chainparams: Bump assumed valid hash #18500

1. 
   MarcoFalke commented at 6:37 PM on April 1, 2020: member

   See https://github.com/bitcoin/bitcoin/blob/master/doc/release-process.md#before-branch-off

2. in src/chainparams.cpp:104 in 7777ce1752 outdated

     99 | @@ -100,8 +100,8 @@ class CMainParams : public CChainParams {
    100 |          pchMessageStart[3] = 0xd9;
    101 |          nDefaultPort = 8333;
    102 |          nPruneAfterHeight = 100000;
    103 | -        m_assumed_blockchain_size = 280;
    104 | -        m_assumed_chain_state_size = 4;
    105 | +        m_assumed_blockchain_size = 320;
    106 | +        m_assumed_chain_state_size = 6;
   

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   sipa commented at 6:54 PM on April 1, 2020:

   My chainstate/ dir is 3.8 GB. Are you increasing this to give some room for expansion, or seeing different numbers than I do?

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   MarcoFalke commented at 8:47 PM on April 1, 2020:

   How do you check the size of the chainstate dir?

   $ du -sh ~/Downloads/bm/chainstate/
   4.6G	/home/marco/Downloads/bm/chainstate/
   

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   instagibbs commented at 8:48 PM on April 1, 2020:

   du -sh ~/.bitcoin/chainstate/
   3.8G	/home/instagibbs/.bitcoin/chainstate/
   

3. in src/chainparams.cpp:90 in 7777ce1752 outdated

     83 | @@ -84,10 +84,10 @@ class CMainParams : public CChainParams {
     84 |          consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
     85 |  
     86 |          // The best chain should have at least this much work.
     87 | -        consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000008ea3cf107ae0dec57f03fe8");
     88 | +        consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000e1ab5ec9348e9f4b8eb8154");
     89 |  
     90 |          // By default assume that the signatures in ancestors of this block are valid.
     91 | -        consensus.defaultAssumeValid = uint256S("0x00000000000000000005f8920febd3925f8272a6a71237563d78c2edfdd09ddf"); // 597379
     92 | +        consensus.defaultAssumeValid = uint256S("0x0000000000000000000f2adce67e49b0b6bdeb9de8b7c3d7e93b21e7fc1e819d"); // 623950
   

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   instagibbs commented at 7:10 PM on April 1, 2020:

   ACK hash, height on personal node

4. DrahtBot added the label Validation on Apr 1, 2020
5. MarcoFalke added this to the milestone 0.20.0 on Apr 1, 2020
6. chainparams: Bump assumed valid hash 222253e37d
7. MarcoFalke force-pushed on Apr 1, 2020
8. fanquake approved
9. 
   fanquake commented at 8:47 AM on April 2, 2020: member

   ACK 222253e37d9702181fe754d776177962d6794f30 - matches output on my node. Also have 3.8GB for the chainstate dir. If anyone wants to know what commands they should run / what to check; I have some docs on assumevalid updates.

10. elichai approved
11. 
    elichai commented at 10:31 AM on April 2, 2020: contributor

    ACK 222253e37d9702181fe754d776177962d6794f30 All the mainnet params match my local node. Have 3.7GB chainstate dir, and 287GB blocks dir.

12. 
    MarcoFalke commented at 12:10 PM on April 2, 2020: member

    Open-Close to re-run ci. See #15847 (comment)

    Previous runs:

    • https://ci.appveyor.com/project/DrahtBot/bitcoin/builds/31891367
    • https://travis-ci.org/github/bitcoin/bitcoin/builds/669896548
13. MarcoFalke closed this on Apr 2, 2020

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14. MarcoFalke reopened this on Apr 2, 2020

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15. theStack approved
16. 
    theStack commented at 12:33 PM on April 2, 2020: member

    ACK https://github.com/bitcoin/bitcoin/pull/18500/commits/222253e37d9702181fe754d776177962d6794f30 Verified the parameters on my node with:

    $ bitcoin-cli getblockstats 623950
    $ bitcoin-cli getblock 0000000000000000000f2adce67e49b0b6bdeb9de8b7c3d7e93b21e7fc1e819d
    $ bitcoin-cli getchaintxstats 4096 0000000000000000000f2adce67e49b0b6bdeb9de8b7c3d7e93b21e7fc1e819d
    

    The same procedure also for the testnet. Mainnet chainstate dir has 3.8GB size, blocks dir has 287GB. Testnet chainstate dir has 16KB size, blocks dir has 26GB.

17. instagibbs approved
18. 
    instagibbs commented at 1:10 PM on April 2, 2020: member

    ACK https://github.com/bitcoin/bitcoin/pull/18500/commits/222253e37d9702181fe754d776177962d6794f30 all mainnet params, did not check testnet

19. laanwj merged this on Apr 2, 2020
20. laanwj closed this on Apr 2, 2020

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21. MarcoFalke deleted the branch on Apr 2, 2020
22. DrahtBot locked this on Feb 15, 2022

Contributors

MarcoFalkesipainstagibbsfanquakeelichaitheStack

Milestone
0.20.0