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Is there a list of problematic blocks? I mean blocks in official blockchain that may cause carelessly written bitcoin client to stuck after receiving them? Can you provide a link for further reading about different type of such blocks and ways to cope with them?

Note: The most similar question I found is Is there a listing of strange or unusual scripts found in transactions?

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This question is impossible to answer without knowing what defects these hypothetical clients have. – Nick ODell Feb 7 at 8:06
Hi fafkulec, this question is getting votes to be closed because there's not really any way to answer it, and the bitcoin stack exchange is really designed for questions that can be answered authoritatively and concretely. This isn't any reflection on you--it's just how the site stays on track instead of drifting into a kind of general forum full of impossible-to-verify opinions. – eMansipater Feb 8 at 5:33

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1 Answer

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Lets see, I can't provide you a list with reference, but off the top of my head:

  • There are blocks that have the same coinbase transactions as previous blocks (I have heard of two, seen one so far)
  • There are transactions in a block that send a lot of coins to an address of "0" (they were intended for MtGox, but someone made a mistake in their code)
  • There are transactions that have multiple opcodes for verifying signatures
  • There are a lot of transactions that put some data on the stack and get rid of it
  • There are transactions that use other verification methods than signatures (for example, passwords)

Those are to my knowledge the cases that could cause the most trouble for poorly implemented clients

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