Hi everyone, I am pretty new to the Bitcoin & Blockchain world. I am currently reading Mastering Bitcoin, but I have a doubt I can't solve.
Let me use an easy example:
Let's say there are only 2 mining nodes (A and B), which are both mining the block 5 to to add it to the chain.
Now, from what I have understood, the transactions the 2 nodes have in their block 5 can differ. E.g. the transaction "Alice buys a coffee for 5 BTC" can be in the block 5 that the node A is mining, but not in the block 5 that the node B is mining (e.g. because this transaction arrived later to the node B compared to the node A).
Now, if the winning node for this block is the node B, the transaction "Alice...." won't be stamped in the ledger.
When the competition for the block 5 is over, are the "loosing" nodes (in this case the node A) giving up all the transactions in the block they were working on? and take new transactions from the memory pool?
In this case, if the nodes start again mining for the block 6, the transaction "Alice...." will be in the block 6 for node B, but not in the block 6 for node A (node A has given up the transaction from the block 5)
What if node A wins the mining? Won't the transaction "Alice...." be lost forever?
Please correct me
Cheers
It's not the nodes that do the mining process right now, it's the pools of miners. Furthermore, (transactions *basically* have nothing to do with the mining process). Mining is simply discovering a hash that is valid. Then they'll ( most likely) choose the transaction with the highest fees until the block is filled up. If miner B is ( significantly) faster then miner A, all the transactions from miner b will be added to the blockchain, and as you said, none from miner A . So, if Alice wasn't chosen by miner B to be in the block, she will still be in the mempool. If miner A mines block 6, and Alice her transaction fee is high enough, there's a good chance miner A takes and puts her transaction in block 6. (node A has given up the transaction from the block 5) Miner A has given up looking for said hash, but the transaction still remains valid to be added in future blocks. It seems to me that you interpret it as if the transactions itself are "mined", or need significant work to be added into the blockckhain, however this isn't the case. |
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Hello, I have a wallet through bitpay. I also have a bitpay card. I’ve been using this for 6 months or so with no issues. I understand the recent fall off of bitcoin and the transactions clogged or full. Normally if I wanted to move 500usd from the wallet to the card it would be a 6-15 dollar fee. Now it’s wanting 100 or more. That’s just ridiculous. Will this ever go back to normal?? Bitcoin is recovering I see, but the transfers are still expensive. Any advice would be appreciated. Thank a lot in advance
Taking a quick look at the mempool,( the backlog of bitcoin transactions), i really wouldn't say so. https://blockchain.info/charts/mempool-sizeThere's still over 100.000 transactions waiting to be confirmed, which are heavily driving up the fees. You could maybe simply wait a little bit, sending it with less priority, or, try to contact a miner which will manually add your transaction into their block (something which accelerators such as https://pool.viabtc.com/tools/txaccelerator/ do.) Hello, I have a wallet through bitpay. I also have a bitpay card. I’ve been using this for 6 months or so with no issues. I understand the recent fall off of bitcoin and the transactions clogged or full. Normally if I wanted to move 500usd from the wallet to the card it would be a 6-15 dollar fee. Now it’s wanting 100 or more. That’s just ridiculous. Will this ever go back to normal?? Bitcoin is recovering I see, but the transfers are still expensive. Any advice would be appreciated. Thank a lot in advance
There are forces at work that want bitcoin to become a sort of "Digital gold," which cannot be used for transactions, due to high fees. They are / have destroyed the bitcoin ecosystem. Other coins can move in and fill the gap, but meanwhile payment processors merchants and many users are very, very inconvenienced. I recently did three transactions, read and weep. BTC. 17.01 USD fee BTH. 0.01 USD fee BTG. 0.01 USD fee Or maybe bitcoin simply isn't able to scale due to the massive influx of new users? |
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I made a bitcoin transaction from btc core to bittrex with quite low fee, yet looks like it went through in 4-5 days, now I have it "sent" for 2 days but I still can't see it in my bittrex balance... is this anything to worry about or is the network this goddamn busy or something?
