Commit graph

23 commits

Author SHA1 Message Date
Patrick Lodder 0c600d7f9d
Fixate BIP65 softfork heights
- Re-introduce Params.BIP65Height
- Fixate block 1854705 for testnet
- Fixate block 3464751 for mainnet
- Fixate block 1351 for regtest
- Stop using IsSuperMajority() in validation for BIP65
- Simplify RPC SoftForkMajorityDesc
2021-02-13 17:24:55 +01:00
Ross Nicoll 4d5e53e7b2 Initialise left/right consensus branches to null (#1435)
Strictly speaking the left/right consensus branches haven't been initialised so contain random values.
Most of the time these happen to be null, but sometimes causes client crashes (at least it does in 1.15, but fixing in earlier versions to be sure).
2018-09-19 21:09:16 +01:00
Ross Nicoll 7b81f4de0a Move COINBASE_MATURITY to the consensus parameters (#1426) 2018-09-19 21:09:16 +01:00
Ross Nicoll 1be681a1b9 Modify chain consensus parameters to be height aware (#1396)
* Modify chain consensus parameters to be height aware
* Correct implementation of simplified rewards in parameters
* Correct max money
* Use base block version in IsSuperMajority() instead of full version
* Correct mining of blocks in AuxPoW tests
* Add in missing pre-AuxPoW consensus checks
2018-09-19 19:24:06 +01:00
Ross Nicoll a89d54c4b2 Change BIP65/66 enforcement to match Dogecoin (#1403)
* Introduce first estimates at BIP lock-in blocks

* Introduce Dogecoin BIP parameters

* Re-introduce supermajority rules for BIP65

* Add BIP65 supermajority rules

* Tighten v3 block constraints

* Don't enforce coinbase in v2 blocks

* Correct testnet majority params

* Change to using base version when checking supermajority
2018-09-19 19:23:29 +01:00
Ross Nicoll bc8cca4896 Merge AuxPoW support from Namecore
Changes are as below:

Wrap CBlockHeader::nVersion into a new class (CBlockVersion).  This allows to take care of interpreting the field into a base version, auxpow flag and the chain ID.

Update getauxblock.py for new 'generate' RPC call.

Add 'auxpow' to block JSON.

Accept auxpow as PoW verification.

Add unit tests for auxpow verification.

Add check for memory-layout of CBlockVersion.

Weaken auxpow chain ID checks for the testnet.

Allow Params() to overrule when to check the auxpow chain ID and for legacy blocks.  Use this to disable the checks on testnet.

Introduce CPureBlockHeader.

Split the block header part that is used by auxpow and the "real" block header (that uses auxpow) to resolve the cyclic dependency between the two.

Differentiate between uint256 and arith_uint256.

This change was done upstream, modify the auxpow code.

Add missing lock in auxpow_tests.

Fix REST header check for auxpow headers.

Those can be longer, thus take that into account.  Also perform the check actually on an auxpow header.

Correctly set the coinbase for getauxblock results.

Call IncrementExtraNonce in getauxblock so that the coinbase is actually initialised with the stuff it should be.  (BIP30 block height and COINBASE_FLAGS.)

Implement getauxblock plus regression test.

Turn auxpow test into FIXTURE test.

This allows using of the Params() calls.

Move CMerkleTx code to auxpow.cpp.

Otherwise we get linker errors when building without wallet.

Fix rebase with BIP66.

Update the code to handle BIP66's nVersion=3.

Enforce that auxpow parent blocks have no auxpow block version.

This is for compatibility with namecoind.  See also https://github.com/namecoin/namecoin/pull/199.

Move auxpow-related parameters to Consensus::Params.
2018-09-19 19:22:45 +01:00
practicalswift cc16d99f1d [trivial] Fix typos in comments 2017-01-27 21:22:35 +01:00
Gregory Maxwell e440ac7ef3 Introduce assumevalid setting to skip presumed valid scripts.
This disentangles the script validation skipping from checkpoints.

