How Long Do Ethereum Transactions Take? Metal | Support
In ideal circumstances an Ethereum transaction takes under 20 seconds, and some sites require multiple confirmations. You can view the average blocktime here: . Sometimes due to congestion transactions may take longer, although the Ethereum Development Team is working on scaling solutions. You can view detailed metrics and a calculator for suggested Gas (fees) here: Whenever you send someone Ethereum, the transaction goes through different devicesrunning the Ethereumprotocolaround the world that make sure the transaction is valid. Once the transaction is verified it then waits inside the Mempool. Its basically waiting to be picked up by a Ethereumminer and entered into a block of transaction on the Blockchain. Until it is picked up its considered an unconfirmed transaction or a pending transaction. In some casesthere are so many transactions and blocks are finite not all transactions are picked instantly. Sometimes you need to wait for a certain amount of time until it is included in a block. Once your transaction is included in the block it receives its first confirmation and its no longer pending. After another block of transactions is added it will get another confirmation and so on... This process for transactions needs gas (fee for the Miner) and time to gothrough your buddy. Conclusion: The time, that a transaction need is based on some factors like: Gas, Gwei, amount of miner in the network and amount of transaction in the whole network.The factors vary after some time, so that it may be outdated after tomorrow. In the most cases your Wallet calculate the best fee, that your transaction goes fast to your Buddy, but you can also calculate it on that site Continue reading >>
Cryptopia - Forum
ETH hasn't arrived yet. (I sent it 3 hours ago) Sponsored Link: We presentUservice- new global decentralized transparent system built on the platform ofUREMONT.com 3 hrs 26 mins ago (Jan-03-2018 12:30:05 AM +UTC) Same issues here - etherscan shows the deposit as successful but not showing in wallet here. I have the exact same problem. Sent 4,6-7 ethers. With 729 Confirmations. 3 hours ago. maybe same block looks like im not the only one here with deposit problems. I have also sent $500 worth of ETH and its no where to be found. HELP PLEASE!!! I also have the exact same problem, I've submitted a ticket already, this is just want to raise awareness. I attempted to deposit about $200 worth of ethereum. update, about 24 hrs later my deposit has arrived and has been credited to my account. i have same problem too. My ETH price is 1200 usd dollar I've same issue it's 4 days ago, still no update, I've done ETH winthdraw, I got email for confirmation and after confirmation got sucess message but nothing got transfered and trsaction id showing not found and no transaction in ETH address. Unfortunately my ETH is in the same position. Transferred out within 5 minutes but transferring in 3+ hours now. Good luck, i've been waiting since the 23rd for an ETN deposit with no updates from support. Any update? I also sent an hour ago and still nothing in my wallet. I've read this one user who sent to his ETH wallet last December 15, and still nothing. Same here, depositedsome earlier today says transaction completed but its not in my wallet. Same here! What is happening? My ETH already sent but my cryptopia.co.nz wallet is not. Please fix its soon! I sent 2 Eth to Cryptopia, and nothing as well. This was also my very first transaction with Cryptopia. -_- Way to start off a business rela Continue reading >>
Confirmation - Bitcoin Wiki
After a transaction is broadcast to the Bitcoin network, it may be included in a block that is published to the network.When that happens it is said that the transaction has been mined at a depth of 1 block.With each subsequent block that is found, the number of blocks deep is increased by one.To be secure against double spending , a transaction should not be considered as confirmed until it is a certain number of blocks deep. Note that unconfirmed transactions do not expire . The classic bitcoin client will show a transaction as "n/unconfirmed" until the transaction is 6 blocks deep.Merchants and exchanges who accept bitcoins as payment can and should set their own threshold as to how many blocks are required until funds are considered confirmed.When potential loss due to double spending as nominal, as with very inexpensive or non-fungible items, people may choose not to wait for a transaction to be confirmed, and complete the exchange as soon as it is seen on the network.Most exchanges and other merchants who bear the risk from double spending require 6 or more blocks. There is nothing special about the default, often-cited figure of 6 blocks. It was chosen based on the assumption that an attacker is unlikely to amass more than 10% of the hashrate, and that a negligible risk of less than 0.1% is acceptable.Both these figures are arbitrary, however;6 blocks are overkill for casual attackers, and at the same time powerless against more dedicated attackers with much more than 10% hashrate.  Freshly-mined coins cannot be spent for 100 blocks.It is advisable to wait some additional time for a better chance that the transaction will be propagated by all nodes.Some older bitcoin clients won't show generated coins as confirmed until they are 120 blocks deep. Transactions Continue reading >>
How Long Do Cryptocurrency Deposits Take?