If it went through, AKA "Confirmed", then there is indeed a problem, and you shouldn't necessary worry, but definitely look into the issue and contact bitrrex's support, as they probably somehow haven't credited your deposit. I believe that either after 1 or 6 confirmations Bittrex should show your deposited BTC in your account, but don't quote me on that. Do you have a transaction ID so i can take a look? |
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i have 1 person joining airdrop with my mail and his data but the copy of his data are on my mail (LOL) how can report him on forum so mods can ban him?
Mods typically don't ban people for scamming, (Unless they're impersonating someone one this forum by their username or something(?)) What you can do however is get them "tagged". Open up a scam report here, -> https://bitcointalk.org/index.php?board=83.0If your story is believable, and someone is actually stealing your data/email adress? DT2+ might tag him as a scammer/untrustworthy. |
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I found this site which generat's addresses and private keys according to your random characters you choose ! now my question can i use these address and private keys to save bitcoin or it must be generated by the used wallets ,i hate wallets because the store my private key far from me ...can we use it for other cryptocurrency other than bitcoin?? this is the site http://royalforkblog.github.io/2014/08/11/graphical-address-generator/ There are tons of sites which do exactly this, such as https://www.bitaddress.org/bitaddress.orgAlso, any normal software wallet such as electrum gives you access to your private keys. These keys can be used for anything that uses the same private key derivation as bitcoin, so bitcoin cash for example. I would recommend to generate it offline, and to read through the generation code you just linked, as i'm not sure how authentic it is, ( and it also seems quite dated (2014,) although that shouldn't be a problem |
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Hi,
the situation didn't change. Is there someone that cam help me?
Tx a lot
You mean that your transaction is still unconfirmed? https://blockchain.info/tx/3c25bb7e62833533c87aea751f8998701ac6771fc6a684fad63a2126c49c0962 has a fee of 50sat/b, which is extremely low. The only way your transaction is going to be accepted is if you let a miner prioritize it. (Accelerators such as https://pool.viabtc.com/tools/txaccelerator/.) Note that due to the enormous amounts of requests you literally only have 5 seconds at the beginning of each hour to try and get your transaction in. Or, if you still control the private keys of the (un)spent adress, Do a CPFP transaction with ~1000 sat/b fee. |
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Hi, could you help me too?
I have the same problem and I do not know what to do. I'm worried about losing my BTC's.
I transferred from my wallet on Hashnest to my wallet on an Exchange once 0.2 btc. But when i go to transaction id in the section height it says removed-doublespending.
What I have to do?
Thanks.
Regards
You should start by linking us your transaction ID. by the looks of it it sounds to me that your service provider ( in this case HashNest), double-spended your transaction somewhere else, causing yours to fail? Here's some more information about what double spending really is, https://www.bitcoin.com/info/what-is-bitcoin-double-spendingAlso, alot of ponzi schemes tend to double spend aswell, so that it looks like they're paying out, ( hashnest). |
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I purchased bitcoins from someone from LocalBitcoins for cash. Seller took cash $2000 and sent me bitcoins from his Blockchain wallet. Now its 5 days but the transaction is still unconfirmed. Seller has vanished and his mobile number unreachable. Two questions: 1- can he somehow cancel this transaction or take back those coins he sent me? 2- is it normal to 5 or more days delay in transaction confirmation on 120sat/byte fees? My transaction: https://blockchain.info/tx/371d2e702c53b40f00e760dcfc387fb83a4d583d0d332812f8f03d29705673c1Need help, please reply. Thanks in advance! - Taylor 1. Because he used blockchain.info, it will be dependant on them to cancel his transaction -- stop broadcasting it. Which i believe will happen after a certain amount of time, I am not sure how that process will take. ( As it is a web wallet) 2. With the current mempool the average fee is ~900 sat/b, i'd say that with the current state of the mempool, this isn't uncommon. https://blockchain.info/charts/mempool-size3. You should try every hour to get your transaction into the ViaBTC accelerator, https://pool.viabtc.com/tools/txaccelerator/ as that is the only one that still works. Note that you have approx 5-10 seconds to get your transaction in, before their limit is reached again. |
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Hi guys, Im starting to worry, after trying multiple times to use the coinomi wallet to sweep my private keys on electrum its saying there are no funds attached.. However in the balance of Electrum its showing that there is a balance. I am wondering if anyone has experienced the same issue and any chance of a solution?? Any information/advise will be appreciated.   Are you sure you had bitcoin balance in that wallet at the time the bitcoin gold snapshot was recorded? Fill in your adress here, https://btgexp.com/ to see if your adress has any bitcoin gold balance. Then simply import the private key into a compatible BTG wallet? Why sweep it? |
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Hi I sent a transaction on the 22 Dec im still waiting on the Blockchain it says fully confirmed please let me know where it is and if its recoverable? Transaction ID: 857ea6edfaa1c4d377844078dd5d2957fa65830347743c52dd4f71832a596e3a ps can i see which address it went to the output address: 1Hutwbv2u8GXj8uLGvkqRqPkwSjCdqqTtK how can i verify tht its correct?
