Bitcoin client no block source available as for work
Bitcoin XT embraces Bitcoin's original vision of simple, reliable, low-cost transactions for everyone in the world. Bitcoin XT originated as a series of patches on top of Bitcoin Core and is now a independently maintained software fork.
We do deterministic builds so anyone can check the downloads correspond to the source code. The XT mission statement defines what the project believes is important: We try to follow Satoshi's original vision, as it is that vision which brought the Bitcoin community together. Many years ago, a capacity limit was introduced into Bitcoin by Satoshi. He intended it to be removed once lightweight wallets were developed, however, this was never done.
As predicted Bitcoin has run out of capacity and users are experiencing reliability problems as a result. Miners and users who disagree with them have switched to Bitcoin XT or switched to other clients following the Bitcoin Cash consensus. There has been much community debate on this topic. You can read analysis and explanations for why we think raising the block size limit is important here:.
By mining with Bitcoin XT you are empowered to vote on a new maximum block size limit. This indicates to the rest of the network that you support updating the limit. Bitcoin XT supports configuring the maximum size of blocks to mine. When set your node will not create blocks larger than the limit, although it will still accept them.
By running Bitcoin XT you take no risks: If enough does, you will follow the new chain and things will continue as normal. Additionally, XT has a useful feature: By running XT you help propagate information about double spends across the network, making it harder for payment fraudsters to steal from sellers by broadcasting two conflicting transactions simultaneously.
Get in touch via our chatroom on Gitter. What we stand for The XT mission statement defines what the project believes is important: Scaling the network up to handle user demand is importanteven if that means the network changes along the way. It's what Satoshi wanted and the idea of a global system used by ordinary people is what motivated many of us to join him. XT provides people with information they needeven if using it requires them to make risk based decisions.
We believe unconfirmed transactions are important. Many merchants want or need to accept payments within seconds rather than minutes or hours. XT accepts this fact and does what it can to minimize the risk, then help sellers judge what remains.
It is committed to the first seen rule. We will not adopt changes that make unconfirmed transactions riskier. Lightweight wallets are important. Most users cannot or will not run a fully verifying node. Most of the world population does not even own a computer: These users must sacrifice some security in order to participate, so XT supports whatever technical tradeoffs wallet developers wish to explore. Decision making is quick and clear.
Decisions are made according to a leadership hierarchy. The XT software encodes decisions that follow the above principles: We do not consider writing principled software to be centralizing and do not refuse to select reasonable defaults. The Bitcoin XT community is friendly, pragmatic, cares about app developers and considers the user experience in everything we do. We value professionalism in technical approach and communication. Block size hard fork Many years ago, a capacity limit was introduced into Bitcoin by Satoshi.
You can read analysis and explanations for why we think raising the block size limit is important here: A series of essays by Gavin Andresen Why the block size limit must be raised and why the proposed alternative schemes will not workby Mike Hearn. Miners By mining with Bitcoin XT you are empowered to vote on a new maximum block size limit. Users and merchants By running Bitcoin XT you take no risks: Discussion of new patches Questions around usage or how best to configure XT for mining Development ideas please at least try to implement your idea before asking others to do so!
Be polite and debate ideas rather than people.
Bitcoin Core installation binaries can be downloaded from bitcoincore. If you are running an older version, shut it down. Blocks will be stored on disk out of order in the order they are received, reallywhich makes it incompatible with some tools or other programs. Reindexing using earlier versions will also not work anymore as a result of this. If you want to be able to downgrade smoothly, make a backup of your entire data directory.
Without this your node will need start syncing or importing from bootstrap. It is possible that the data from a completely synchronised 0. This does not affect wallet forward or backward compatibility.
There are no known problems when downgrading from 0. At the time of this release, the P2P network is being flooded with low-fee transactions. This causes a ballooning of the mempool size. If this growth of the mempool causes problematic memory use on your node, it is possible to change a few configuration options to work around this. The growth of the mempool can be monitored with the RPC command getmempoolinfo. One is to increase the minimum transaction relay fee minrelaytxfeewhich defaults to 0.
The other is to restrict the relaying of free transactions with limitfreerelay. It defaults to Reducing this number reduces the speed at which the mempool can grow due to free transactions. This release supports running a fully validating node without maintaining a copy of the raw block and undo data on disk.
To recap, there are four types of data related to the blockchain in the bitcoin system: The databases are built from the raw data. The block index continues to hold the metadata about all blocks in the blockchain.
The minimum allowed is MB. Note that this is in addition to whatever is required for the block index and UTXO databases. The minimum was chosen so that Bitcoin Core will be able to maintain at least blocks on disk two days worth of blocks at 10 minutes per block.
In rare instances it is possible that the amount of space used will exceed the pruning target in order bitcoin client no block source available as for work keep the required last blocks on disk. Thus, if the user specifies MB, once that level is reached the program will begin deleting the oldest block and undo files, while continuing to download the blockchain.
For now, block pruning disables block relay. Block pruning is currently incompatible with running a wallet due to the fact that block data is used for rescanning the wallet and importing bitcoin client no block source available as for work or addresses which require a rescan. However, running the wallet with block pruning will be supported in the near future, subject to those limitations.
Once you have pruned blocks, going back to unpruned state requires re-downloading the entire blockchain. To do this, re-start the node with -reindex. Note also that any problem that would cause a user to reindex e. Finally, note that when a pruned node reindexes, it will delete any blk???. Experimental support for big-endian CPU architectures was added in this release.
All little-endian specific code was replaced with endian-neutral constructs. The build system will automatically detect the endianness of the target. There have been many changes in this release to reduce the default memory usage of a node, among which:. This release improves the algorithm used for fee estimation.
Previously, -1 was returned when there was insufficient data to give an estimate. Now, -1 will also be returned when there is no fee or priority high enough for the desired confirmation target. In those cases, it can help to ask for an estimate for a higher target number of blocks. This option allows separating transaction submission from the node functionality. Making use of this, third-party scripts can be written to take care of transaction re broadcast:.
One such application is selective Tor usage, where the node runs on the normal internet but transactions are broadcasted over Tor. For an example script see bitcoin-submittx. This release adds functionality to create a new circuit for every peer connection, when the software is used with Tor.
The new option, -proxyrandomizeis on by default. When enabled, every outgoing connection will potentially go through a different exit node. That significantly reduces the chance to get unlucky and pick a single exit node that is either bitcoin client no block source available as for work, or widely banned from the P2P network. This improves connection reliability as well as privacy, especially for the initial connections.
Detailed release notes follow. This overview includes changes that affect behavior, not code moves, refactors and string updates. For convenience in locating the code changes and accompanying discussion, both the pull request and git merge commit are mentioned. As well as everyone that helped translating on Transifex.
Bitcoin Core version 0. Please report bugs using the issue tracker at github: Bitcoin client no block source available as for work warning Because release 0. Important information Transaction flooding At the time of this release, the P2P network is being flooded with low-fee transactions. For example, add the following to bitcoin.
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