How long do cryptocurrency deposits take? We have a requirement for a cryptocurrency deposit to receive a number of confirmations on its blockchain before the funds can be credited to your account. After a transaction is broadcasted to a Blockchain, it is presented to be included in a block by the miners. Once a transaction has been included in a block, the transaction has had 1 confirmation. With each subsequent block, the number of confirmations increases for the transaction. To avoid the risks of double spending, funds arent credited until a number of confirmations have taken place depending on the cryptocurrency. Each block is found at a different rate depending on the blockchain. For example, a block is found on average every 10 Minutes on the Bitcoin blockchain, and Kraken only credits XBT/BTC deposits to a clients account after 6 confirmations, which takes approximately one hour. Continue reading >>
Where Is My Deposit?
We cannot credit transactions until they havethe proper number of confirmations on the block chain. Bittrex does not control the block chain nor can we make it go any faster. The transaction time is controlled solely by the block chain of the coin you are depositing. If your transaction is confirmed in the block chain and still has not been credited please let us know. For Bitcoin you can enter your transaction id here to check if it is confirmed. Again if it is an unconfirmed deposit we cannot credit it or make it go faster: To check if your deposit is confirmed on a different chain, please use a search engine and search for Coinname block explorer, which should lead you to a block explorer for that coin. Does your coin require a tag/paymentid/memo/message? Please make sure to check the deposit instructions for each coin. If you do not follow the instruction provided your coin may not be credited. If you realize that you did not include the proper tag/paymentid/memo/message please submit a ticket and provided support the full transaction hash of your deposit. If you do not provide the transaction hash we will be unable to credit your coins. The typical SLA for deposits without message is up to four weeks. Did you send your coins to the address generated for that specific coin? Bittrex has many coins. It is common for users to generate an address for one coin and then deposit a different coin to it. In some circumstances we may be able to retrieve these coins. If you sent your coin to a different coin's address you'll need to submit a ticket telling us the coin name, the address you sent the coin to, the transaction id (txid), and the amount of coins sent. This type of deposit mistake can take over 2 weeks to be credited. Continue reading >>
Ethereum: How To Become A Blockchain Developer
Learn how to work with Ethereum, the cryptocurrency for Smart Contracts, a revolutionary technology, home of the cryptokittens, and BTC's main competitor. The CryptoKitties is a Smart Contract that allows users to collect or buy and breed digital cats. If you would like to become a Blockchain developer, sooner or later, you will work with Ethereum. It is the second-largest cryptocurrency at the moment. According to coinmarketcap, its market capital is half the size of Bitcoin and twice the size of Ripple, the third-largest cryptocurrency. Ethereum, like Bitcoin, is a Blockchain solution that provides sharing coins' features. So, why did it become so popular? All the small differences between Ethereum and the first cryptocurrency make it so popular the smart contracts, quickly mined blocks and low fees. Like Bitcoin, Ethereum is a Blockchain solution. The general functional principle is the same currency owners can exchange the funds by sending the transactions which are broadcasted with the decentralized Blockchain. But a couple of differences make Ethereum so special Every block in mined in approximately 10 minutes in Bitcoin. In Ethereum, it happens 4-5 times per minute. Thus, making microtransactions, ordering pizza, or paying for goods does not require one to wait for 10 minutes until the transaction receives the first confirmation. In Bitcoin, the block size is currently specified at 1MB. The Ethereum block size is calculated in a totally different way and depends on the complexity of transactions included in this block. Every block can have a complexity of around 8,000,029 Gas. Every transaction has its own complexity called the Gas and calculated from the code, smart contracts, and information that the transaction includes. Lets say that a single, basic transact Continue reading >>
Transactions Stuck On 0 Confirmations #3386