Thanks
The adress 1Hutwbv2u8GXj8uLGvkqRqPkwSjCdqqTtK belongs to https://Bittrex.com, so your funds are probably located there. For more info see https://www.walletexplorer.com/wallet/Bittrex.com?from_address=1Hutwbv2u8GXj8uLGvkqRqPkwSjCdqqTtKAs to if your funds are recoverable, i would suggest you to contact bittrex's support team. If it was you actually making the transaction. Also, how did you not know where you were sending the funds to? |
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I was trying to get my Bitcoin Cash off an old paper wallet. i imported the paper wallet onto bread and then immediately sent the full balance to my hardware wallet. Now bread wallet is telling me I have two unconfirmed transactions, one is the import of the paper wallet, and one is the transaction to my hardware wallet. I know i messed up by using too low of a fee from the bread wallet to the hardware wallet, but how was I able to send the imported wallets balance immediately after importing It. Breadwallet UI has been pretty jumpy, sometimes not showing me the transactions even happened. Here’s the transaction ID for the second transaction. Can anybody help me accelerate this, will tip generously.
02662533c464ae240761e644d0327bf348ac08f952497fbc557354ab18cd467b
The tx you linked is from a bitcoin transaction, not bitcoin cash. https://blockchair.com/bitcoin/transaction/02662533c464ae240761e644d0327bf348ac08f952497fbc557354ab18cd467bI've tried to accelerated it for you in http://confirmtx.com, although the site is quite slow right now, so i'm not sure if your transaction got in or not. You should try this accelerator yourself, as it really works. https://pool.viabtc.com/tools/txaccelerator/, but it is currently overloaded with requests, so i couldn't get your tx in. |
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Yeah it’s also not a priority when your sitting on 3.6 Million at current price as of writing.
Would be nice to see a way for people to show support to the forums and gain some reward online with the donating ones It would be nice to have the forum give small amounts of bitcoin back to users in the form of incentives as a goodwill gesture Why would they give money back to users who are only here to spam the forum and make some easy dollars writing shitty posts for some scammy ICO? (Since that's about 90% of the people on this forum.) (Essentially rewarding users for effectively ruining the forum, yeah, great idea.. ) Not sure if you know, but the forum isn't a charity, and neither are these ICO's, signature campaigns, or crypto as a whole. |
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What I am trying to say is,why are people going after Green trust,what's the use if you're not going to trade? To join signature campaigns?
Why don't you ask that to your friend that you are "defending" here, "aTriz".  |
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I have 1BTC in a MultiBit Classic 0.5.19 wallet and realizing how outdated its fee setup is I'm trying to move it to a newer wallet. I set up a Bitcoin Core wallet and let it sync and then tried to send .5btc to it on December 11 but it's still unconfirmed because the most fee the old wallet lets me send is .00005 per kb. Yesterday I tried the 'reset blockchain and transactions' as that's the only thing I can find built into MultiBit to try.
So my question is what is the best way for me to move out of this MultiBit Classic wallet into something modern? I still have .5btc in it and the other .5btc out there unconfirmed since Dec 11.
You should maybe try to export your private keys in a more updated wallet? Either bitcoin core as you mentioned, or something like electrum? I've found this guide by doing a simple google search, https://multibit.org/help/v0.5/help_exportingPrivateKeys.html which is for (?) all 0.5 versions.. It should work. |
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I am using ''Electrum-XVG version 2.4.1''.
