, otherwise the risk of ending up with less BTC one year from now seems real.


Did ROI calculators a year ago predict that the S5's would still be worth what they are today? They haven't really depreciated much at all in fairness.  For quite a few generations now skeptics have doubted ROI, assuming that difficulty would drive hardware obsolescence.  And yet, those who have bought hardware for the past 12 months have done considerably better than those who have bought coin.  We have reached the point where you can factor equity into the purchase price of miners, unlike early generations of ASICs, and that is something that calculators do not include.

Don't forget that for a good half of 2015 difficulty moved very little, now it seems we're back at 4-5% increase each retarget.

Anyway, if, as it seems, there is a lower electricity cost available now.. well, let's redo again all our calculations and predictions and see what they give.

spiccioli
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