Bitcoin Sign up or log in to customize your list._ Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top up vote 1 down vote favorite 1 I recently converted from Chakra Linux to Opensuse 13.1 without formatting the home partition (I took a chance) and didn't have to do the usual reloading of email, documents and bitcoin started working straight away after I installed it from opensuse repo.Chakra installation had bitcoin-qt 0.8.6 and opensuse loaded bitcoin-qt 0.9.1.So, basically, it found the files in the home partition and seemed to carry on from there.I do have a backup from before the conversion.Bitcoin 0.9.1 did add a quite a few blocks before the error.So, maybe it wasn't the transition to opensuse that did it.Now the wallet is six days behind.Here is quote from debug.log.It is 'catching up' from block 297123.2014-04-23 20:59:35 ProcessBlock: ACCEPTED 2014-04-23 20:59:45 UpdateTip: new >best=000000000000000087be011f611f80fd4d3d917780a27850fb878512f492f828 >height=297123 log2_work=78.143683 tx=37308919 date=2014-04-22 09:43:51 >progress=0.993196 2014-04-23 20:59:45 ProcessBlock: ACCEPTED 2014-04-23 20:59:56 ERROR: CScriptCheck() : >447f1be22db9cca6b7539a66b54f99ea11c1c0316a72915d34d8a1c86d00ebcf >VerifySignature failed 2014-04-23 21:00:03 EnvShutdown exception: Invalid argument (22) 2014-04-23 21:21:02 CheckForkWarningConditions: Warning: Large valid fork found forking the chain at height 297123 >(000000000000000087be011f611f80fd4d3d917780a27850fb878512f492f828) lasting to height 297131 >(00000000000000004866bff18fa3e4378486920d6b9dc7f332f9f0bc18bd247e).

Chain state database corruption likely.Any suggestions on how I should proceed?bitcoin-core error database up vote 5 down vote A signature check failed for a valid transaction.This likely indicates a CPU or RAM problem with the system you're running on (even though you don't see regular errors in normal operation, Bitcoin does so many computations during validation that it's likely to see them more).boston magazine bitcoinThe result of this is that bitcoind marked the chain this transaction was in as invalid, and rejects new blocks in it.bitcoin vps europeTo rebuild your database, you can start the client with the -reindex flag (if you exit while rebuilding, it will pick up where it was stopped on the next run).ethereum portfolio

One workaround that helps in some cases is running with -par=1, making validation only run in one thread.This seems to reduce the load enough to make some CPUs not cause errors anymore.Your Answer Sign up or log in Sign up using Google Sign up using Email and Password Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service.bitcoin transactions statsNot the answer you're looking for?earn litecoin for freeBrowse other questions tagged bitcoin-core error database or ask your own question.litecoin cpu mining how toComments Merged Merged Sign up for free to join this conversation on GitHub.bitcoin starter kit

Already have an account?Sign in to comment You signed in with another tab or window.Reload to refresh your session.You signed out in another tab or window._ Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top up vote 3 down vote favorite I've had Bitcoin-QT running for about six total hours, and the rate at which it's catching up is glacial at best.bitcoin mining widgetIt takes about an hour to advance a week, which would make the process take about 4 days to complete.1 bitcoin to dogeIt didn't take nearly this long on my PC; I started and finished the process while my Mac was still running.I'm running Bitcoin-Qt v.0.10.1 64-bit on a 2011 MBP, 8 GB of RAM, on 10.10.4.Is this normal, or is there something wrong?blockchain bitcoin-core mac up vote 1 down vote Sadly Bitcoin-Qt's (and bitcoind's) default DB cache size is very small for systems like yours.

You should definitively add -dbcache=4000 (use 4GB of RAM for UTXO-set-database [etc.] cache).This should speedup your sync significant.up vote 0 down vote By the sounds of things and your fix, I would say that you had a blockchain created by an earlier version of Bitcoin-QT and something in the migration process in making that work with newer versions is causing it to take longer than to download the whole blockchain fresh with the latest versions.It's always advisable to keep a backup of wallet.dat (so you don't lose access to your wallet) but you can dump the rest of the application support directory which is mostly blockchain.Browse other questions tagged blockchain bitcoin-core mac or ask your own question.nning a “full node” can easily take more than a week to sync on a quad-core computer with fast Internet connection and SSD.If you have a very old computer, it may never sync because the files seem to get corrupted often after a week or two of trying.Therefore I highly recommend to not use Bitcoin Core as a wallet until after you know what you are doing.

Bitcoin Core offers better privacy and security at a very high cost (in terms of syncing).Users who simply want to try out bitcoin should not use Bitcoin Core, but rather start with a fast, lightweight client like:Or just use it on a mobile device, eg:You can explore Cold Storage options if you really need strong security, but do that after using a lightweight option with small amounts and learning about how Bitcoin works.For cold storage, here are some good options: - The first Open, secure, crowdsourced hardware wallet.- The has some elegant and unique features (eg: on-device PIN input, FIDO support) and is less expensive than the Trezor.- Expensive, but seems about as good as Trezor, a few novel improvements made via large screen.- BIP38 Paper wallet.See "Going offline" instructions here: Print Offline Tamper-Resistant Addresses.Offline-created cold-storage, encrypted paper wallets are good (if done right) and can be made for free.They work great for savings, but are more difficult to spend from and should never be reused after being spent once.You can even create a cold-storage key for ultimate security.