The weird thing about it though is that the Electrum history is empty as well and I didn't get a transaction ID from Litebit. I had to confirm the transaction by e-mail though, which I did. After that I saw that the transaction was 'pending', but now even that is nowhere to be found.
Is there a possibility that this withdrawal is stuck in the blockchain?
They should give you a transaction ID i believe, and that should show up in the blockchain. It seems to me that they have either failed to broadcast your transaction (?) or have yet to do so. You checked to see if there were any unconfirmed transactions to the adress you specified? The best thing you can probably do here is contact their support, and ask them to look into your case. I have just contacted their support so I hope they are gonna look into this. It's weird that Litebit.eu doesn't have any withdrawal history on their website. If there was a withdrawal history, then I should be able to see the transaction ID right? Bitcoin network right now is too slow and maybe your transaction is not paying enough fee that is why you are having slow or delayed transaction. Check your electrum history if you receiving some pending transaction and give us your transaction ID so that we can check if what exactly the problem about your transaction.. If ever your transaction is low fee you can request to accelerate your transaction here https://bitcointalk.org/index.php?topic=2623876.msg26715189#msg26715189And hope it can help you out about your slow transaction.. I can't reply for some reason at this topic: https://bitcointalk.org/index.php?topic=2623876.msg26715189#msg26715189 No one can. The thread is locked. Also, the state of the bitcoin network has nothing to do with the state of the Xverge network. They are seperate blockchains, seperate entities. And yes, if there was a transaction it should probably show up in your litebit.eu withdraw history, but it should surely show up in the blockchain, with txid + adress you specified that it would be sent to.. First of all thanks for answering so fast! How can I check whether the transaction is still in the blockchain? I don't have the transaction ID, but I do have the receive address it should be send to. You could simply check the block explorer for the XVerge coin, paste your adress in, and see all the unconfirmed/confirmed transactions that are coming in to that wallet. Their official site lists this https://verge-blockchain.info as their official blockchain explorer "site", but it doesn't seem to load. Try to use something like https://prohashing.com/explorer/Verge/ instead? |
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I'm going to assume that this is an exchange transaction. If the amount you're receiving is big, use pushtx.btc.com otherwise you could try one of the free services offered in the forums but it could take a long time as a lot of people are sending their transactions.
Its from USI-Tech Oic but how do they really do it? I'm really interested in it haha so hope someone would teach or explain  The accelerators? They are most likely closely related to the people who actually decide which transactions will be "confirmed", / added into the new block, aka the miners. Or paid something like a subscription fee to certain pools to get their own transactions prioritized by said pool, and are lending that feature to other people on the forum. Either out of charity or because they're trust farming/ donation baiting. |
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Hi to all members on here  Can anyone please help me? I can give/donate some dollars to anyone that can help me. Just tell me what amount you want. I have tried last night to transfer some bitcoins from Primedice.com to my bitstamp account. I should have checked the fee before making the transaction  The transaction is still unconfirmed. Here is the TXID on blockchain: https://blockchain.info/tx/3c7a2794e0da94ce616526468817ac246acc8ef47ccf44c21352f2c065714bf2Try to either use an acceleration service such as https://www.viabtc.com/tools/txaccelerator/, which is quite tricky to get into nowadays.. Or, post your txid in one of those free acceleration threads in the services section. Although i myself am not entirely convinced that it really works, there's lots of people using them and claiming otherwise. Nothing ventured, nothing gained right? |
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Hello. Can somebody please please help meg.
I used skrill to deposite som money with bitcoin. i have a wallet in bitcoinwallet.com.
I made the deposite 4 days ago and its still pending both in my wallet and in my skrill account. The bitcoins are gone from my wallet. The support in bitcoinwallet.com does not answare bak.
I then opend an account on Blockchain and send some bitcoin from bitcoinwallet.com to Blockchain wallet that transaction is also pending.
Anybody have experience with this, please help me.
I dont know what do do. please help me.
Pending as in it isn't broadcasted yet or "Pending" as in an unconfirmed transaction? If it's the latter, please provide a transaction ID of the transfer. I haven't really seen hard evidence of bitcoinwallet.com being a scam, but i don't really know anyone who uses it either, and my Anti-Virus blocks me from visiting the site. ( bitcoinwallet.com ).. |
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