Same here. I sent some ETH to a friend well over 17 hours ago, but it's stuck on 0 confirmations. My wallet is also stuck on having only 1 or even no peers at all. It does seem to be in sync (says stuff like 30s since last block) so you'd think it would process transactions, but nope. Etherscan just reports Sorry, We are unable to locate the Transaction Hash so the transaction wasn't even pushed it seems. I can't even cancel/remove or "outgas" the transaction because there's no nonce to override as far as I can find (and no way to do that from this wallet anyways). Amazing how all of this (low peer count, transactions stuck) are still active issues a year later; a quick Google yields many similar/identical results from the start of this year and it's not even close to being fixed. You'd think they'd focus on stabilising basic functionality like that (and its underlying infrastructure) more than "cool" extras like smart contracs. This happens in both "Ethereum Wallet" and "Mist", by the way. Latest version, not running an external geth so should be compatible just fine. Continue reading >>
Blockchain Developer Api For Ethereum | Blockcypher
# ^# / \ _ _# / ^ \ |_) | _ _ | / ._ |_ _ ._#< > |_) | (_) (_ |< \_ \/ |_) | | (/_ |# \ v / / |# \ /# v Welcome to BlockCyphers Ethereum API documentation! If youre familiar with our Bitcoin endpoints, youll feel right at home with our Ethereum API. However, there are a few differences, and they stem in part from the fundamental differences between Bitcoin and Ethereum. In the most abstract sense, Bitcoin and Ethereum are cousins; they both have blocks of transactions linked together into a chain, they both use Proof of Work to reach consensus (for now, as Ethereum plans to move to Proof of Stake in a future release), they are both about decentralizing trust. But thats where the similarities end. Here are just some of Ethereums differences: There are no UTXOs, only accounts (of two varieties) Block time is significantly shorter; 15 second target instead of 10 minutes Miners get rewards for including references to orphan blocks (so called uncle blocks) Ethereums scripting language is far more expressive than Bitcoins; typically advanced transactions/contracts are constructed using a higher level language then converted into EVM bytecode Ethereum has no strict cap on monetary supply (ether supply) Transactions cost gas to run (denominated in ether) depending on how computationally expensive they are to run. Blocks also have total gas limits to prevent runaway computation/keep the network decentralized. In a nutshell, Bitcoin is about decentralized, trust-minimizing, sound money. Ethereum is about decentralized, trust-minimizing, sound computation. Much more detail about these differences can be read at the Ethereum Wiki here. You can find more information at the projects webpage as well. man curl | grep -A 3 "DESCRIPTION"DESCRIPTIONcurl is a tool to transfer data from or Continue reading >>
The History Of Ethereum Cryptocurrency Ethereum
The history of ethereum is definitely something any crypto enthusiast would be interested in. Even those who arent familiar with blockchain technology have heard of Bitcoin and the payment process that uses the technology. There is mention from experts that, cryptocurrency Ethereum will rocket past Bitcoin in 2018. Cryptocurrency Ethereum is a public service that uses blockchain technology to process smart contracts and trading safely without intermediary. Cryptocurrency Ethereum has two types of accounts: externally owned accounts and contract accounts. Ethereum enables developers to build different types of decentralized apps. Since Ethereum seems to be gaining steady momentum, experts are predicting it would soon surpass Bitcoin usage. Bitcoin and Ethereum are similar in many ways. There are however key differences between the two: Bitcoin trades only in crypto. Ethereum has several methods such as cryptocurrency, smart contracts and Ethereum virtual machine. Bitcoin uses proof of work security protocol. Ethereum uses proof of stake. Bitcoin only allows public transactions to be processed. Ethereum allows both permissioned and permissionless transactions. Ethereums averaged block time is a lot less than Bitcoins at 12 seconds vs 10 minutes. Because of this, there are more block confirmations which enables miners to mine more and receive more reward. By 2021 it is calculated that only half of the Ether will be mined ( more than 90 million tokens) but the majority have been mined (21 million supply cap) With Bitcoin, miners run the platform and verify transactions and are rewarded. The first computer to solve each new block gets bitcoins as a reward. Ethereum doesnt offer block rewards, but allows miners a transaction fee. One of the advantages of Ethereum is that it Continue reading >>
What Are Bitcoin Blocks And Bitcoin Confirmations ?
