getblockchaininfo.verificationprogress never reaching 1.0 #26433

1. 
   sander2 commented at 11:49 am on November 1, 2022: none

   Expected behavior

   getblockchaininfo.verificationprogress is 1.0 when it is done syncing

   Actual behavior

   The highest value that getblockchaininfo.verificationprogress gets to is something like 0.9999976273867589. As a result, we can not rely on this value to determine if syncing is complete. We can not rely on getblockchaininfo.initialblockdownload either due to #26432

   To reproduce

   Call getblockchaininfo on a synced node and observe that verificationprogress is < 1.0.

   System information

   Version 22 of the bitcoin core binary, downloaded from the website

2. sander2 added the label Bug on Nov 1, 2022
3. maflcko removed the label Bug on Nov 1, 2022
4. maflcko added the label RPC/REST/ZMQ on Nov 1, 2022
5. maflcko added the label Questions and Help on Nov 1, 2022
6. 
   maflcko commented at 11:58 am on November 1, 2022: member

   As per the documentation, the field is only an estimate. The guess will take into account the duration since the timepoint of your tip block and the estimate of the rate of transactions.

   Maybe you are better off crafting your own estimate, based on your needs?

7. 
   sander2 commented at 12:12 pm on November 1, 2022: none

   As per the documentation, the field is only an estimate. The guess will take into account the duration since the timepoint of your tip block and the estimate of the rate of transactions.

   Maybe you are better off crafting your own estimate, based on your needs?

   Hmm that’s not very useful then for our needs. After some googling, I found https://bitcoin.stackexchange.com/questions/96452/how-to-detect-that-full-node-is-in-sync-using-jsonrpc . Can you confirm that if getblockchaininfo.headers is equal to getblockchaininfo.blocks, the sync is complete?

8. 
   maflcko commented at 12:44 pm on November 1, 2022: member

   Again, it might be better if you stated your problem/use-case and designed a estimate function for your problem/use-case. It is not possible to design a “sync” function without knowing what it should do.

   Note, usually the issue tracker is used to track technical issues related to the Bitcoin Core code base. General bitcoin questions and/or support requests are best directed to the Bitcoin StackExchange or the #bitcoin IRC channel on Libera Chat.

9. 
   maflcko commented at 7:12 am on November 2, 2022: member

   Closing for now. Let us know if you have any other questions.
10. maflcko closed this on Nov 2, 2022

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11. bitcoin locked this on Nov 2, 2023

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RPC/REST/ZMQ Questions and Help