A new option is introduced "assumevalid" which specifies a block whos
 ancestors we assume all have valid scriptsigs and so we do not check
 them when they are also burried under the best header by two weeks
 worth of work.

Unlike checkpoints this has no influence on consensus unless you set
 it to a block with an invalid history.  Because of this it can be
 easily be updated without risk of influencing the network consensus.

This results in a massive IBD speedup.

This approach was independently recommended by Peter Todd and Luke-Jr
 since POW based signature skipping (see PR#9180) does not have the
 verifiable properties of a specific hash and may create bad incentives.

The downside is that, like checkpoints, the defaults bitrot and older
 releases will sync slower.  On the plus side users can provide their
 own value here, and if they set it to something crazy all that will
 happen is more time will be spend validating signatures.

Checkblocks and checklevel are also moved to the hidden debug options:
 Especially now that checkblocks has a low default there is little need
 to change these settings, and users frequently misunderstand them as
 influencing security or IBD speed.  By hiding them we offset the
 space added by this new option.
2017-01-13 15:42:24 +00:00
isle2983 27765b6403 Increment MIT Licence copyright header year on files modified in 2016
Edited via:

$ contrib/devtools/copyright_header.py update .
2016-12-31 11:01:21 -07:00
Gregory Maxwell fd46136dfa IBD check uses minimumchain work instead of checkpoints.
This introduces a 'minimum chain work' chainparam which is intended
 to be the known amount of work in the chain for the network at the
 time of software release.  If you don't have this much work, you're
 not yet caught up.

This is used instead of the count of blocks test from checkpoints.

This criteria is trivial to keep updated as there is no element of
subjectivity, trust, or position dependence to it. It is also a more
reliable metric of sync status than a block count.
2016-11-02 01:47:02 +00:00
Pieter Wuille f9c23dea97 Define start and end time for segwit deployment 2016-10-17 14:15:57 +02:00
NicolasDorier 122786d0e0 Consensus: Remove ISM 2016-07-23 01:02:53 +09:00
Pieter Wuille 8b49040854 BIP141: Commitment structure and deployment
Includes a fix by Suhas Daftuar and LongShao007
2016-06-22 15:42:59 +02:00
Luke Dashjr d3df40e51a Implement BIP 9 GBT changes
- BIP9DeploymentInfo struct for static deployment info
- VersionBitsDeploymentInfo: Avoid C++11ism by commenting parameter names
- getblocktemplate: Make sure to set deployments in the version if it is LOCKED_IN
- In this commit, all rules are considered required for clients to support
2016-06-06 17:10:22 +00:00
Pieter Wuille 65751a3cf2 Add CHECKSEQUENCEVERIFY softfork through BIP9 2016-03-18 08:09:06 +00:00
Suhas Daftuar 532cbb22b5 Add testing of ComputeBlockVersion 2016-03-15 16:54:39 +01:00
Pieter Wuille 6851107b3a BIP9 Implementation
Inspired by former implementations by Eric Lombrozo and Rusty Russell, and
based on code by Jorge Timon.
2016-03-15 16:54:38 +01:00
MarcoFalke fa24439ff3 Bump copyright headers to 2015 2015-12-13 18:08:39 +01:00
Alex Morcos 33c90cf197 Make skipping BIP30 check chain agnostic 2015-11-02 20:11:55 -05:00
Eric Lombrozo 7801f4387d Added fPowNoRetargeting field to Consensus::Params that disables nBits recalculation. 2015-10-19 14:25:21 -04:00
Philip Kaufmann a21df62069 ensure consistent header comment naming conventions
- BITCOIN_FOLDER_SUBFOLDER_FILENAME_H
2015-04-20 13:29:22 +02:00
Cory Fields fd311996e8 consensus: don't use arith_uint256 in consensus.h
Requiring arith_uint256 at such a base level is not good for modularity.
2015-04-10 15:33:37 -04:00
Jorge Timón bd006110fb Consensus: Refactor: Introduce Consensus::Params class 2015-03-25 20:39:26 +01:00