What are Bitcoin Blocks and Bitcoin Confirmations ? Last updated on March 18th, 2015 at 10:43 am Lets say I send you 1 Bitcoin. After a few minutes you see that this transaction has received one confirmation. What does this actually mean? The block chain is built out of blocks. Each new block is a set of new unique Bitcoin transactions that were recently made.So when I broadcasted to the network that I want to send you 1 Bitcoin the transaction went into an unconfirmed transactions pool. Miners entered the unconfirmed transactions pool, took this transaction and others like it, verified they were valid (meaning I actually have the 1 Bitcoin to spend), and grouped them into a block.The new block is set at the top of the blockchain and is considered confirmed. Now miners can move on to build the next block on top of that one. Each time a new block is built it means that the older blocks got confirmed again (since they are checked also in the process). The more confirmations you get, the harder it will be for someone to manipulate the system and remove the block containing this transaction from the wall (or blockchain) since its buried under the other blocks that were confirmed. It is recommended to wait for at least 6 confirmations in order to be 99.9% sure that your transaction wont get canceled this takes roughly 1 hour to achieve. If youre dealing with smaller amounts of money youre probably OK with waiting for just 1 confirmation. Reversing a transaction takes planning, time and effort and a lot of computing power. Most people probably wont go through all of that trouble for a small amount of money. Continue reading >>
Transactions - What Number Of Confirmations Is Considered Secure In Ethereum? - Ethereum Stack Exchange
What number of confirmations is considered secure in Ethereum? In Bitcoin, 6 confirmations are considered secure (very low probability of transaction/block reversal). Eth, you are talking about confirming a block here, right? I ask because of the comment lungj made to my question here: ethereum.stackexchange.com/questions/21686/ - Your clarification, would be great. Tesa Jul 27 at 22:48 @Tesa I understand the terminology isn't great. You would say a transaction has 6 confirmations; but we don't really say that blocks get confirmed and it's unusual to say that a block has 6 confirmations. A well-written definition from Bitcoin : "confirmations represent the number of blocks in the block chain that have been accepted by the network since the block that includes the transaction." (When we get to Proof of Stake, there are notions of blocks getting finalized.) eth Aug 10 at 6:09 12 confirmations; however, exchanges and entities handling very large amounts of Ether frequently are still encouraged to run two different Ethereum implementations and only accept transactions that have been confirmed by both for maximum security (e.g. Go & C++). For reference, 12 confirmations is approximately 3 minutes. The geth client waits 5 blocks for confirmation of fresh minted blocks (around 1 minute). I0201 19:07:07.354260 9098 worker.go:349] Mined block (#1483 / a2648b58). Wait 5 blocks for confirmation To make sure a block is no uncle or a transaction included in a block does not hang up in an ommer, I would suggest waiting 7 confirmations (around 2 minutes). From the whitepaper : An uncle included in block B must have the following properties: [...] It must be a direct child of the kth generation ancestor of B, where 2 <= k <= 7. [...] Miners need to check the parameters of the last 250 Continue reading >>
Releasing Stuck Ethereum Transactions
Focusing on real-world use cases for Ethereum Ethereum is experiencing a backlog of transactions at current, resulting in a number of transactions not being processed for hours or even days. This article explains how transactions can become stuck, and what can be done to release them. There are many methods for deciding on the best gas price when sending an Ethereum transaction. Websites such as provide an overview of the gas usage and information about the current transaction pool can be found at The latter website is especially useful because it can order transactions by gas price. To do so click on the GasPrice column. The resultant list is roughly how miners will look at the transactions so if you select a gas price value to ensure that your transaction is in the first couple of pages you are likely to have very short confirmation times. But what if your transaction has not been confirmed? It is possible that it has become stuck, and needs action to be released. Before explaining how to release stuck transactions it is important to understand why transactions become stuck in the first place. Ethereum is a blockchain: multiple blocks, each containing transactions and linked one after the other in a chain as shown below: (In reality both individual blocks and the chain structure are more complex, but the diagram provides a sufficient overview for the purpose of this article). The concept of blocks being created by miners through a process called mining is well-known, but the process by which transactions are selected for a particular block is less clear. To explore this process in more detail, let us look at the creation of example block 1434 below. Ethereum contains many elements other than the blockchain, and one of these is the transaction pool. The transaction po Continue reading >>
Why Ethereum Takes 36 Confirmations?
