Gridcoin fork situation: October 12

[erkan]

 

• situation
• verify your block hashes
• further info about forks

I. situation

About 11h ago, there were first reports of Gridcoin users being on a fork :-(

Looking now at it, the block that "split" the other chain(s) seems: 1046801

output from IRC:

• !verify 1046800 e20a0e5c04c987942f7a557ec2b06a220a6c0dfb504f4db7de2719b8c436cf5e
•    fediverse: => CORRECT: the given hash (e20a0e5c04c987942f7a557ec2b06a220a6c0dfb504f4db7de2719b8c436cf5e) belongs to block 1046800

• !verify 1046801 14782e6f8fff6133cec35e6a533d308adcc98f1d8d73be2867be085ddb1250df
•   fediverse: => WRONG: block 1046801 has this hash: 2b3ce5374983ba1c47ef6dd078e28e1d29a590e23a3690d19c0a1c4e84d4e8a6

Chain examples at 22:03 UTC+2, 2017 Oct 12:

• another user on forked chain: net weight: 1.07M; difficulty 0.125
• fediverse has: 4.566 mio net weight; diff 1.145

II. Please verify your block hashes below, so we stay together!

                   (e.g. type in your Gridcoin wallet's debug menu: getblockhash 1047690)
 

• When your hash doesn't match with below hashes:        
  • try a restart of the client (see here why).
  • If that did not help: come first to IRC and we'll guide you (e.g. let you do a reorganize (see: (A)), this will likely take less time than doing a blockchain rebuild)
  • You could also try from the Gridcoin menu:  Advanced » Rebuild Block Chain  (you can also apply the snapshot/bootstrap and make also a !backup of your important files first)
• ...
• 1047690 - 40a4689d5a63cbc9c61643fba1ab80c3aba4dbdca7f2c795feffa210abbb737d (0.95 difficulty; 9.77 million net weight)
• 
  
• 1047488 - 7dfad8f9071d5a63d300b2b04946c0e46f8b3cd0851475df7180e22f6f8007a5 (2.46 difficulty; 20.77 million net weight)
• 1047364 - 5c675fceb4d4c93e1d23d756db66713781c3fb419c48e2ffceae4c22e5aa385e (7.7 difficulty; 14.68 million net weight)
• 
  
• see older hashes at: (B)

III. see also (aka: further info about forks)

See also chapters: 

• Prelude + 
• So, how do you actually know that something is "wrong" in your Gridcoin client? 

here.

Erkan (find me on IRC and twitter)

(A) 

Typing "reorganize e20a0e5c04c987942f7a557ec2b06a220a6c0dfb504f4db7de2719b8c436cf5e" (without the "s) in your debug console should bring you to block 1046800, and hopefully you get back to our chain. Compare hashes above, please.

(B)

See newer hashes in section II above.

• 1047348 - 6486f52cb39ef34cca3e2a8dc5f9a883ecc19e59b67ed1269bbdb8ebd9e6d691 (2.4 difficulty; 6.14 million net weight)
• 1047315 - 1b7331cafaf8ba0c375b5f0d898a1cb909b793d9c9c5b2f572f13d0c68adac9e (0.82 difficulty; 5.05 million net weight)
• 1047305 - 36f2ee208e5a718a2f48ed743541a09d5cc52eab3f81a496e31844e91aa58c7c (0.77 difficulty; 4.98 million net weight)
• 1047296 - 6189825f2282ad5cf192f976225522bce6896056657b330935a5f99677ee1954 (0.77 difficulty; 4.935 million net weight)
• 1047290 - 447bcf2cba283852b99a37dfb97486adbbcf69e422953c9b9d717fc3e7dbfdfa (0.849 difficulty; 4.769 million net weight)

Comments

[tomasbrod]

Please note that the reorganize command is an experimental tool. To avoid any damage, lock your wallet before using this command and unlock it only after restart.

Also if you match the latest hash, the one with the highest block number, there is no need to verify any other hashes. This is a property of hash list data structure.

[erkan]

Sadly, this fork:

• overshadowed the 3-year anniversary of our block number 1 :-(
• and something wrong with the superblock: "Did you have a huge magnitude increase"

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[ironfixxxer]

Using the !verify command I get "Method not found (code -32601). Doesn't let me verify the blocks.

[erkan]

• The terms above starting with ! (e.g. !verify) are commands which the fediverse-bot accepts (provides lots of knowledge on Gridcoin with like 1000 commands, try first: !help) in IRC.
• In your wallet you can use e.g. this: "type in your Gridcoin wallet's debug menu: getblockhash 1047364"

[ironfixxxer]

Ah, got it. My hashes match. Thanks so much.

[aglezabad]

Also, this fork is causing problems in Gridcoinstats. It's recreating the chain on loop. : (
I've read your post about putting more nodes and I think I could create one, because I have a server which it's not doing anything and it has a good link (2.5Gbps fair use). Where can I get some information? Thank you.

[tcblack]

I noticed that the rebuild on Gridcoinstats was not going linear (the blocks behind number keeps going in both directions).
Unfortunately that is where my understanding of all of this fails.
The platform is simply not beginner friendly. My wallet is synced at block 1048073 right now. is that ok?
I bought some coins this morning and put them in my wallet. Are they gone when the fork gets fixed?

[erkan]

My wallet is synced at block 1048073 right now. is that ok?

my hash for that block is: 2d7ec3aa92d054aa63af8779e86dfa6b461831da65a7cd97603a5d5190f70019

When you come to IRC, you can compare uptodate data with the commands !block and !verify

I bought some coins this morning and put them in my wallet. Are they gone when the fork gets fixed?

If you have the above hash (and check for the uptodate blockhashes also), likely: all is fine.
Also, when the exchange could send it to you, it would look fine... except that exchange would be on same fork as you.

[tcblack]

Ah, thank you. I have the same hash on that block so I should be good to go.

[erkan]

Have you ever set up Gridcoin before? If not, check the FAQ

If yes, jump to here and look at the "listen=1" section: "Enabling this option will allow you to participate as a fullnode and spare extra bandwidth for the Gridcoin network. "

[aglezabad]

Thank you very much.