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The blockchain “forks” temporarily until one of these chains is chosen by another miner who is the first to append another block to this specific chain. By the rule of “longest chain wins”, this another chain that has this block that was once appended to the blockchain (which was temporarily the true one for some nodes) becomes stale, and its transactions also go back to “unconfirmed” state.
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A stale block is a block that was considered true temporarily by a considerable number of nodes, but that has also become obsolete because another chain, which was produced at the same time of this first chain, has become the longest chain, resulting in any other smaller chains being dropped.
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Read 2.
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Because it may happen that your transaction will be at a stale block and, if it is, it will not be appended to the blockchain until it leaves from the ‘mempool’ to a block that is inside the longest chain.
- What happens in the bitcoin network when two miners solve a block at the same time?
Both blocks are valid and 2 miners have two different versions of truth. The network accepts the longest chain. Example: you have two miners that are valid to the blockchain. Miner (yellow)/Miner (blue). If the yellow miner accepts the red miners block. Then miner blue is removed and transactions will be returned to memepool called stale blocks
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What is a stale block?
Blocks were in the blockchain at one time -
How do stale blocks occur?
When miners mine at the same time and create a fork in the blockchain to have different versions of truths. -
Why is it important to wait for more than one block to be confirmed when sending or receiving a transaction?
Wait for 6 more blocks to come after your block. Minimum issue of stale blocks.
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When two miners solve a block at the same time, two competing versions of the blockchain emerge. One of the chains will become longer as more blocks are added, and the other blocks, including the stale blocks, are discarded.
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A stale block, also known as an orphan block, is a block that was successfully mined but is no longer part of the longest chain.
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Stale blocks occur when two miners solve a block at roughly the same time, creating two competing versions of the blockchain.
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It’s important to wait for multiple confirmations when sending or receiving a transaction to be more confident that the transaction is securely embedded in the blockchain and not likely to be undone
- What happens in the bitcoin network when two miners solve a block at the same time?
longest block will survive and other one is gonna be stale blocks - What is a stale block?
its when blockis mined but its no more in chain network - How do stale blocks occur?
when minors crate two blocks that compete each other - Why is it important to wait for more than one block to be confirmed when sending or receiving a transaction?
to be secure and more confident about it
- The chain with the longest PoW will proceed and the other block(s) will be dropped and all transactions will be invalidated and returned to their corresponding mempools.
- A dropped block.
- When a new chain with the longest PoW is accepted and blocks on the losing chain are dropped.
- To ensure that block will not be dropped.
- When two miners solve a block at the same time in the bitcoin network, two valid chains are created. Each chain contains the block solved by the miner who first broadcasted the block to the network. The network will eventually choose one of the two chains to be the valid one and continue building on top of it. The chain with the most accumulated work (the longest chain) will be chosen, and the other chain will become a stale block.
- A stale block, also known as an orphan block, is a block that was successfully mined but was not included in the main blockchain because another block with a greater amount of work was mined at the same time or shortly after.
- Stale blocks occur when multiple miners solve a block at nearly the same time, but only one block can be added to the blockchain. This can happen due to network delays or variations in the speed of mining.
- It is important to wait for more than one block to be confirmed when sending or receiving a transaction because a single block confirmation does not guarantee that the transaction is final and irreversible. It is possible for a stale block to be created, which could result in a double spend if the transaction is included in the stale block. By waiting for multiple block confirmations, the risk of a double spend is greatly reduced, as it becomes increasingly difficult to rewrite the transaction history as more blocks are added to the blockchain.
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In the Bitcoin network, the consensus mechanism used to resolve this situation is called the “longest chain rule.” The rule states that the blockchain with the most proof-of-work (i.e., the longest chain) is considered the valid one. Proof-of-work refers to the computational work that miners have expended to solve the cryptographic puzzle that allows them to add a block to the blockchain.
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A stale block, also known as an orphan block, is a block that is mined but not included in the main blockchain. This can happen when two miners solve a block at the same time, creating a temporary fork in the blockchain. In this situation, the network will eventually select one of the two competing blocks to add to the main blockchain, while the other block becomes a stale block.
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This can happen when two miners solve a block at almost the same time, resulting in a temporary fork in the blockchain.
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It is important to wait for more than one block to be confirmed when sending or receiving a transaction because it ensures that the transaction is considered valid and permanently recorded on the blockchain.
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When two miners solve the cryptographic puzzle at then same time, we have two version of the truth. Here comes a fundamental rule of the BTC blockchain: the longest chain wins.
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STALE BLOCKS are successfully mined, valid blocks whose transactions were not realized because they were part of a version of truth that lost the race of being the longest chain.
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Communication delays can cause conflicts on the Bitcoin network, resulting in Stale Blocks
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To ensure that your transaction won’t be an a stale block, and it will be accepted by the network
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What happens in the bitcoin network when two miners solve a block at the same time?
You end up with two different versions of the blockchain.
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What is a stale block?
It’s a block that has been dropped and returns to the mempool.
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How do stale blocks occur?