This is the first time I sent eth and it doesn't appear in other wallet until 36 confirmations. Is there any minimum confirmations requirement for eth?. It is a common myth that Bitcoin is ruled by a majority of miners. This is not true. Bitcoin miners "vote" on the ordering of transactions, but that's all they do. They can't vote to change the network rules. Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here. This is the first time I sent eth and it doesn't appear in other wallet until 36 confirmations. Is there any minimum confirmations requirement for eth?. need take 36 confirmations i think sending to exchanger sample in bittrex about confirmation receive account in exchanger, every exchanger have policy This is the first time I sent eth and it doesn't appear in other wallet until 36 confirmations. Is there any minimum confirmations requirement for eth?. 12 confirmations; however, exchanges and entities handling very large amounts of Ether frequently are still encouraged to run two different Ethereum implementations and only accept transactions that have been confirmed by both for maximum security (e.g. Go & C++). More confirmation by the exchange to keep the secure transaction for his service. Continue reading >>
Blockchain: A Very Short History Of Ethereum Everyone Should Read
Blockchain: A Very Short History Of Ethereum Everyone Should Read Opinions expressed by Forbes Contributors are their own. Even those who are not familiar with blockchain are likely to have heard about Bitcoin, the cryptocurrency and payment system that uses the technology. Another platform called Ethereum, that also uses blockchain, is predicted by some experts to overtake Bitcoin this year. Ethereum is an open-source public service that uses blockchain technology to facilitate smart contracts and cryptocurrency trading securely without a third party. There are two accounts available through Ethereum: externally owned accounts (controlled by private keys influenced by human users) and contract accounts. Ethereum allows developers to deploy all kinds of decentralized apps. Even though Bitcoin remains the most popular cryptocurrency, its Ethereums aggressive growth that has many speculating it will soon overtake Bitcoin in usage. While there are many similarities between Ethereum and Bitcoin, there are also significant differences. Here are a few : Bitcoin trades in cryptocurrency, while Ethereum offers several methods of exchange, including cryptocurrency (Ethereums is called Ether), smart contracts and the Ethereum Virtual Machine (EVM). They are based on different security protocols : Ethereum uses a "proof of stake" system as opposed the "proof of work" system used by Bitcoin. Bitcoin allows only public (permissionless or censor-proof) transactions to take place; Ethereum allows both permissioned and permissionless transactions. The average block time for Ethereum is significantly less than Bitcoins: 12 seconds versus 10 minutes. This translates into more block confirmations, which allows Ethereums miners to complete more blocks and receive more Ether. It is estimat Continue reading >>
Verifying An Ethereum Transaction
Your ethereum transaction history can be accessed by clickingEtherin the menu on the left. All ethereum transactions you have sent and received will be displayed, and additional information about individual transactions can be accessed from this section of your wallet. Start by clicking on a transaction. You can see that the transaction is either confirmed or pending on the bottom left. If you move your cursor over the box with the arrow to the left ofTransaction Confirmedyou will see the following: Clicking on this box will take you to the actual transaction on the ethereum blockchain. Our wallet will redirect you to a third party site called Etherscan.io, but you can use any ethereum block explorer to verify this information. Continue reading >>