Stale blocks happen when two miners solve a block at the same time. The stale block is the block that ends up in the shorter chain, hence discarded.
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Why is it important to wait for more than one block to be confirmed when sending or receiving a transaction?
In order to be sure that the transaction is not in a stale block that is discarded.
If this is the case, the transaction will be reverted.
- What happens in the Bitcoin network when two miners solve a block at the same time?
When two miners solve a block at approximately the same time in the Bitcoin network, a temporary situation called a “blockchain fork” occurs The chain splits into two chains. The longest chain will win, the transactions of the other chain will be dumped into the mempool.
- What is a stale block?
A stale block, also known as an orphaned block or a forked block, is a block that was successfully mined by a miner but ultimately rejected by the network. The blocks in the shorter, competing chains that were not selected as the valid chain become stale or orphaned blocks. These blocks are considered valid, but they are not part of the main blockchain. Stale blocks are not included in the network’s consensus and are essentially discarded.
The block of the shortest chain after a fork, which will be moved to the mempool
- How do stale blocks occur?
Stale blocks occur when two or more miners solve a block at nearly the same time, creating competing valid blocks. However, only one of these blocks can be added to the blockchain, while the others become stale or orphaned.
After a fork. Its the block with the shorthest chain.
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Why is it important to wait for more than one block to be confirmed when sending or receiving a transaction?
Waiting for more than one block confirmation when sending or receiving a transaction is important for several reasons: -
Security: Confirmations provide a measure of security against the possibility of a blockchain reorganization. A blockchain reorganization can occur if a competing chain surpasses the current main chain, causing previously confirmed blocks to become stale. By waiting for multiple confirmations, you increase the level of certainty that the transaction is included in the longest, most secure chain. The more confirmations a transaction has, the less likely it is to be reversed or invalidated.
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Chain stability: Waiting for multiple confirmations helps ensure chain stability. In the case of a temporary fork or competing blocks, the network might eventually converge on a single valid chain. However, until that convergence happens, there is a small possibility of the chain being reorganized or a stale block being discarded. By waiting for additional confirmations, you reduce the likelihood of your transaction being in a stale block that gets discarded.
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Mitigating double-spending risks: Waiting for confirmations helps protect against double-spending attacks. Double-spending occurs when someone tries to spend the same cryptocurrency units more than once. By waiting for confirmations, you increase the difficulty and cost of executing a successful double-spending attack. As more confirmations are added to a transaction, the probability of a successful double-spend diminishes significantly.
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Best practice recommendation: Waiting for multiple confirmations has become a best practice in many cryptocurrency applications and exchanges. It provides an added layer of confidence in the transaction’s finality and minimizes the chances of any potential issues. Different platforms and services may have varying requirements for the number of confirmations they consider sufficient for transaction finality.
The number of confirmations deemed necessary may vary depending on the circumstances. In general, for small-value transactions or situations with a low risk of double-spending, one or two confirmations may be considered sufficient. However, for higher-value transactions or situations where there is a higher risk of a double-spend attempt, waiting for multiple confirmations, such as six or more, is often recommended.
Ultimately, waiting for multiple confirmations when sending or receiving a transaction provides a higher level of confidence, security, and protection against potential blockchain reorganizations or double-spending attacks.
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What happens in the bitcoin network when two miners solve a block at the same time?
Compete to be confirmed and added to blockchain first. The next block, mined by a third miner chooses which prior block to attach to creating longer blockchain. -
What is a stale block?
A block not picked up by a third miner who completed a block and attached to another previously mined block creating a longer blockchain. -
How do stale blocks occur?
Two miners complete a block at the same time. One block is picked up by a third miner which creates a longer blockchain causing the other block to be dropped. -
Why is it important to wait for more than one block to be confirmed when sending or receiving a transaction? It takes time for the network to be informed of new block that was mined. Six confirmations is a safer time to wait. Minimizes the number of stale blocks.
- What happens in the bitcoin network when two miners solve a block at the same time?
Two versions of the blockchain are propagated throughout the network
- What is a stale block?
A stale or orphaned block is a block that was properly mined and on the blockchain but that version of the blockchain was abandoned for a version that was longer and had more proof of work.
- How do stale blocks occur?
When the more than one version of the blockchain exists and the network eventually chooses one over the other. The blockchain that is not chosen’s differing blocks than the chosen blockchain’s blocks are stale.
- Why is it important to wait for more than one block to be confirmed when sending or receiving a transaction?
To make sure your block will not be turned stale.
[quote=“ivan, post:1, topic:8434”]
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What happens in the bitcoin network when two miners solve a block at the same time? Bouth blocks are accepted, but one who survives is determenined by where the next block will be placed.
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What is a stale block? Its a block, witch is accepted in blockchain, but later, after synchroniseing is left alone and ignored and information inside the block is moved to mempool once again.
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How do stale blocks occur? It happens because two miners can make the block in the same time.
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Why is it important to wait for more than one block to be confirmed when sending or receiving a transaction? Its important to be shure that your blockchain does not consist of stale blocks. Six blocks are optimal to be shure that your blockchain is the one that will stay.
- Each block will continue until another miner validates their block. Then the miners and the network as a whole will always choose the longest chain of blocks.
- A stale block is a block that was confirmed but eventually was dropped from the blockchain.
- Stale blocks are blocks that were eventually dropped from the blockchain because a longer chain was made elsewhere.
- It is important to wait for more than one block to be confirmed, preferably 6 blocks, to make sure that the block that your transaction was in did not become a stale/orphansed block that is eventually dropped from the blockchain.
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What happens in the bitcoin network when two miners solve a block at the same time?
-> Both blocks will be accepted but the block with the longest blockchain will hold the position of next in line whilst the other will be dropped from the chain -
What is a stale block?
-> Is the resultant block that was once verifiable but subsequently has been dropped from the chain -
How do stale blocks occur?
-> Two version of the truth or blockchains being produced or propagated in the network and maybe blocks being produced prior to the 10 mins. Blocks being produced prior to six confirmations and prior to the correct version of the truth having the chance to propagate through the network. -
Why is it important to wait for more than one block to be confirmed when sending or receiving a transaction?
-> It’s good practice to wait for six block confirmations to ensure that your block won’t be dropped in the subsequent chain.
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What happens in the bitcoin network when two miners solve a block at the same time?
a) The network chooses the block from the longest chain (in PoW terms) between the two miners
that tied and writes it to the chain.
b) The transactions in the ‘losing’ block are moved back into the mempool. -
What is a stale block?
2. A stale block is one that lost in a tie or was invalid another reason.
It is discarded and the transactions are written back into the mempool. -
How do stale blocks occur?
3. Stale blocks occur when there is a “tie” between miners
or if a block is found to have invalid transactions. -
Why is it important to wait for more than one block to be confirmed when sending or receiving a transaction?
4. Waiting for more than one block to be confirmed is important because consensus must be
reached on the network. Waiting for multiple confirmations decreases the probability of a
discrepancy being written and orphaning that miner’s block.
what happens in the bitcoin network when two miners solve a block at the same time?
- you first have 2 versions of the blockchain(blue & yellow)
- then the next block in the blockchain is created( for example the yellow blockchain).
- the blue blockchain will be abandoned(and transactions are moved back to mem-pool).
- the blue blockchan nodes then adopt the yellow blockchain.
What is a stale block?
Dropped blocks from a blockchain(blue).
How do stale blocks occur?
- when 2 competing nodes solve the puzzle at the same time; thus creating 2 blockchain(yellow & blue)
- then one of the blockchains are eventually abandon(see explanation(1) above).
Why is it important to wait for more than one block to be confirmed when sending or receiving a transaction?
- To make sure that the transaction written to a blockchain… that that blockchain will not be eventually orphaned.
- When two miners mine a block at the same time, what essentially happens is that a fork is created. Both miners get the block reward initially, and other miners start working on the next block based on what version they receive first. That respective chain is considered to be the “correct” chain. This continues until the consensus mechanism kicks in which always recognizes the longest chain.
So in this example, If miner “B” solves the block, the other nodes that first learn of that block continue adding to the chain based on that version which they consider to be valid. When miners create more blocks stemming from Miner “B”'s block than from any other miner’s block, this will become the official version on the blockchain and the other blocks will become “stale” or “orphaned” and all transactions from those blocks will go back into the mempool.
The block reward will then settle upon miner “B” but the transaction fees that were earned for mining the “stale” blocks will often be kept.
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As I briefly mentioned above, a stale block is one that was part of two competing blockchains. Sometimes called an “orphaned” block, they become invalidated because the consensus mechanism recognized a longer competing chain as being the legitimate one. This is called the “longest chain” or “heaviest chain” rule.
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Waiting for more than one block is important to ensure that the transaction is secure and final.
As transactions get recorded in multiple blocks, there is no risk of them being “orphaned” and senders can rest easy knowing that the intended transaction was carried out.
- The chain will split into two, with some nodes accepting one chain and others accepting the other. Whichever version of the blockchain has a new block added to it first becomes the valid chain.
- A stale block is a block that was invalidated by a split in the network.
- The network will always accept the longest version of the blockchain. When a fork happens, whichever chain has a new block added first will be accepted, and the other invalid. The block at the end of that chain that was created at the same time as the other is then stale.
- It is important to wait for multiple (6 recommended) new blocks to be added after yours to ensure confirmation, due to the possibility of a fork which could invalidate your block.
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When two miners solve a block at the same time, both blocks are propagated through the network and the first block to get another miner to append its block to the chain will win and the other block will become an orphaned block and all transactions will be sent back to the mempool.
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A stale block is the block that is not chosen to be continued on in the bitcoin blockchain.
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Stale blocks occur after forks and are the result of the other side of the fork becoming longer.
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It is important to wait for more than one transaction to be confirmed since sometimes you may get a fork and your specific transaction may in fact end up back in the mempool.